Pre-Market Bid Runs Into SPY Call Wall at Open

GAMMA BRIEF AI Generated 2026-05-18

Equity futures are coming into Tuesday with modest overnight gains — SPY pre-market traded as high as 741.27, pressing right against the 740 call wall identified in options positioning. VIX has slipped another 3.86% to 18.43, signaling that implied volatility is deflating even as markets hold near recent highs.

The setup is more nuanced than the green pre-market print suggests. SPY net GEX is negative at -$4.56B, meaning dealers are net short gamma and price swings can amplify in either direction. With 68.6% of SPY volume in 0DTE contracts and the call wall sitting exactly where pre-market is trading, the open is a decision point — not a free pass higher.

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 7180

Net GEX +$17.2B

SPY CHOP

Call Wall 740

Put Wall 738

Max Pain 720

Net GEX $4.6B

QQQ CHOP

Call Wall 715

Put Wall 710

Max Pain 670

Net GEX $1.6B

IWM CHOP

Call Wall 280

Put Wall 275

Max Pain 274

Net GEX $2.2B

ⓘ 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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Unusual flow analysis for subscribers

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Facts — Draw Your Own Conclusions

→SPY net GEX: -$4.56B — negative gamma regime; dealers amplify moves in both directions.

→SPY call wall: 740, put wall: 738 — pre-market last at 741.00, already above the call wall.

→QQQ net GEX: -$1.63B; call wall 715, put wall 710; pre-market last 713.20, below call wall.

→IWM net GEX: -$2.20B; call wall 280, put wall 275; pre-market last 279.04.

→VIX pre-market: 18.43 (-3.86%); VVIX: 92.94 (-5.11%) — vol and vol-of-vol both compressing.

→SPY 0DTE volume share: 68.6% — elevated intraday gamma sensitivity near key strikes.

→GLD pre-market last 419.78 vs. prior RTH open 430.18 — gold sold off sharply in yesterday's session; SLV pre-market 70.04 vs. prior RTH open 77.20 — silver similarly weak.

→No unusual options activity above $50M threshold recorded for today's session — directional flow signal absent.

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

Key Themes

SPY call wall test at openNegative GEX across ETFs — move amplification riskVIX/VVIX vol compressionGold/silver sharp prior-session selloff — risk-on rotation signal

Directional Calls

SPY BULLISH

QQQ BULLISH

IWM NEUTRAL