Market report · 21 Oct 2026
Stock market today, 21 Oct 2026. What moved, who bought, what’s next.
On Wednesday 21 October 2026, 171 stocks rose and 1253 fell; FIIs were net buyers of ₹1,022 Cr in cash and DIIs net buyers of ₹1,614 Cr; Cement & building materials was the best sector (+0.8%).
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Session recap: options
How each index’s options traded from the open to the close today, for its nearest expiry. Spot every 15 minutes; PCR is the dashed line below.
NIFTY 50 27 Oct expiry
22,738last-1.16%0.64PCR0.83 at open14.2%ATM IV13.3–15.7% today22,900max painwas 23,000
- Opened 23,004, high 23,116 at 09:36, low 22,659 at 14:47, last 22,738 (-1.16% from the open, a 1.99% range). It finished near the low of the day.
- PCR 0.83 → 0.64: call writing outpaced put writing through the day.
- Gamma walls, the strikes with the most option gamma above and below the price: call side 23,200 → 23,000, put side 23,000 → 22,500. The zone option sellers are defending moved lower during the day.
- At-the-money IV 13.3% → 14.2%, straddle 317 → 331 (+4%): option premiums got richer.
- It closed above the gamma flip at 22,609. Above it, option dealers’ hedging tends to dampen moves; a break below it tends to make moves larger.
BANK NIFTY 27 Oct expiry
54,893last-1.37%0.91PCR0.91 at open15.1%ATM IV14.3–16.8% today55,500max painwas 55,600
- Opened 55,657, high 55,851 at 09:36, low 54,710 at 13:49, last 54,893 (-1.37% from the open, a 2.05% range). It finished near the low of the day.
- PCR 0.91 → 0.91: puts and calls were added at a similar pace.
- Gamma walls, the strikes with the most option gamma above and below the price: call side 56,000 → 55,000, put side 55,500 → 54,000. The zone option sellers are defending moved lower during the day.
- At-the-money IV 15.1% → 15.1%, straddle 872 → 851 (-2%): most of the fall in premium was time decay and the move, not volatility.
- It closed above the gamma flip at 54,617. Above it, option dealers’ hedging tends to dampen moves; a break below it tends to make moves larger.
FINNIFTY 27 Oct expiry
24,658last-1.45%0.80PCR0.79 at open16.9%ATM IV5.3–17.9% today25,000max painunchanged
- Opened 25,020, high 25,113 at 09:40, low 24,572 at 14:47, last 24,658 (-1.45% from the open, a 2.16% range). It finished near the low of the day.
- PCR 0.79 → 0.80: puts and calls were added at a similar pace.
- Gamma walls, the strikes with the most option gamma above and below the price: call side 25,600 → 25,000, put side 25,000 → 24,600. The zone option sellers are defending moved lower during the day.
- At-the-money IV 17.9% → 16.9%, straddle 435 → 426 (-2%): option premiums cheapened as volatility eased.
- It closed above the gamma flip at 24,601. Above it, option dealers’ hedging tends to dampen moves; a break below it tends to make moves larger.
SENSEX 22 Oct expiry
73,514last-0.95%0.57PCR0.67 at open18.5%ATM IV18.1–22.0% today73,500max painwas 74,000
- Opened 74,222, high 74,674 at 09:40, low 73,242 at 14:47, last 73,514 (-0.95% from the open, a 1.93% range). It finished near the low of the day.
- PCR 0.67 → 0.57: call writing outpaced put writing through the day.
- Gamma walls, the strikes with the most option gamma above and below the price: call side 75,000 → 74,000, put side 74,000 → 73,000. The zone option sellers are defending moved lower during the day.
- At-the-money IV 20.3% → 18.5%, straddle 710 → 570 (-20%): option premiums cheapened as volatility eased.
- It closed above the gamma flip at 73,301. Above it, option dealers’ hedging tends to dampen moves; a break below it tends to make moves larger.
Market
Breadth, sectors and strength.
NIFTY 50––
Advances / declines171 / 1253of 1,425 stocks
Above 200-day average41%above 50-day: 17%
New highs / lows5 / 15252-week, closing basis
- Best sectors today: Cement & building materials +0.8%, IT +0.7%, Oil & gas -0.7%
- Weakest: Utilities -4.2%, Capital goods -3.3%, Textiles -3.1%
- Rotation, leading: Financial services, FMCG, Cement & building materials, Oil & gas, IT, Consumer durables, Media
- Rotation, improving: Consumer Services, Realty, Power, Metal, Auto, Construction, Telecom
- Rotation, weakening: Services
- Rotation, lagging: Chemicals, Pharma & healthcare, Capital goods, Textiles, Utilities
- 137 stocks have an RS rating of 90+; 17 have their RS line at a new high: Sky Gold And Diamonds, Shanti Gold International, Oriental Aromatics, PC Jeweller, Sambhv Steel Tubes.
Smart money
Who bought, who sold, and how much was delivered.
FII net (cash)₹1,022 Crbought
DII net (cash)₹1,614 Crbought
FII index futures long10%+1 pts in a week
Big-buyer days6343 stocks on a 3-in-10 streak
- 63 big-buyer days (delivery 3× normal or more): Signatureglobal (India) 20.8× (-0.6%), Sasken Technologies 10.9× (-1.7%), eMudhra 10.0× (-20.0%), PRUDENT 9.1× (-4.1%), Precision Camshafts 8.4× (-9.0%).
- 1 stocks showed institutional-buying signs together: PC Jeweller +2.1%.
- 144 bulk and block deals; largest outside HFT firms: Adani Energy Solutions: Pi Opportunities Aif V Llp buy ₹661 Cr; Adani Energy Solutions: Prazim Trading And Investment Comp sell ₹661 Cr; Manipal Health Enterpri L: Pi Opportunities Aif V Llp buy ₹120 Cr; Manipal Health Enterpri L: Prazim Trading And Investment Comp sell ₹120 Cr.
- Short selling disclosed for 19 Oct: 59 stocks; most shorted Tata Consultancy Services, Waaree Energies, Utkarsh Small Finance Bank, Prestige Estates.
FII/DII data →Institutional buying →Bulk & block deals →High delivery →
F&O
Futures build-up, options positioning and the ban list.
Long build-up15stocks
Short build-up131stocks
NIFTY PCR0.86higher than 32% of days
NIFTY max pain23,000spot 22,889
- Biggest long build-up: Anand Rathi Wealth OI +21.0%, ABB India OI +13.7%, Federal Bank OI +4.8%, CG Power OI +4.6%, Siemens OI +4.3%.
- Biggest short build-up: 360 ONE WAM OI +13.6%, Waaree Energies OI +12.3%, Prestige Estates OI +10.5%, Premier Energies OI +9.7%, TCS OI +8.4%.
- Longest streaks: Anand Rathi Wealth 6 days of long build-up, Cummins India 5 days of short build-up, Fortis Healthcare 4 days of short build-up, Glenmark Pharma 4 days of short build-up.
- In the F&O ban for the next session: AMBUJACEM, KAYNES, SAIL.
Corporate actions, IPOs & surveillance
- Coming ex-dates: JSW Dulux 22 Oct split; VRL Logistics 22 Oct buyback; Angel One 22 Oct dividend (0.5% yield); Tips Music 22 Oct dividend (0.9% yield); Azad India Mobility 23 Oct split; Tech Mahindra 23 Oct dividend (0.8% yield); Artemis Electricals and Projec 23 Oct dividend (0.0% yield); GARUDA 23 Oct dividend (0.0% yield).
- IPOs open or upcoming: Jio Platforms Limited (21 Oct–23 Oct, ₹1065 to ₹1119); Paras Healthcare Limited (21 Oct–23 Oct, ₹660 to ₹693).
- Under NSE surveillance: 137 long-term ASM, 66 short-term ASM, 77 GSM.
Tomorrow, 22 Oct
What is on the calendar for the next session.
- 38 board meetings on Thursday 22 Oct: Accelya Solutions India Limite (results), Adani Energy Solutions (results), Adani Total Gas (results), Bansal Wire Industries (results), Beta Drugs (results), BLUESTONE (results), Bonlon Industries Limited (fund raising), CHENNPETRO (results), CIE Automotive India (results), Colgate Palmolive (results), Creditaccess Grameen (results), Cybertech Systems And Software (results), Cyient (results), Fairchem Organics (results), Garware Hi-Tech Films (results), Hatsun Agro Product (results), Havells India (results), HPCL (results), Indo Thai Securities (results), The Jammu & Kashmir Bank (results)….
- Going ex-date: JSW Dulux (split), VRL Logistics (buyback), Angel One (dividend), Tips Music (dividend).
- F&O ban: AMBUJACEM, KAYNES, SAIL.
Compiled automatically from NSE’s daily files and company filings. Information and education only, not investment advice; ChartMine is not a SEBI-registered adviser.