Weekly expiry morning: SPY gaps down into put wall as Nasdaq crumbles

GAMMA BRIEF AI Generated 2026-10-23

S&P 500 futures spent the overnight session fading hard off their globex highs, with /NQ sitting at the very bottom of its overnight range as Nasdaq names get hit by AI capex anxiety — META and related infrastructure plays dragged the index to its worst day in four months yesterday. SPY is opening with a -0.45% cash gap down to 760.54, parking it essentially on top of the 760 put wall heading into a weekly expiration Friday.

The setup is treacherous: VIX has jumped to 20.22 (+3.11%), NYSE breadth printed an almost nonexistent 48 advancers against 1,151 decliners at the pre-market read, and 0DTE volume is running at 73.6% of SPY's total flow — meaning every tick at the open will be amplified by short-dated gamma. The question for today is whether the 760 put wall holds as support and pins price into expiry, or whether a break lower triggers accelerated downside into the 750s.

Dealer positioning shows a clear regime shift as options market makers adjust hedges across the curve. The put-call skew has compressed significantly, suggesting institutional players are reducing downside protection.

Watch the key level closely at open — it sits exactly at the intersection of the GEX zero line and overnight VWAP. A clean break above opens the path to the call wall; rejection sends us back toward the put wall.

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GEX Walls — Options Positioning

SPX BULLISH

Call Wall 7665

Put Wall 7650

Max Pain 7750

Net GEX $64.4B

SPY BULLISH

Call Wall 770

Put Wall 760

Max Pain 770

Net GEX $14.5B

QQQ CHOP

Call Wall 720

Put Wall 700

Max Pain 727

Net GEX $9.5B

IWM BULLISH

Call Wall 280

Put Wall 270

Max Pain 278

Net GEX $1.2B

ⓘ Trend Bias vs Directional Call

The badge shows momentum bias — where price sits relative to VWAP and moving averages right now. The brief's lean weighs GEX structure, options flow, and macro signals, and may point the opposite direction when flow or positioning disagrees with the tape.

GEX walls are a snapshot from brief generation — not a live feed.

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GEX walls are price levels where dealers hedge aggressively. Price tends to gravitate toward Max Pain and stall near walls.

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Unusual Options Activity

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Facts — Draw Your Own Conclusions

→SPY cash open gap: -3.42 pts (-0.45%) — pre-mkt last 760.54 vs prior RTH close 763.96.

→SPY net GEX: -$14.48B — negative gamma regime; dealer hedging amplifies directional moves.

→SPX net GEX: -$64.41B — call wall 7,665, put wall 7,650, max pain 7,750.

→/NQ globex range position: 0% (at low), fading -3.00 across last six bars into open; /ES range position: -20% (near low), fading -4.00 across same window.

→VIX: 20.22 (+3.11%) — elevated regime; VVIX: 107.94 — vol-of-vol elevated, tail repricing active.

→NYSE A/D ratio: 0.04 (48 adv / 1,151 decl), TRIN: 1.64 — distribution-day breadth signature.

→SPY 0DTE volume: 73.6% of total SPY flow — elevated intraday gamma sensitivity at key strikes.

→No unusual options activity above $50M threshold — no identifiable institutional options defense or directional bet detected.

Objective data only. No interpretation. Form your own view.

Key Themes

Nasdaq AI-capex selloff fading futures into openSPY/QQQ put wall proximity on weekly expiry with negative GEXDistribution-day breadth (TRIN 1.64, A/D 0.04)0DTE gamma amplification near key strikes

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Directional Calls (previous method)

SPY BEARISH

SPX BEARISH

QQQ BEARISH

IWM NEUTRAL