Weekly expiry pin holds SPY; 0DTE put sweeps signal caution into Tuesday open

GAMMA BRIEF AI Generated 2026-05-22

Friday's session ran a tight but meaningful range before closing nearly flat — SPY opened at 746.24, touched a high of 748.94, and settled at 745.73, right where it started the week. The session looked benign on the surface, but $406M in 0DTE SPX put sweeps clustered between 7485 and 7500 told a different story under the hood.

Small caps were the standout: IWM hit a session high of 286.52, briefly clearing the midday 286 call wall target before fading to close at 284.97. VIX dropped 5.38% to 16.70, suggesting volatility sellers were active into the close — but those late put sweeps suggest at least some institutional money was buying downside protection heading into a three-day weekend.

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 CHOP

Call Wall 7500

Put Wall 7400

Max Pain 7325

Net GEX +$72.3B

SPY CHOP

Call Wall 750

Put Wall 730

Max Pain 725

Net GEX +$10.1B

QQQ BEARISH

Call Wall 720

Put Wall 705

Max Pain 685

Net GEX +$1.1B

IWM BULLISH

Call Wall 300

Put Wall 270

Max Pain 275

Net GEX $0.2B

ⓘ Trend Bias vs Directional Call

The badge shows momentum bias — where price sits relative to VWAP and moving averages right now. The brief's directional call weighs GEX structure, options flow, and macro signals, and may point the opposite direction when a rally runs into a call wall or flow turns bearish.

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.

Stock GEX — Extended

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Unusual Options Activity

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Facts — Draw Your Own Conclusions

→SPX net GEX: +$72.30B — deeply positive gamma regime; SPY net GEX: +$10.13B.

→SPY session range: open 746.24, high 748.94, low 744.48, close 745.73 — 4.46-point range, flat close.

→QQQ session high 722.04 briefly cleared the 720 call wall (+2.04 above); closed at 717.33, below VWAP 719.41.

→IWM session high 286.52 cleared the midday 286 call wall target; closed at 284.97, above VWAP 285.01, trend bias bullish (score +49, confidence 70%).

→0DTE SPX put sweeps: four trades totaling ~$406M across 7485, 7490, 7495, 7500 strikes — vol/OI ratios 31.7x to 501.5x — all classified bearish_bet.

→VIX: 16.70, -5.38% on the session — NORMAL regime; VVIX: 91.16, -3.84%.

→NYSE A/D ratio: 1.38 (net +423); TRIN: 0.38 — intraday internals modestly bullish despite flat index close.

→SYNTHESIS: Intraday internals (TRIN 0.38, A/D 1.38) lean constructive, but $406M in 0DTE SPX put sweeps at 7485-7500 (501x vol/OI) signal institutional late-session downside positioning — mixed signal on next-session direction.

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

Key Themes

Weekly expiry pin — SPY/QQQ capped at call walls with +$72B SPX GEX; flat close masks meaningful intraday range0DTE put sweep cluster — $406M across SPX 7485-7500 into the close; directional bearish bets into long weekendIWM outperformance — cleared 286 call wall target intraday, retains bullish trend bias into TuesdayQQQ call wall failure — brief pierce of 720 not sustained; bearish trend bias confirmed by close below VWAP

Directional Calls

SPY NEUTRAL

QQQ BEARISH

IWM BULLISH