With FIIs net short on futures going into expiry, expect option writers to defend high-OI strikes. Max-pain becomes a magnet, theta accelerates, and intraday moves get whippier than they look.

What to watch:Avoid carrying directional option longs through expiry without strong conviction — they bleed fast. Cash trades on the underlying indices are cleaner this week than option spreads.

Why is it pricing this way?

Overnight Setup global & macro backdrop

Overnight Global Cues

Risk-on overnight

S&P +0.43% · Nikkei -0.30%

Macro Backdrop

Crude / USDINR

Crude $87.1 (-0.9%) · USDINR 95.71 (-0.06%)

Where is money moving today?

Sector Money Flow based on sector-index momentum

↑Money flowing IN

Banks

+0.46%

↓Money flowing OUT

-0.46%

Pharma

-0.21%

Gold

4,624.1

+2.39%

Silver

69.5

+2.12%

Copper

6.6

+1.85%

Crude

87.1

-0.88%

USDINR

95.71

-0.06%

10Y UST

4.74%

+0.89%

What are derivative traders doing?

NIFTY Option Chain nearest expiry 2026-08-25 · spot 24,252 · EOD 2026-08-21

Writers expect Nifty between 24,000 and 24,300 this week — +0.2% upside, -1.0% downside.

downside-skewed

Call OI (writers)	Strike	Put OI (writers)
36,205 IV 22% Δ 0.90 θ -18.2 ν 4	23650	1,969,045
171,340 IV 19% Δ 0.92 θ -14.6 ν 3	23700	6,962,475
45,240 IV 20% Δ 0.88 θ -18.2 ν 4	23750	2,463,370
610,350 IV 18% Δ 0.88 θ -16.8 ν 4	23800	7,440,420
70,005 IV 17% Δ 0.87 θ -16.6 ν 5	23850	3,176,875
273,780 IV 16% Δ 0.86 θ -16.4 ν 5	23900	6,711,055
200,330 IV 15% Δ 0.84 θ -16.5 ν 5	23950	3,472,560
5,939,635 IV 13% Δ 0.82 θ -16.1 ν 6	24000 S	17,814,550
572,780 IV 13% Δ 0.79 θ -16.7 ν 6	24050	3,377,400 IV 9% Δ -0.15 θ -7.2 ν 5
2,777,515 IV 11% Δ 0.75 θ -16.7 ν 7	24100	8,737,365 IV 9% Δ -0.20 θ -8.3 ν 6
1,218,880 IV 11% Δ 0.69 θ -17.1 ν 8	24150	6,141,135 IV 9% Δ -0.27 θ -9.3 ν 7
9,122,165 IV 10% Δ 0.61 θ -17.2 ν 8	24200	15,503,670 IV 8% Δ -0.36 θ -9.8 ν 8
6,861,530 IV 10% Δ 0.53 θ -17.0 ν 9	24250 MP	6,958,770 IV 8% Δ -0.46 θ -9.7 ν 9
13,876,980 IV 10% Δ 0.44 θ -16.2 ν 9	24300 R	9,835,345 IV 8% Δ -0.58 θ -8.6 ν 9
4,574,635 IV 10% Δ 0.35 θ -14.6 ν 8	24350	1,989,780 IV 7% Δ -0.70 θ -6.2 ν 8
9,774,440 IV 10% Δ 0.26 θ -12.5 ν 7	24400	3,521,960 IV 7% Δ -0.82 θ -2.7 ν 6
3,715,790 IV 9% Δ 0.19 θ -10.2 ν 6	24450	563,745 IV 5% Δ -0.95 θ +2.2 ν 2
13,250,445 IV 9% Δ 0.13 θ -8.0 ν 5	24500	3,754,530
5,039,515	24550	184,340
8,538,010	24600	873,665
3,402,035	24650	172,965
6,814,405	24700	768,235
3,294,980	24750	93,275
7,231,640	24800	400,335
2,403,505	24850	52,845

What this tells you

Spot 24,252

Resistance (R) 24,300

Support (S) 24,000

Max Pain (MP) 24,250

Highest call-OI strike = where writers expect resistance. Highest put-OI strike = where writers expect support. Max-pain magnet pulls strongest in expiry week.

Strategy Builder multi-leg payoff for NIFTY options · 2026-08-25 expiry

Underlying: NIFTY · Spot: ₹ 24,252.00 · Expiry: 2026-08-25 · Lot: 75

Legs

Side

Type

Strike

Qty

Premium

Net premium—

Max profit—

Max loss—

Breakevens—

Position Delta—

Position Theta/day—

Position Vega/1% IV—

Payoff at expiry

F&O OI Buildup stock futures · total OI across all expiries · 2026-08-21

Long Buildup price up + OI up — fresh longs added

ZYDUSLIFE

+0.17%

OI +7.1%

COALINDIA

+0.65%

OI +5.3%

TATAELXSI

+0.91%

OI +5.3%

HINDZINC

+4.30%

OI +5.2%

JSWENERGY

+0.35%

OI +4.9%

LTF

+0.46%

OI +4.5%

NHPC

+0.05%

OI +4.5%

POWERINDIA

+2.51%

OI +4.0%

Short Covering price up + OI down — shorts closing

BDL

+3.03%

OI -12.0%

JUBLFOOD

+0.26%

OI -9.6%

ICICIPRULI

+2.83%

OI -8.9%

GODFRYPHLP

+0.40%

OI -7.4%

AMBER

+1.04%

OI -6.4%

VMM

+0.84%

OI -6.3%

PIIND

+0.35%

OI -4.8%

MANAPPURAM

+2.34%

OI -4.5%

Short Buildup price down + OI up — fresh shorts added

ASTRAL

-0.25%

OI +16.0%

ANGELONE

-0.83%

OI +15.1%

INDIGO

-1.23%

OI +8.2%

FORCEMOT

-0.94%

OI +7.8%

BSE

-1.22%

OI +7.5%

DIXON

-0.07%

OI +7.0%

RECLTD

-0.79%

OI +6.3%

DMART

-1.91%

OI +5.7%

Long Unwinding price down + OI down — longs closing

DALBHARAT

-0.89%

OI -9.2%

IRFC

-0.42%

OI -8.7%

SAIL

-0.05%

OI -8.2%

IREDA

-0.16%

OI -6.3%

HDFCAMC

-0.06%

OI -6.1%

UNOMINDA

-0.76%

OI -5.8%

HAVELLS

-0.30%

OI -5.6%

RVNL

-1.69%

OI -5.5%

Futures Basis Screener premium/discount of nearest-expiry futures to spot

↑ Premium · futures trading above spot

Symbol	Spot	Future	Basis %
SONACOMS	817.27	822.05	+0.58%
SAIL	173.48	174.46	+0.56%
MUTHOOTFIN	3,022.27	3,039.20	+0.56%
VMM	103.43	103.97	+0.52%
HCLTECH	1,302.51	1,309.30	+0.52%
HDFCBANK	726.96	730.45	+0.48%
PGEL	600.56	603.35	+0.47%
MARUTI	13,565.20	13,628.00	+0.46%

↓ Discount · futures trading below spot

Symbol	Spot	Future	Basis %
LTM	4,487.75	4,440.20	-1.06%
LODHA	1,241.86	1,229.60	-0.99%
BANKBARODA	246.98	244.78	-0.89%
DIVISLAB	8,596.29	8,523.50	-0.85%
CANBK	129.96	128.91	-0.81%
CIPLA	1,432.09	1,421.10	-0.77%
CROMPTON	252.00	250.10	-0.75%
HEROMOTOCO	5,734.90	5,692.00	-0.75%

Top Traded F&O Contracts where derivative volume is concentrated today

Contract	Type	Close	Traded Value	OI	OI Δ
NIFTY26AUG24200PE	IDO	45.50	7.06 L Cr	15,047,955	+1,758,965
NIFTY26AUG24250PE	IDO	62.90	6.66 L Cr	6,855,290	+1,877,785
NIFTY26AUG24300CE	IDO	72.55	6.40 L Cr	13,469,820	+3,683,940
NIFTY26AUG24300PE	IDO	84.95	5.61 L Cr	9,540,375	+2,063,100
NIFTY26AUG24250CE	IDO	99.65	5.31 L Cr	6,769,880	+2,599,285
NIFTY26AUG24200CE	IDO	132.70	4.36 L Cr	8,847,280	+438,685
NIFTY26AUG24400CE	IDO	33.90	3.11 L Cr	9,317,880	+1,097,200
NIFTY26AUG24350CE	IDO	50.50	2.91 L Cr	4,460,885	+1,406,340
NIFTY26AUG24500CE	IDO	13.90	2.65 L Cr	13,028,860	+514,215
NIFTY26AUG24000PE	IDO	11.90	2.52 L Cr	17,739,540	+1,391,650
NIFTY26AUG24150PE	IDO	32.30	2.32 L Cr	6,045,910	+1,393,860
NIFTY26AUG24100PE	IDO	22.95	2.28 L Cr	8,233,485	+611,065

Who's actually moving the money?

Smart Counterparty Activity 21-Aug-2026

1 FII buys · 6 MF buys / 1 sells · 1 Insurance buys · 1 Promoter sells · 137 deals totaling ₹3,037 Cr. Showing top 20 by value.

Stock	Type	Side	Qty	Value (₹ Cr)	Counterparty
NXT-INFRA Nxt-Infra Trust	Bulk+Block	SELL	26,350,000	247.29	ACTIS HIGHWAY INFRA LIMITED
AMAGI Amagi Media Labs Limited	Bulk+Block	BUY	3,248,305	181.91	SBI MUTUAL FUND MF
AMAGI Amagi Media Labs Limited	Bulk+Block	SELL	3,169,073	177.47	TRUDY HOLDINGS
AMAGI Amagi Media Labs Limited	Bulk+Block	SELL	2,727,000	152.71	ACCEL INDIA VI (MAURITIUS) LTD.
AMAGI Amagi Media Labs Limited	Bulk+Block	SELL	2,727,000	152.71	ACCEL GROWTH VI HOLDINGS (MAURITIUS) LTD.
NXT-INFRA Nxt-Infra Trust	Bulk+Block	BUY	11,700,000	109.80	LARSEN & TOUBRO LIMITED
AMAGI Amagi Media Labs Limited	Bulk+Block	SELL	1,864,948	104.44	AVP I FUND
AMAGI Amagi Media Labs Limited	Bulk+Block	BUY	1,840,979	103.09	SBI MUTUAL FUND MF
AMAGI Amagi Media Labs Limited	Bulk+Block	BUY	1,785,713	100.00	HDFC STANDARD LIFE INSURANCE COMPANY LTD Insurance
NXT-INFRA Nxt-Infra Trust	Bulk+Block	BUY	8,800,000	82.59	KOTAK MAHINDRA BANK LIMITED
SHANTIGEAR Shanthi Gears Ltd	Bulk+Block	BUY	2,064,713	77.49	TUBE INVESTMENT OF INDIA LIMITED
SHANTIGEAR Shanthi Gears Ltd	Bulk+Block	SELL	2,064,713	77.49	PACIFIC ASSETS TRUST PLC
PRSMJOHNSN Prism Johnson LTD	Bulk	SELL	6,180,291	66.73	SBI MUTUAL FUND MF
PRSMJOHNSN Prism Johnson LTD	Bulk	BUY	6,176,178	66.68	SBI MUTUAL FUND MF
KWIL Kwality Wall's (India) L	Bulk	BUY	13,326,862	63.44	JUNOMONETA FINSOL PRIVATE LIMITED
KWIL Kwality Wall's (India) L	Bulk	SELL	13,309,156	63.40	JUNOMONETA FINSOL PRIVATE LIMITED
NXT-INFRA Nxt-Infra Trust	Bulk	SELL	6,450,000	60.89	ACTIS HIGHWAY INFRA LIMITED
NXT-INFRA Nxt-Infra Trust	Bulk+Block	BUY	5,850,000	54.90	KOTAK MAHINDRA INVESTMENTS LIMITED
AMAGI Amagi Media Labs Limited	Block	BUY	934,444	52.33	ICICI PRUDENTIAL MUTUAL FUND MF
NXT-INFRA Nxt-Infra Trust	Bulk	BUY	3,575,000	33.64	LGT WEALTH INDIA PRIVATE LIMITED

Institutional Streaks consecutive sessions with FII / MF / Insurance activity on the same side

Stock	Side	Streak	Total Value	Window	Notable Buyers
CMLL	BUY	2d	₹ 139 Cr	2026-07-24 → 2026-07-27	CARNELIAN ASSET MANAGEMENT & ADVISORS PRIVATE LIMITED · GOLDMAN SACHS BANK EUROPE SE ODI · PLUTUS RESEARCH PRIVATE LIMITED
BLEL	BUY	2d	₹ 56 Cr	2026-08-19 → 2026-08-20	360 ONE MUTUAL FUND · PLUTUS RESEARCH PRIVATE LIMITED
GANDHAR	BUY	2d	₹ 44 Cr	2026-07-23 → 2026-07-24	SOCIETE GENERALE

What are institutions positioned for?

Institutional Positioning how FIIs are set up under the surface

FII Futures Posture

Net Short

net-long ratio -24.2%

FII Direction Streak

3 sessions

net accumulating futures

India VIX

11.20

Calm · +4.1% d/d

Days to Monthly Expiry

Thu, 26 Jun

Nifty PCR (EOD)

1.08

Balanced

Nifty Max Pain (EOD)

24,250

in line with spot (24,252)

Any patterns firing?

Event Signals 3 firing today

Smart Money Accumulating

FII futures net-long ratio +29.3pp; added 43,227 more call-longs than put-longs

What it means:FIIs sharply increased their long position on Nifty/BankNifty futures and bought materially more call options than put options on the same day.

What it implies:Foreign institutions are positioning aggressively for upside. Over 376 days backtested, BankNifty has averaged +1.5% in the next 5 trading sessions when this fires (67% hit rate, n=15).

bullish

FII Short Covering

FII index-futures shorts dropped 41.4% in a day

What it means:FII short positions on index futures dropped by 8% or more in a single day.

What it implies:Short sellers are buying back to close positions, removing downside pressure and often triggering a relief move. BankNifty has averaged +0.6% over the next 5 sessions (58% hit rate, n=24).

bullish

Monthly Expiry Imminent

Last Thursday of the month is Thu, 26 Jun — 0 day(s) away

What it means:Within 2 trading days of monthly F&O expiry (last Thursday).

What it implies:Option writers actively defend high-OI strikes near expiry. Theta accelerates, max-pain becomes a magnet, intraday moves get whippier. Context, not a prediction.

Experimental detector · insufficient historical fires to validate.

warning