RMS Policy

Risk Management Policies of Bonanza Portfolio Ltd.

The following document describes the risk management policy followed by Bonanza. Please read it carefully as it pertains to your trading activity. The policy is applicable to all the segments of Bonanza Portfolio Limited & Bonanza Commodity Brokers Private Limited.

Background:

Bonanza Portfolio Ltd. is a registered stock broker of The National Stock Exchange of India Ltd. (NSE), Bombay Stock Exchange (BSE). All these exchanges follow online trading systems and have a settlement system of T+1 in Capital Market segment and T+1 in derivatives segment for Daily mark to market & Final settlement (including Currency Derivatives). Bonanza is using both the ODIN software (as provided by Financial Technologies Ltd.) / XTS – Software and also has inhouse developed Mobile App “Bigul” for trading in Capital Market and Derivatives segment.

Bonanza’s group companies are licensed broking entities in the Commodities market as well and are also registered/ licensed Depository Participants. Therefore, there is a need to consider the risk management issues on two fronts viz. meeting the requirements of the Regulators / Stock Exchanges on risk containment issues and setting its own operational guidelines with proper parameters to combat various risk related issues like regulatory risks, market risks, client risks, employee risks etc.

Further, the risk management processes are designed to ensure that the senior management periodically/continuously receives relevant information and is also updated on various issues, both regulatory as well as operational, required to understand and mitigate the risks.

It shall be noted that the policies and procedures envisaged in this document are subject to changes from time to time, depending upon our internal risk management framework, market conditions and external environment.

Major Functions of RMS:

  • Allocating exposure to the clients’ trading account as per their funds & securities and enabling the clients to trade seamlessly within their available funds and securities.
  • Monitoring of orders and trades by clients. Checking of order rejections and increasing exposure, whenever required or sought for.
  • Continuously monitoring the MTM profit / loss incurred out of non-settled trades, comparing the actual margin requirements of clients and the Total Margin available for clients on a one-to-one basis and initiating remedial actions, wherever required
  • Trigging the SMS alert to client's on MTM loss reaching a particular % of the total deposit of each client available with us. Decision taking with regard to squaring off positions on account of MTM loss or Margin shortfalls or any other reasons that may come across,
  • Benchmarking Margin v/s Exposure of client.
  • Risk management in relation to all the trading activities for Clients is handled by RMS & Surveillance Dept.

A. Client ‘Funds’ computation:

Bonanza allocates exposure limits to its clients against the “Funds” brought in by them and lying in the credit of such Client in the Books of Bonanza.

Net Funds of the Client.

The different components of the “Funds” acceptable to Bonanza for this purpose are:

  • Cash deposit (i.e., by way of cheques/NEFT/RTGS/UPI etc tendered by the client in favour of Bonanza and cleared by the bank).
  • Client may get the instant limit during market Hour's to pay the fund to BONANZA through payment gateway: - ATOM/Razor Pay / UPI / NEFT / RTGS with authorised Selected Banks which is available with said gateway.
  • Credit balance of the clients with Bonanza

Net Deposit of the Client.

  • Net Funds of the Clients, Plus
  • Value of Pledge Securities after applicable haircut.

Percentage of Hair Cut to be applied on the Value of the “Securities”:

Bonanza has prescribed a policy for effecting a margin (generally referred to as the “haircut”) on various components of the “Funds” brought in by a client to avail Exposure limits as well as to meet Exchange or Market determined Margins while trading on the Derivative market segments. However, the RMS department will have the powers to impose any changes or modification, to the said percentages as per market scenario, Volumes of the scrip, market capitalization of the scrip, volatility, and keeping view of SEBI or exchange circulars/ prescriptions. Haircut will be modified from time to time by RMS Department after taking records of the scrip on the parameter mentioned below.

  • If exchange haircut for a particular scrip is up to 49%, then we take an additional 10% haircut over exchange haircut
  • If exchange haircut for a particular scrip is 50% to 79%, then we take an additional 15% haircut over exchange haircut
  • If exchange haircut for a particular scrip is more than 79%, then we take 100% haircut for that scrip.

Further, the Deposit / Value against the Pledge securities is governed by Script wise limit assigned by SEBI / Exchanges for the client, trading member and Clearing member.

B. Exposure Limits

Cash Market segment

Clients can place orders in two products: -

  • Margin / MIS
  • Delivery / CNC (Cash and Carry)

Margin Trade for other than Illiquid Script’s: - While the Exchanges has different margin for each scrip based on the volatile of the scrip. However Generally, as a thumb rule, it has been decided that a client shall be granted an intraday exposure upto 4 times of the net value of his Net Deposits after the imposition of the Margins/ Haircut in securities for trading in cash segment across all exchanges for trading in the Cash markets.

Delivery Trades: - A client shall be given exposure 1 times of his Net Funds for buying in cash segment across all exchanges of the Net Fund balance in the account of the client.

Credit For Sale: - Client is allowed to purchase, Upto 100% of the value of the shares sold as delivery, the other share/s except the script's that he has sold in other words Re-purchase of the delivery share sold is not allowed. If the Client has sold pledged Share. Limit against sales sold will not be allowed.

When you sell shares from your demat account, the system gives you a default trading limit of ₹2 lacs on the same day (T Day)

Derivatives market segment (Equity, Currency and Commodities)

Clients can place orders in two products in the Derivatives segment:

  • Intraday / MIS
  • Carry forward / NRML

Intraday Trades: - After implementation of Peak margin guidelines, a client shall be given margin limit of only 1 times of his Net Deposit for trading in the equity derivative segments across all exchanges.

Carry-forward Trades: - Client shall be given margin limit of only 1 times of his Net Deposit for trading in the equity derivative segments across all exchanges .100 % Upfront margin (SPAN+ELM) is required from the client before placing the order.

Derivative expiry week delivery margins: -On the Derivative Expiry week Delivery margins shall be levied/Physically marking, no fresh positions in carry forward product will be allowed in the Stock's Future & options current expiry contract, clients will only be allowed to square off their existing positions.

Delivery on F&O expiry: -If there are in any net outstanding position of the future of the share along with net outstanding ITM/OTM call & puts resulting in net delivery position as delivery buy or delivery sell by the client, we will check the for delivery buy for the clear funds with us of the client and for delivery sell the delivery in hand in the DP account with the client with bonanza .If it is supported it will be permitted otherwise it will be marked as “Do not exercise”.

50-50 cash component of the margin by the client: - As per the recent regulatory guideline client should have minimum 50% cash component of his derivative margin used including peak margin. In case of any shortfall of the cash component of the margin the same shall attract interest @ .04% per day on the cash component shortfall amount.

Margin/Intraday Square-Off: -

Segment Existing Timing Revised Timing (Effective 3 August 2026)
Equity (Stocks under CAS) 3:15 PM 3:10 PM
Equity (Stocks not under CAS) 3:15 PM 3:25 PM
Index & stock F&O contracts 3:15 PM 3:25 PM

As Currency Derivative segment are squared up after 4.45 pm & Commodity Derivative are squared up after 11.20 pm.

Further, the RMS department also has the discretion to reduce / change the exposure in any or all of the segments for a particular client, or any segment or all segments as a whole, with or without any prior information in extra ordinary situations.

C. Demat Securities in Bonanza’s Beneficiary A/c of each Client:

  • With POA in favour of Bonanza and
  • Without POA / DDPI

a) Clients With POA/DDPI in favour of BONANZA- Bonanza shall do the EPI/PAYIN of the shares sold by the clients whose POA/DDPI of the bonanza.

b) Clients without POA/DDPI With EDIS Registration: - Bonanza Provides the facility of linking such client of their Demat A/C (Both in NSDL & CDSL) with us. After such linking by the client, the client can sell these shares through EDIS system under which such shares sold are blocked by the DP in the beneficiary account of the client. Pay-in of such EDIS blocked sale transaction is done by Bonanza. No additional upfront margin for such sale is required from the clients.

c) Clients without POA/DDPI Without EDIS Registration: - In such cases full upfront margin is to be available with bonanza before placing any order. The clients have to ensure himself the EPI/Pay-in in time to avoid any Auction.

D. Mark-to-Market (MTM) Loss

If a client’s position begins to incur an MTM loss, the following steps will be initiated:

  • 50% MTM Loss: An SMS alert will be sent to the Client.
  • Subsequent Loss Alerts: Additional alerts will be triggered for every 10% increase in MTM loss thereafter.
  • 90% MTM Loss: The position may be auto squared-off depending on the Client’s available margin and fund status.
  • Risk Control: If necessary, the admin team reserves the right to square off the position to prevent further loss.

Important Notes:

  • Upon receiving an alert, it is the Client’s responsibility to either add funds or reduce the position to manage risk.
  • Any profit or loss arising from the trade will be solely borne by the Client.

For the purpose of calculating M2M loss, the threshold limit is on the basis of Net Deposit available at the start of the trading day any additions less any payments during the day.

Alert / Warning Messages: System generated alert messages shall be sent to clients on their mark to market loss reaching 50% & for every 10% increase in MTM loss thereafter. Messages are sent on the registered mobile number of the clients. subject to available of connectivity of the vendor Further, any position being squared off by RMS dept., appropriate information shall be sent to the clients.

E. Refusal of Order in less liquid scrips / contracts:

Bonanza restricts clients from trading in less liquid scrips like ASM/GSM/IRP (list of which is released by the exchanges also). Bonanza can restrict trading of those scrips also where it deems fit that trading in these shares will lead to price manipulation or creating artificial volumes.

For the risk mitigation purpose, RMS dept. shall review such list on regular basis to decide to allow or restrict trading in any scrip / contract. The list is decided after considering the market scenario, Volume, Open positions, market capitalization, etc.

F. Trading on the Newly Listed securities:

Trading in newly listed shares are subject to the high market risks and rate fluctuations; the chances of higher volatility are more. The dealing in newly listed shares will be allowed considering the applicable margin to be 100%.

G. Policy on Handling of Client's Unpaid Securities

1. Purpose

This Policy outlines the manner in which Bonanza Portfolio Limited ("Trading Member") shall handle securities purchased by clients where the purchase consideration remains unpaid.

The Policy has been framed in accordance with the Securities and Exchange Board of India (SEBI) Circular no. HO/38/11/(9)2026-MIRSD-POD/I/15382/2026 dated July 03, 2026 on Handling of Client's Unpaid Securities by Trading Members and the operational guidelines issued by Stock Exchanges and Depositories.

The objective of this policy is to:

  • Protect client interests.
  • Ensure transparency in handling unpaid securities.
  • Comply with applicable SEBI regulations.
  • Define timelines for pledge creation, release, invocation, and liquidation.

2. Scope

This policy shall apply to:

  • All delivery-based securities transactions executed through Bigul or Bonanza Portfolio Limited.
  • Securities where the client has not fulfilled the payment obligation within the prescribed timeline.

3. Definitions

Unpaid Securities

Securities purchased by the client for which the purchase consideration has not been fully received by the Company.

CUSPA

Client Unpaid Securities Pledgee Account maintained by Bonanza Portfolio Limited for creating auto-pledge over unpaid securities.

Payout Date

The date on which securities are credited to the client's demat account pursuant to settlement by the Clearing Corporation.

4. Process for Handling Unpaid Securities

Step 1 – Credit of Securities

Upon settlement, securities shall be credited directly to the client's demat account.

Immediately after such credit, an automatic pledge shall be created in favour of the Bonanza Portfolio LTD's Client Unpaid Securities Pledgee Account (CUSPA).

No separate authorization or instruction from the client shall be required for creation of this pledge.

Step 2 – Client Communication

Immediately after creation of the pledge, we shall communicate to client through SMS and/or Email:

  • Outstanding payment obligation.
  • Securities under pledge.
  • Due date for payment.
  • Broker's right to invoke and liquidate pledged securities in case of non-payment.

5. Timeline for Payment

Clients shall clear the outstanding payment obligation within a maximum period of five (5) trading days from the payout date, in accordance with applicable SEBI regulations.

The broker reserves the right to invoke the pledge and liquidate unpaid securities if the payment obligation is not met within the prescribed timeline.

6. Daily Review of Pledged Securities

During the unpaid period, the Risk Management Team shall review pledged securities on a daily basis considering:

  • Outstanding ledger balance.
  • Client's overall margin obligations.
  • Market value of pledged securities.
  • Other risk parameters prescribed by the Exchange.

Where the value of pledged securities exceeds the required amount, the broker shall release the excess pledge on or before the next trading day.

7. Trading Exposure

Unpaid securities pledged under CUSPA shall not be considered for granting additional trading exposure or limits to the client.

8. Release of Pledge

The broker shall release the pledge in any of the following situations:

A. Full Payment

Immediately upon receipt and realization of the client's outstanding payment obligation.

B. Excess Pledge

Where the pledged value exceeds the required security after daily review, the excess pledge shall be released on or before the next trading day.

C. Auto Release

Where neither invocation nor release is initiated within the prescribed regulatory timeline, the Depository shall automatically release the pledge at the end of the sixth trading day after payout.

9. Invocation and Liquidation

If the client fails to fulfil the payment obligation within the prescribed timeline:

The Broker may:

  • Invoke the pledge.
  • Liquidate such quantity of pledged securities as may be required to recover:
    • Outstanding purchase consideration
    • Statutory levies

Prior to invocation and liquidation, reasonable notice shall be provided to the client through SMS and/or Email on T+4 Day.

After adjustment of dues, any surplus amount shall be credited to the client's ledger.

10. Timeline for Handling Unpaid Securities

Timeline Activity
Payout Day (T) Securities credited to client's demat account and auto-pledged in favour of CUSPA. SMS/Email communication sent.
T to T+4 Trading Days Client may clear outstanding dues. Daily review of pledged securities shall be carried out. Excess pledge, if any, shall be released on or before the next trading day.
T+5 Trading Days If payment remains unpaid, the broker may issue reasonable notice, invoke the pledge and liquidate unpaid securities in accordance with this Policy.
T+6 Trading Day If neither invocation nor release has taken place, the Depository shall automatically release the pledge in accordance with applicable regulations.

11. Exceptional Circumstances

The Company may seek extension of the pledge in exceptional circumstances, including but not limited to:

  • Lower circuit with only sellers.
  • Trading suspension.
  • Surveillance restrictions.
  • Unforeseen circumstances.

Such request shall:

  • be made before 6 PM on 5th Trading Day
  • be communicated to the client.

12. Restrictions

Securities pledged in favour of CUSPA:

  • shall not be pledged to Banks or NBFCs;
  • shall not be transferred for raising funds;

13. Client Responsibilities

Clients are expected to:

  • Maintain sufficient funds before settlement.
  • Monitor their ledger obligations regularly.
  • Read communications sent by the broker.
  • Clear outstanding dues within prescribed timelines.

Failure to do so may result in invocation of pledge and liquidation of securities.

14. Communication Matrix

Event Event Mode of Communication
Auto pledge creation SMS & Email SMS & Email
Outstanding payment obligation SMS & Email
Notice before invocation (T+4) SMS & Email
Sale of securities (T+5) Email
Extension of pledge SMS & Email
Release of pledge Email

15. Client Grievance Redressal

Clients may contact the Customer Support Team for any clarification relating to unpaid securities, pledge creation, release, invocation, or liquidation.

If the grievance remains unresolved, the client may escalate the matter through the Grievance Redressal Mechanism available on the website.

16. Review of Policy

This Policy shall be reviewed periodically or whenever required due to changes in SEBI regulations, Stock Exchange guidelines, or Depository requirements.

H. Value of collateral v/s. Debit Balance

As per Bonanza’s existing policy, debit balance of all clients is maintained at 70% of the value of the collateral provided to Bonanza. However, on reaching 70% or above, the client is required to clear the debit balance or infuse more collateral / Funds. If at any moment the debit reaches 80% of the collateral value, the RMS Department may liquidate the collateral.

Please note that interest is not charged on margin against collateral. However, if the Bigul has funded cash component of margin required in FNO segment, Bigul will charge client an interest of 0.04% per day on the peek cash margin funded. e.g- Total approved collateral value Rs.1,00,000/- Margine utilised- Rs. 1,00,000/-

Required cash -50% of Rs.1,00,000/- = Rs.50,000/-.

Ledger balance – Rs. 25,000/-

Cash Short-Rs.25,000/-

Interest for the day – Rs.10/-

B- If the pledge security is cash equivalent (attached list of cash equivalents securities) the same can be utilise for both cash and collateral as per exchange circular and no interest would be charged on cash component of utilised margin.

As per the Exposure policy of Bonanza, it is decided that clients shall not be allow to carry debit balances more than 5 days. If the debit balance continues on T+5th day, the clients’ collateral to the extent of debit balance may be liquidated by the RMS Department. However, after this period of 5 days, company may not allowed Client to take up any fresh positions unless T+5 debit amount is liquidated on FIFO basis. This policy is followed to ensure that the clients do not carry the debit balances (covered by the Collateral with Bonanza) on regular basis. The shares purchased by client & remaining unpaid may be kept by Bonanza in CUSA a/c (Client Unpaid Securities Account) which will be transferred to client account of receipt of payment or will be sold and payin done if debit balance not liquidated by the client within T+5 day

I. Client Intimation / Alert Process:

Clients will be pre-intimated on T+5 day about their ageing debit balance and that their collateral can be liquidating against ageing debit balances through SMS on their registered mobile number.

J. Haircut Policy:

Effective immediately, the following haircut structure will apply to Exchange-approved shares based on their corresponding Exchange VAR:

Exchange VAR up to 49%

  • Additional haircut of 7% (reduced from 10%)

Exchange VAR between 50% and 79%

  • Additional haircut of 12% (reduced from 15%)

Exchange VAR above 79%

  • 100% haircut will be applied

Note: This policy is applicable only to Exchange-approved shares.
Unapproved shares will continue to be treated in the same manner as before (i.e., 100% haircut)

Display of Communication via Mobile App/Website

Please note that, in the normal course of business, notifications regarding corporate actions, important communications related to clients’ trading accounts, outstanding positions and their expiry, margin calls, any other important communication in accordance with SEBI/Exchange(s) circulars, and any notifications received from the Exchange or Depository pertaining to trading activity etc., will be displayed through the Mobile App/Website. Such notifications shall be deemed to have been formally communicated to the Client’s registered mobile number and/or email ID. Accordingly, we request all Clients to regularly review and carefully read every communication displayed on the Mobile App/Website to stay informed and avoid any interruptions to their trading activity, including potential trading halts.

Short Selling Policy on Non-FO Scripts

At Bigul, short selling in Non-FO scripts is strictly prohibited. This policy ensures compliance with exchange regulations and helps prevent triggering compliance alerts.

AMO Order:

An After-Market Order (AMO) is an instruction to buy or sell securities outside regular trading hours, such as late in the evening or early in the morning. Since the exchange is closed, The Trading Member queues the order and pushes it to the exchange as soon as the market opens the next trading session.

AMO Order Timings as follows :

Exchange Segment AMO Start AMO Stop Remarks
NSE Cash 4:30:00pm 8:59:59am
NSE Derivatives- Futures 4:30:00pm 8:59:59am
NSE Derivatives- Options 4:30:00pm 9:14:56am AMO not available during preopen 9:00 to 9:07am
BSE Cash 4:30:00pm 8:59:59am
BSE Derivatives- Futures 4:30:00pm 8:59:59am
BSE Derivatives- Options 4:30:00pm 9:14:56am AMO not available during preopen 9:00 to 9:07am
MCX Commodities 12:30:00am 8:59:59am
NCDEX Commodities 12:30:00am 9:59:59am

Closing Auction Session (CAS)

Effective from August 3, 2026 | Client-facing operational and risk-management policy

Document control Details
Policy owner Risk Management / Compliance / Operations
Applicable entity Bigul, the fintech division of Bonanza Portfolio Limited Bigul, the fintech division of Bonanza Portfolio Limited
Policy status Policy status Effective from August 3, 2026
Document date July 29, 2026
Applicability Equity cash, index derivatives and stock derivatives

Important client action: Clients using MIS/INTRADAY must close open positions before the revised auto square-off time. RMS square-off is a risk-control facility and does not replace the client's responsibility to monitor and close positions.

1. Purpose

This policy explains the changes arising from the introduction of the Closing Auction Session (CAS), the revised market closing schedule, Bigul's revised MIS/INTRADAY auto square-off timings, and the risk-management treatment of orders and positions near market close.

It also explains how the closing price is determined, why CAS is being introduced, how the auction operates, which orders are permitted, how existing orders are treated, and the responsibilities of clients.

2. Scope

This policy applies to Bigul clients trading in:

  • Equity stocks covered under CAS;
  • Equity stocks not covered under CAS;
  • Index futures and options; and
  • Stock futures and options.

This policy applies to Bigul clients trading in:

3. Key definitions

Term Meaning
CAS Closing Auction Session: the end-of-day auction used to determine the official closing price of eligible stocks.
CTS Continuous Trading Session: the regular order-matching session in which trades occur continuously.
CAS stock A stock identified by the exchanges as eligible for CAS; in Phase I, this broadly covers stocks on which F&O trading is permitted.
Non-CAS stock Non-CAS stock An equity stock that continues under the normal continuous trading and existing closing-price process.
MIS/INTRADAY A product type intended for intraday trading. Open positions are required to be closed within the same trading day.
RMS RMS Bigul's Risk Management System, which monitors risk, margins, orders and open positions and may take protective action.
Reference Price The price used to establish the permissible CAS auction range, generally based on VWAP from 3:00 PM to 3:15 PM.
Equilibrium Price Equilibrium Price The price at which the maximum executable quantity can be matched during CAS; this becomes the official closing price.
VWAP Volume Weighted Average Price: the average traded price weighted by the quantity traded at each price.
LTP Last Traded Price: the price at which the most recent trade was executed.

4. Policy statement and effective date

SEBI has introduced the Closing Auction Session to enhance the price-discovery process used for the closing price of eligible stocks. CAS and the associated revised timings will take effect from August 3, 2026.

Market opening timings remain unchanged.

5. Revised market timings

Segment Market closing schedule
CAS-eligible equity stocks Continuous trading until 3:15 PM, followed by CAS
Equity stocks not covered under CAS Continuous trading until 3:30 PM
Index and stock F&O contracts Trading until 3:40 PM

Clarification: For a CAS-eligible stock, 3:15 PM is the end of continuous trading—not the end of all exchange activity. The stock then moves into the Closing Auction Session.

6. Revised MIS/INTRADAY auto square-off timings

Product/segment Existing timing Effective August 3, 2026
Equity (Stocks under CAS) 3:15 PM 3:10 PM
Equity (Stocks not under CAS) 3:15 PM 3:25 PM
Index & stock F&O contracts 3:15 PM 3:25 PM

7. RMS operating rules for MIS/INTRADAY positions

7.1 Client responsibility

Clients using MIS/INTRADAY are responsible for monitoring and closing their open positions before the applicable auto square-off time. Clients should not rely on CAS or on the RMS process as their primary method of closing an intraday position.

7.2 Commencement of RMS square-off

Bigul's RMS may begin the auto square-off process at or before the stated time, depending on market conditions, liquidity, volatility, available margin, system load, exchange restrictions and the client's risk exposure.

The stated time indicates the scheduled commencement of the RMS process and is not a guarantee that every position will be closed at that exact moment.

7.3 Treatment of pending orders

To facilitate closure of an open MIS/INTRADAY position, RMS may cancel pending orders linked to the position, including target, stop-loss or other conflicting open orders. Clients should review and cancel conflicting orders before manually closing their positions.

7.4 Execution risk

RMS square-off orders may be affected by:

  • Insufficient market liquidity or lack of a matching counter-order;
  • Circuit limits, price bands or trading suspension;
  • Order rejection by the exchange or order management system;
  • High volatility, slippage or rapid price movement;
  • Insufficient margin or other applicable risk checks;
  • Technical, connectivity or exchange-side interruption; or
  • Any regulatory or exchange restriction applicable to the security or contract.

Accordingly, the execution price, execution time and complete execution of an RMS order are not guaranteed.

7.5 Positions that remain open

If a position cannot be squared off, it may remain open and will continue to be subject to applicable margin, settlement, exchange and RMS requirements. Any resulting loss, obligation, penalty, auction impact or settlement liability remains the client's responsibility, subject to applicable law and regulation.

7.6 Charges

RMS square-off may attract applicable charges in accordance with Bigul's prevailing tariff, RMS policy and client agreement.

8. Why the closing price is important

The official closing price is used across the financial market for:

  • Calculating market indices such as Nifty and Sensex;
  • Determining the Net Asset Value (NAV) of mutual fund schemes;
  • Applicable final-settlement calculations for F&O contracts on expiry;
  • Valuing client portfolios and preparing Profit & Loss reports;
  • Valuing securities pledged as collateral;
  • Measuring the performance of index funds and Exchange Traded Funds (ETFs); and
  • Other exchange, clearing, settlement and reporting purposes.

9. Existing method of calculating the closing price

Under the existing mechanism, the closing price is generally determined using the Volume Weighted Average Price of trades executed during the applicable closing period.

VWAP = Sum of (Trade Price x Trade Quantity) / Total Traded Quantity/p>

9.1 Why the closing price is not simply the LTP

The Last Traded Price may be influenced by a small trade at an unusual price near market close. For example, assume a stock trades actively between Rs. 1,000 and Rs. 1,010 throughout the day. At 3:29 PM, a participant sells 10 shares at Rs. 980 during a thin-liquidity moment. Rs. 980 becomes the LTP, but it may not fairly represent the price at which the broader market valued the stock.

A defined closing-price methodology reduces the influence of an isolated final trade.

10. Why CAS is being introduced

CAS brings buy and sell interest into one common auction pool near market close. Instead of relying only on trades executed at different times during continuous trading, the auction considers the combined demand and supply available during the closing window.

The intended benefits include:

  • Improved closing-price discovery;
  • A fairer representation of overall demand and supply;
  • Better visibility of collective market interest;
  • More efficient execution opportunities for large orders;
  • Lower market-impact costs for large participants;
  • Lower tracking error for ETFs and index funds; and
  • Alignment with closing-auction practices followed by major global exchanges, including NYSE and LSE.

Large investors may otherwise need to split substantial orders into smaller trades to reduce their impact on market prices. By pooling orders, CAS may provide a greater opportunity for a large buyer and a large seller to meet at the same price.

11. Applicability during Phase I

Category Stocks covered Closing process
Category I Stocks where F&O trading is permitted CAS applicable
Category II All other equity stocks All other equity stocks
  • Continuous trading in CAS stocks stops at 3:15 PM and is followed by CAS.
  • Non-CAS stocks continue normal continuous trading until 3:30 PM.
  • Index and stock derivative contracts continue trading until 3:40 PM.
  • The exchanges identify CAS-eligible securities, and the list may change when derivative eligibility changes.

11.1 Independent auctions across exchanges

NSE and BSE conduct their Closing Auction Sessions independently. Reference prices, auction order books and equilibrium prices may therefore differ across exchanges. The official closing price discovered on one exchange may differ from the closing price discovered on another exchange.

12. Closing Auction Session timeline

Time Activity
3:00 PM-3:15 PM Continuous trading and reference-price VWAP calculation
3:15 PM-3:20 PM Reference-price calculation and transition from CTS to CAS; no fresh orders accepted
Reference-price calculation and transition from CTS to CAS; no fresh orders accepted 3:20 PM-3:25 PM Order Entry Session I: market and limit orders
3:25 PM-random close Order Entry Session II: limit orders only
3:28 PM-3:30 PM 3:28 PM-3:30 PM Random closure of the CAS order-entry window
Approximately 3:30 PM-3:35 PM Order matching and closing-price determination Order matching and closing-price determination
Until 3:40 PM Index and stock F&O trading continues

13. Detailed CAS process

13.1 From 3:00 PM to 3:15 PM

Regular continuous trading continues as usual. During this period, the exchange calculates the VWAP of trades executed in each CAS-eligible stock. This VWAP generally becomes the Reference Price for CAS.

If no trade occurs between 3:00 PM and 3:15 PM:

1. The stock's Last Traded Price for the day may be used as the Reference Price.

2. If the stock has not traded during the day, the previous trading day's applicable closing price may be used.

3. Where a corporate action applies, the adjusted previous close or applicable base price may be used.

13.2 From 3:15 PM to 3:20 PM

Continuous trading ends for CAS-eligible stocks and the market transitions from CTS to CAS.

  • No fresh CAS orders are accepted during the transition period.
  • The exchange calculates and disseminates the Reference Price.
  • The CAS price band is generally fixed at plus or minus 3% of the Reference Price.
  • Eligible unexecuted limit orders from CTS may be carried forward to CAS.

The following CTS orders are not eligible to be carried into CAS and may be cancelled:

  • Stop-loss orders;
  • Iceberg or disclosed-quantity orders;
  • Orders outside the applicable CAS price band; and
  • Any other order type not permitted under the CAS framework.

For stock futures, outstanding orders outside the revised applicable futures price band will be cancelled. This particular futures price-band cancellation treatment does not apply to option orders; the existing options price-band and Limit Price Protection methodology continues.

13.3 From 3:20 PM to 3:25 PM - Order Entry Session I

During this period, participants may place:

  • Market orders; and
  • Limit orders.

Eligible orders may be modified or cancelled in accordance with exchange rules. New and modified orders are subject to applicable margin, price-band and risk checks.

The exchange continuously disseminates information including:

  • Indicative equilibrium price;
  • Indicative executable or tradable quantity;
  • Total cumulative buy quantity;
  • Total cumulative sell quantity;
  • Buy/sell imbalance quantity; and
  • Indicative index closing value.

These values are indicative and can change as eligible orders are placed, modified or cancelled.

13.4 From 3:25 PM until random closure - Order Entry Session II

  • Only limit orders may be placed.
  • Eligible limit orders may be modified or cancelled until the random closure.
  • Market orders already entered before 3:25 PM cannot be modified or cancelled.
  • The session closes randomly at any time between 3:28 PM and 3:30 PM.

Random closure is intended to discourage the concentration or flooding of orders at the final second.

13.5 Approximately 3:30 PM to 3:35 PM - Matching

After the random closure, the exchange stops accepting orders, applies the equilibrium-price algorithm and matches eligible buy and sell orders. The resulting equilibrium price becomes the official closing price.

Execution warning: Placing an order during CAS does not guarantee execution. An order may be fully executed, partially executed or remain unexecuted depending on eligible matching quantity at the equilibrium price.

14. Orders permitted and restricted during CAS

Period Orders permitted Important condition
3:15 PM-3:20 PM No fresh order entry Transition period; orders entered during this period may be rejected
3:20 PM-3:25 PM Market and limit orders Subject to applicable modification, cancellation, margin and price-band rules
3:25 PM-random close Limit orders only Market orders are locked and cannot be modified or cancelled
After random close No new orders Exchange proceeds to equilibrium-price calculation and matching

14.1 Order types not permitted

  • Stop-loss orders;
  • Immediate or Cancel (IOC) orders;
  • Iceberg or disclosed-quantity orders; and
  • Orders outside the applicable CAS price band.

14.2 Priority of carried-forward limit orders

Eligible unexecuted limit orders carried forward from CTS generally receive higher time priority than limit orders placed during CAS. A price modification to a carried-forward limit order may change its time priority.

15. Margin and risk checks during CAS

The prevailing cash-market risk-management framework applies during CAS. New CAS orders are subject to applicable margin sufficiency checks before acceptance.

  • Eligible limit orders carried forward unchanged from CTS are generally not subjected to a fresh order-level margin check solely because they were carried forward.
  • If a carried-forward order is modified during CAS, the modified order is treated as a CAS order and is subject to the applicable margin check.
  • All new CAS orders are subject to applicable margin, price-band and RMS checks.
  • An order may be rejected where sufficient available margin or capital is not available.

16. Understanding the equilibrium price

A buyer willing to pay up to a particular price is also willing to buy at any lower eligible price. Similarly, a seller willing to accept a particular price is also willing to sell at any higher eligible price. The exchange therefore creates a cumulative view of eligible demand and supply at each potential price.

16.1 Illustrative order book

Bid price Bid orders Bid qty Offer price Offer orders Offer qty
₹105 1 400 ₹105 1 400
₹110 1 500 ₹110 1 150
₹108 1 300 ₹108 1 250
₹102 1 200 ₹102 1 300
₹100 1 100 ₹100 1 200
Total 1,500 Total 1,300

Illustrative result: Equilibrium Price: ₹105 | Shares matched: 900 | Buy imbalance: 600

16.2 Cumulative order analysis

Price Cumulative buy qty Cumulative sell qty Executable volume
₹100 1,500 200 200
₹102 1,400 500 500
₹105 1,200 900 900
₹108 800 1,150 800
₹110 500 1,300 500

At ₹105, 900 shares can be matched—the highest executable volume in the illustration. Therefore, ₹105 becomes the equilibrium price and the official closing price.

16.3 Tie-breaker rules

If more than one price produces the same maximum executable quantity:

1. The price with the smaller imbalance between cumulative buy and sell quantities is selected.

2. If the imbalance is also the same, the price closest to the Reference Price is selected.

3. Any remaining tie is resolved in accordance with the applicable exchange rules.

16.4 When no equilibrium price is discovered

If an equilibrium price cannot be determined, the applicable Reference Price may become the official closing price. If the security has not traded during the day, the latest available applicable closing price may be used under exchange rules.

17. Order-matching priority

Once the equilibrium price is determined, eligible orders are broadly matched in the following sequence:

1. Eligible market orders receive priority over limit orders.

2. Eligible market orders are first matched with other market orders based on time priority.

3. Remaining market orders are matched against eligible limit orders using the applicable price-time priority.

4. Remaining eligible limit orders are matched with one another using price-time priority.

All eligible trades resulting from the auction are executed at the final equilibrium price. Complete execution is not guaranteed where sufficient matching quantity is unavailable.

18. Practical impact on traders and investors

18.1 MIS/INTRADAY traders

  • Close CAS-stock MIS/INTRADAY positions before 3:10 PM.
  • Close non-CAS equity MIS/INTRADAY positions before 3:25 PM.
  • Close index and stock F&O MIS/INTRADAY positions before 3:25 PM.
  • Do not rely on the additional exchange trading time to postpone closure of an MIS/INTRADAY position.

18.2 Delivery investors

  • Check whether the stock is CAS-eligible before placing a late-day order.
  • Understand that a CAS market order may execute at the final equilibrium price, not necessarily an indicative price seen when the order was entered.
  • Review pending stop-loss, iceberg and other special orders before 3:15 PM.
  • Maintain sufficient funds or securities and applicable margin for new or modified CAS orders.

18.3 F&O traders

  • Index and stock F&O contracts remain open until 3:40 PM.
  • Bigul's MIS/INTRADAY auto square-off for index and stock F&O begins at 3:25 PM.
  • Stock-futures price bands may be revised from 3:15 PM for alignment with the CAS framework.
  • Outstanding stock-futures orders outside the revised band may be cancelled.
  • The existing options price-band and Limit Price Protection methodology continues.

19. Client obligations and acknowledgements

By trading through Bigul, the client is expected to:

  • Monitor open positions, pending orders, available margin and applicable product type;
  • Know whether a security is CAS-eligible;
  • Close MIS/INTRADAY positions before the applicable auto square-off time;
  • Review exchange messages, order status and cancellation or rejection notifications;
  • Understand that indicative auction information may change before random closure;
  • Accept that order placement does not guarantee execution or a specific execution price; and
  • Bear applicable losses, charges, penalties and settlement obligations arising from trading activity, subject to applicable law.

20. RMS discretion and policy revision

Bigul may revise auto square-off timings, order handling, risk limits and other protective measures based on SEBI directions, exchange or clearing-corporation circulars, market conditions, liquidity, volatility, system capacity or internal risk-management requirements.

Where practicable, material changes will be communicated through the Bigul website, trading platform, email, SMS, push notification or another available communication channel.

21. Key takeaways

Subject Policy position
CAS applicability CAS applicability Initially applies to CAS-eligible/F&O stocks identified by the exchanges.
CAS-stock CTS close CAS-stock CTS close Continuous trading ends at 3:15 PM, followed by CAS.
Non-CAS equity close Continuous trading continues until 3:30 PM.
F&O market close Index and stock F&O trading continues until 3:40 PM.
CAS-stock RMS time MIS/INTRADAY auto square-off begins at 3:10 PM.
Other RMS time Non-CAS equity and index/stock F&O MIS auto square-off begins at 3:25 PM.
Closing price Closing price Determined through the equilibrium-price auction for CAS-eligible stocks.
Client action Close intraday positions before the applicable RMS time and do not rely on auto square-off.

22. Support

For questions regarding CAS, revised market timings, order handling or open positions, please contact your Relationship Manager or write to support@bigul.co.

Team Bigul

23. Regulatory and exchange references

  • SEBI circular dated January 16, 2026 on introduction of the Closing Auction Session in the equity cash segment.
  • NSE Circular NSE/CMTR/73362 dated March 18, 2026: Operational Guidelines and SOP on Introduction of CAS.
  • NSE FAQ, Version 2.0, July 2026: Closing Auction Session in Equity and changes in Equity Derivatives.
  • NSE Clearing Circular NCL/CMPT/74898 dated June 25, 2026: Risk Management for CAS.
  • Applicable BSE circulars and operating guidelines for CAS effective August 3, 2026.

24. Disclaimer

This policy is intended to explain Bigul's operational and RMS treatment following the introduction of CAS. It must be read with Bigul's general RMS Policy, account-opening documents, client agreement, rights and obligations, applicable tariff sheet, SEBI regulations, and stock-exchange and clearing-corporation circulars, as amended from time to time.

If there is any inconsistency between this document and a binding regulatory, exchange or clearing-corporation direction, the applicable regulatory or exchange direction will prevail.

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