Important: NSE & BSE - Closing Auction Session (CAS) Changes effective 3rd Aug.'26

Dear Customer,

We would like to inform you that NSE and BSE have introduced significant changes affecting trading in F&O stocks, including the mechanism for determination of closing prices via Closing Auction Session (CAS).

What is CAS?

CAS is a 20-minute session that runs from 3:15 PM for F&O stocks. Instead of the closing price being set by the last 30 minutes of regular trading, all buy and sell orders are now collected in one place and matched at a single price. That price becomes the official closing price for the day.

What is changing?

For CAS-eligible scrips, regular LTP data stops updating at 3:15 PM when the normal trading session ends.

To help you continue tracking the price during the CAS session, we will display the Indicative Close Price (ICP) under the LTP section from 3:15 PM to 3:30 PM.

What is the Indicative Close Price?

The Indicative Close Price is the price at which the maximum executable volume can be traded during the CAS session. It is an indicative price calculated based on the orders available in the auction and may change as orders are placed or modified.

How can I track the price during CAS?

For CAS-eligible scrips:

  • Before 3:15 PM: The LTP will continue to reflect the latest traded price.
  • 3:15 PM to 3:30 PM: The LTP section will display the Indicative Close Price.
  • You can continue referring to the LTP section until 3:30 PM for price reference while trading during the CAS session.

Note: The Indicative Close Price is an indicative auction price and should not be considered the final closing price until the CAS is completed.

Which stocks does this apply to?

Any stock that has F&O contracts available on NSE or BSE is covered under CAS. All other stocks continue exactly as before.

These changes are pursuant to:

The revised timings will be effective from Monday, 3rd August 2026.

Activity Revised Timing Current Timing
Normal Market Close (CAS Eligible Stocks) 3:15 PM 3:30 PM
Normal Market Close (Non-CAS Eligible Stocks) 3:30 PM 3:30 PM
F&O Market Close 3:40 PM 3:30 PM
MIS/BO/CO Auto Square-off (Equity & F&O) 3:05 PM 3:15 PM
Reference Price Calculation / Transition from Continuous Trading Session (CTS) to Closing Auction Session (CAS) 3:15 PM – 3:20 PM
CAS Order Entry/ Modification/ Cancellation (Limit & Market Orders) 3:20 PM – 3:25 PM
CAS Order Entry/ Modification/ Cancellation (Limit Orders Only*) 3:25 PM – 3:30 PM
Order Matching & Trade Confirmation 3:30 PM – 3:35 PM
Transition from CAS to post closing session 3:35 PM – 3:50 PM
Post Close Session 3:50 PM – 4:00 PM 3:40 PM – 4:00 PM

*During 3:25 PM to 3:30 PM, only Limit Orders will be accepted. Market Orders cannot be modified or cancelled during this period. This session closes randomly between 3:28 pm and 3:30 PM to avoid last-minute flooding of orders.

Key changes for you:

  • The Closing Auction Session (CAS) will initially be applicable to stocks with derivative (F&O) contracts.

  • Only Limit Orders and Market Orders will be permitted during CAS. Iceberg Orders and Stop-Loss Orders will not be accepted.

  • The revised MIS/BO/CO (Equity & F&O) auto square-off timing will be 3:05 PM, while the F&O market will remain open until 3:40 PM.

  • For CAS eligible securities, the closing price shall be determined based on the equilibrium price discovered during the CAS. If the equilibrium price is not discovered, the closing reference price shall be considered as the closing price for that security

  • For securities on which CAS is not appliable, closing price shall continue to be determined as per existing mechanism, i.e. VWAP of last 30 minutes of the Continuous Trading Session (CTS).

  • Closing price for all CAS eligible and CAS non eligible securities shall be disseminated together.

  • During the Closing Auction Session, the applicable price band will be ±3% from the reference price.

We request you to take note of these changes and plan your trading activities accordingly.

List of CAS eligible scrips:

FinInstrmId TckrSymb SctySrs FinInstrmNm ISIN
13061 360ONE EQ 360 ONE WAM LIMITED INE466L01038
13 ABB EQ ABB INDIA LIMITED INE117A01022
21614 ABCAPITAL EQ ADITYA BIRLA CAPITAL LTD. INE674K01013
10217 ADANIENSOL EQ ADANI ENERGY SOLUTION LTD INE931S01010
25 ADANIENT EQ ADANI ENTERPRISES LIMITED INE423A01024
3563 ADANIGREEN EQ ADANI GREEN ENERGY LTD INE364U01010
15083 ADANIPORTS EQ ADANI PORT & SEZ LTD INE742F01042
17388 ADANIPOWER EQ ADANI POWER LTD INE814H01029
11703 ALKEM EQ ALKEM LABORATORIES LTD. INE540L01014
1185 AMBER EQ AMBER ENTERPRISES (I) LTD INE371P01015
1270 AMBUJACEM EQ AMBUJA CEMENTS LTD INE079A01024
324 ANGELONE EQ ANGEL ONE LIMITED INE732I01021
25780 APLAPOLLO EQ APL APOLLO TUBES LTD INE702C01027
157 APOLLOHOSP EQ APOLLO HOSPITALS ENTER. L INE437A01024
212 ASHOKLEY EQ ASHOK LEYLAND LTD INE208A01029
236 ASIANPAINT EQ ASIAN PAINTS LIMITED INE021A01026
14418 ASTRAL EQ ASTRAL LIMITED INE006I01046
21238 AUBANK EQ AU SMALL FINANCE BANK LTD INE949L01017
275 AUROPHARMA EQ AUROBINDO PHARMA LTD INE406A01037
5900 AXISBANK EQ AXIS BANK LIMITED INE238A01034
16669 BAJAJ-AUTO EQ BAJAJ AUTO LIMITED INE917I01010
16675 BAJAJFINSV EQ BAJAJ FINSERV LTD. INE918I01026
305 BAJAJHLDNG EQ BAJAJ HOLDINGS & INVS LTD INE118A01012
317 BAJFINANCE EQ BAJAJ FINANCE LIMITED INE296A01032
2263 BANDHANBNK EQ BANDHAN BANK LIMITED INE545U01014
4668 BANKBARODA EQ BANK OF BARODA INE028A01039
4745 BANKINDIA EQ BANK OF INDIA INE084A01016
2144 BDL EQ BHARAT DYNAMICS LIMITED INE171Z01026
383 BEL EQ BHARAT ELECTRONICS LTD INE263A01024
422 BHARATFORG EQ BHARAT FORGE LTD INE465A01025
10604 BHARTIARTL EQ BHARTI AIRTEL LIMITED INE397D01024
438 BHEL EQ BHEL INE257A01026
11373 BIOCON EQ BIOCON LIMITED. INE376G01013
8311 BLUESTARCO EQ BLUE STAR LIMITED INE472A01039
2181 BOSCHLTD EQ BOSCH LIMITED INE323A01026
526 BPCL EQ BHARAT PETROLEUM CORP LT INE029A01011
547 BRITANNIA EQ BRITANNIA INDUSTRIES LTD INE216A01030
19585 BSE EQ BSE LIMITED INE118H01025
342 CAMS EQ COMPUTER AGE MNGT SER LTD INE596I01020
10794 CANBK EQ CANARA BANK INE476A01022
21174 CDSL EQ CENTRAL DEPO SER (I) LTD INE736A01011
760 CGPOWER EQ CG POWER AND IND SOL LTD INE067A01029
685 CHOLAFIN EQ CHOLAMANDALAM IN & FIN CO INE121A01024
694 CIPLA EQ CIPLA LTD INE059A01026
20374 COALINDIA EQ COAL INDIA LTD INE522F01014
21508 COCHINSHIP EQ COCHIN SHIPYARD LIMITED INE704P01025
11543 COFORGE EQ COFORGE LIMITED INE591G01025
15141 COLPAL EQ COLGATE PALMOLIVE LTD. INE259A01022
4749 CONCOR EQ CONTAINER CORP OF IND LTD INE111A01025
17094 CROMPTON EQ CROMPT GREA CON ELEC LTD INE299U01018
1901 CUMMINSIND EQ CUMMINS INDIA LTD INE298A01020
772 DABUR EQ DABUR INDIA LTD INE016A01026
8075 DALBHARAT EQ DALMIA BHARAT LIMITED INE00R701025
9599 DELHIVERY EQ DELHIVERY LIMITED INE148O01028
10940 DIVISLAB EQ DIVI S LABORATORIES LTD INE361B01024
21690 DIXON EQ DIXON TECHNO (INDIA) LTD INE935N01020
14732 DLF EQ DLF LIMITED INE271C01023
19913 DMART EQ AVENUE SUPERMARTS LIMITED INE192R01011
881 DRREDDY EQ DR. REDDY S LABORATORIES INE089A01031
910 EICHERMOT EQ EICHER MOTORS LTD INE066A01021
5097 ETERNAL EQ ETERNAL LIMITED INE758T01015
1023 FEDERALBNK EQ FEDERAL BANK LTD INE171A01029
11573 FORCEMOT EQ FORCE MOTORS LIMITED INE451A01017
14592 FORTIS EQ FORTIS HEALTHCARE LTD INE061F01013
4717 GAIL EQ GAIL (INDIA) LTD INE129A01019
7406 GLENMARK EQ GLENMARK PHARMACEUTICALS INE935A01035
13528 GMRAIRPORT EQ GMR AIRPORTS LIMITED INE776C01039
1181 GODFRYPHLP EQ GODFREY PHILLIPS INDIA LT INE260B01028
10099 GODREJCP EQ GODREJ CONSUMER PRODUCTS INE102D01028
17875 GODREJPROP EQ GODREJ PROPERTIES LTD INE484J01027
1232 GRASIM EQ GRASIM INDUSTRIES LTD INE047A01021
16783 GVT&D EQ GE VERNOVA T&D INDIA LTD INE200A01026
2303 HAL EQ HINDUSTAN AERONAUTICS LTD INE066F01020
9819 HAVELLS EQ HAVELLS INDIA LIMITED INE176B01034
7229 HCLTECH EQ HCL TECHNOLOGIES LTD INE860A01027
4244 HDFCAMC EQ HDFC AMC LIMITED INE127D01025
1333 HDFCBANK EQ HDFC BANK LTD INE040A01034
467 HDFCLIFE EQ HDFC LIFE INS CO LTD INE795G01014
1348 HEROMOTOCO EQ HERO MOTOCORP LIMITED INE158A01026
1363 HINDALCO EQ HINDALCO INDUSTRIES LTD INE038A01020
1406 HINDPETRO EQ HINDUSTAN PETROLEUM CORP INE094A01015
1394 HINDUNILVR EQ HINDUSTAN UNILEVER LTD. INE030A01027
1424 HINDZINC EQ HINDUSTAN ZINC LIMITED INE267A01025
25844 HYUNDAI EQ HYUNDAI MOTOR INDIA LTD INE0V6F01027
4963 ICICIBANK EQ ICICI BANK LTD. INE090A01021
21770 ICICIGI EQ ICICI LOMBARD GIC LIMITED INE765G01017
18652 ICICIPRULI EQ ICICI PRU LIFE INS CO LTD INE726G01019
14366 IDEA EQ VODAFONE IDEA LIMITED INE669E01016
11184 IDFCFIRSTB EQ IDFC FIRST BANK LIMITED INE092T01019
220 IEX EQ INDIAN ENERGY EXC LTD INE022Q01020
1512 INDHOTEL EQ THE INDIAN HOTELS CO. LTD INE053A01029
14309 INDIANB EQ INDIAN BANK INE562A01011
11195 INDIGO EQ INTERGLOBE AVIATION LTD INE646L01027
5258 INDUSINDBK EQ INDUSIND BANK LIMITED INE095A01012
29135 INDUSTOWER EQ INDUS TOWERS LIMITED INE121J01017
1594 INFY EQ INFOSYS LIMITED INE009A01021
7852 INOXWIND EQ INOX WIND LIMITED INE066P01011
1624 IOC EQ INDIAN OIL CORP LTD INE242A01010
20261 IREDA EQ INDIAN RENEWABLE ENERGY INE202E01016
2029 IRFC EQ INDIAN RAILWAY FIN CORP L INE053F01010
1660 ITC EQ ITC LTD INE154A01025
6733 JINDALSTEL EQ JINDAL STEEL LIMITED INE749A01030
18143 JIOFIN EQ JIO FIN SERVICES LTD INE758E01017
17869 JSWENERGY EQ JSW ENERGY LIMITED INE121E01018
11723 JSWSTEEL EQ JSW STEEL LIMITED INE019A01038
18096 JUBLFOOD EQ JUBILANT FOODWORKS LTD INE797F01020
2955 KALYANKJIL EQ KALYAN JEWELLERS IND LTD INE303R01014
12092 KAYNES EQ KAYNES TECHNOLOGY IND LTD INE918Z01012
13310 KEI EQ KEI INDUSTRIES LTD. INE878B01027
13359 KFINTECH EQ KFIN TECHNOLOGIES LIMITED INE138Y01010
1922 KOTAKBANK EQ KOTAK MAHINDRA BANK LTD INE237A01036
9683 KPITTECH EQ KPIT TECHNOLOGIES LIMITED INE04I401011
19234 LAURUSLABS EQ LAURUS LABS LIMITED INE947Q01028
1997 LICHSGFIN EQ LIC HOUSING FINANCE LTD INE115A01026
9480 LICI EQ LIFE INSURA CORP OF INDIA INE0J1Y01017
3220 LODHA EQ LODHA DEVELOPERS LIMITED INE670K01029
11483 LT EQ LARSEN & TOUBRO LTD. INE018A01030
24948 LTF EQ L&T FINANCE LIMITED INE498L01015
17818 LTM EQ LTM LIMITED INE214T01019
10440 LUPIN EQ LUPIN LIMITED INE326A01037
2031 M&M EQ MAHINDRA & MAHINDRA LTD INE101A01026
19061 MANAPPURAM EQ MANAPPURAM FINANCE LTD INE522D01027
15380 MANKIND EQ MANKIND PHARMA LIMITED INE634S01028
4067 MARICO EQ MARICO LIMITED INE196A01026
10999 MARUTI EQ MARUTI SUZUKI INDIA LTD. INE585B01010
22377 MAXHEALTH EQ MAX HEALTHCARE INS LTD INE027H01010
509 MAZDOCK EQ MAZAGON DOCK SHIPBUIL LTD INE249Z01020
31181 MCX EQ MULTI COMMODITY EXCHANGE INE745G01043
2142 MFSL EQ MAX FINANCIAL SERV LTD INE180A01020
4204 MOTHERSON EQ SAMVRDHNA MTHRSN INTL LTD INE775A01035
14947 MOTILALOFS EQ MOTILAL OSWAL FIN LTD INE338I01027
4503 MPHASIS EQ MPHASIS LIMITED INE356A01018
23650 MUTHOOTFIN EQ MUTHOOT FINANCE LIMITED INE414G01012
357 NAM-INDIA EQ NIPPON L I A M LTD INE298J01013
6364 NATIONALUM EQ NATIONAL ALUMINIUM CO LTD INE139A01034
13751 NAUKRI EQ INFO EDGE (I) LTD INE663F01032
31415 NBCC EQ NBCC (INDIA) LIMITED INE095N01031
17963 NESTLEIND EQ NESTLE INDIA LIMITED INE239A01024
17400 NHPC EQ NHPC LTD INE848E01016
15332 NMDC EQ NMDC LTD. INE584A01023
11630 NTPC EQ NTPC LTD INE733E01010
6545 NYKAA EQ FSN E COMMERCE VENTURES INE388Y01029
20242 OBEROIRLTY EQ OBEROI REALTY LIMITED INE093I01010
10738 OFSS EQ ORACLE FIN SERV SOFT LTD. INE881D01027
17438 OIL EQ OIL INDIA LTD INE274J01014
2475 ONGC EQ OIL AND NATURAL GAS CORP. INE213A01029
14413 PAGEIND EQ PAGE INDUSTRIES LTD INE761H01022
17029 PATANJALI EQ PATANJALI FOODS LIMITED INE619A01035
6705 PAYTM EQ ONE 97 COMMUNICATIONS LTD INE982J01020
18365 PERSISTENT EQ PERSISTENT SYSTEMS LTD INE262H01021
11351 PETRONET EQ PETRONET LNG LIMITED INE347G01014
14299 PFC EQ POWER FIN CORP LTD. INE134E01011
25358 PGEL EQ PG ELECTROPLAST LTD INE457L01029
14552 PHOENIXLTD EQ THE PHOENIX MILLS LTD INE211B01039
2664 PIDILITIND EQ PIDILITE INDUSTRIES LTD INE318A01026
24184 PIIND EQ PI INDUSTRIES LTD INE603J01030
10666 PNB EQ PUNJAB NATIONAL BANK INE160A01022
18908 PNBHOUSING EQ PNB HOUSING FIN LTD. INE572E01012
6656 POLICYBZR EQ PB FINTECH LIMITED INE417T01026
9590 POLYCAB EQ POLYCAB INDIA LIMITED INE455K01017
14977 POWERGRID EQ POWER GRID CORP. LTD. INE752E01010
18457 POWERINDIA EQ HITACHI ENERGY INDIA LTD INE07Y701011
25049 PREMIERENE EQ PREMIER ENERGIES LIMITED INE0BS701011
20302 PRESTIGE EQ PRESTIGE ESTATE LTD INE811K01011
10990 RADICO EQ RADICO KHAITAN LTD INE944F01028
18391 RBLBANK EQ RBL BANK LIMITED INE976G01028
15355 RECLTD EQ REC LIMITED INE020B01018
2885 RELIANCE EQ RELIANCE INDUSTRIES LTD INE002A01018
9552 RVNL EQ RAIL VIKAS NIGAM LIMITED INE415G01027
2963 SAIL EQ STEEL AUTHORITY OF INDIA INE114A01011
17971 SBICARD EQ SBI CARDS & PAY SER LTD INE018E01016
21808 SBILIFE EQ SBI LIFE INSURANCE CO LTD INE123W01016
3045 SBIN EQ STATE BANK OF INDIA INE062A01020
3103 SHREECEM EQ SHREE CEMENT LIMITED INE070A01015
4306 SHRIRAMFIN EQ SHRIRAM FINANCE LIMITED INE721A01047
3150 SIEMENS EQ SIEMENS LTD INE003A01024
13332 SOLARINDS EQ SOLAR INDUSTRIES (I) LTD INE343H01029
4684 SONACOMS EQ SONA BLW PRECISION FRGS L INE073K01018
3273 SRF EQ SRF LTD INE647A01010
3351 SUNPHARMA EQ SUN PHARMACEUTICAL IND L INE044A01036
3363 SUPREMEIND EQ SUPREME INDUSTRIES LTD INE195A01028
12018 SUZLON EQ SUZLON ENERGY LIMITED INE040H01021
27066 SWIGGY EQ SWIGGY LIMITED INE00H001014
3432 TATACONSUM EQ TATA CONSUMER PRODUCT LTD INE192A01025
3411 TATAELXSI EQ TATA ELXSI LIMITED INE670A01012
3426 TATAPOWER EQ TATA POWER CO LTD INE245A01021
3499 TATASTEEL EQ TATA STEEL LIMITED INE081A01020
11536 TCS EQ TATA CONSULTANCY SERV LT INE467B01029
13538 TECHM EQ TECH MAHINDRA LIMITED INE669C01036
312 TIINDIA EQ TUBE INVEST OF INDIA LTD INE974X01010
3506 TITAN EQ TITAN COMPANY LIMITED INE280A01028
3456 TMPV EQ TATA MOTORS PASS VEH LTD INE155A01022
3518 TORNTPHARM EQ TORRENT PHARMACEUTICALS L INE685A01028
1964 TRENT EQ TRENT LTD INE849A01020
8479 TVSMOTOR EQ TVS MOTOR COMPANY LTD INE494B01023
11532 ULTRACEMCO EQ ULTRATECH CEMENT LIMITED INE481G01011
10753 UNIONBANK EQ UNION BANK OF INDIA INE692A01016
10447 UNITDSPR EQ UNITED SPIRITS LIMITED INE854D01024
14154 UNOMINDA EQ UNO MINDA LIMITED INE405E01023
11287 UPL EQ UPL LIMITED INE628A01036
18921 VBL EQ VARUN BEVERAGES LIMITED INE200M01039
3063 VEDL EQ VEDANTA LIMITED INE205A01025
27969 VMM EQ VISHAL MEGA MART LIMITED INE01EA01019
3718 VOLTAS EQ VOLTAS LTD INE226A01021
25907 WAAREEENER EQ WAAREE ENERGIES LIMITED INE377N01017
3787 WIPRO EQ WIPRO LTD INE075A01022
11915 YESBANK EQ YES BANK LIMITED INE528G01035
7929 ZYDUSLIFE EQ ZYDUS LIFESCIENCES LTD INE010B01027

If you have any questions or require assistance, please reach out to our Customer Support Team at support@5paisa.com.

Thank you for choosing 5paisa.

Warm Regards,

Team 5paisa

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