WeeklyExpiry Pin Holds Between Walls; Small-Caps Quietly Outperform Into Close

GAMMA BRIEF AI Generated 2026-08-14

Friday's session was a tale of two tapes: SPY slipped -0.26% while IWM quietly gained +0.44%, closing near session highs and outperforming large-cap tech for the second consecutive session. The divergence wasn't random — GEX walls at 775 and 780 for SPY contained the entire day's range, while over $214M in 0DTE SPY put sweeps at the open signaled institutional caution that kept a lid on any breakout attempt.

With VIX settling at 14.25 and gold bid +0.59% against a fractionally lower SPY, the risk-off undercurrent was real even if the magnitude was modest. The real story heading into Monday is whether the breadth broadening — IWM strength, NYSE advancers outpacing decliners 1437 to 1280 — represents a genuine rotation or a one-day divergence ahead of a potentially quiet summer week.

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 BEARISH

Call Wall 7800

Put Wall 7775

Max Pain 7590

Net GEX +$56.8B

SPY BEARISH

Call Wall 780

Put Wall 775

Max Pain 760

Net GEX +$10.7B

QQQ BULLISH

Call Wall 735

Put Wall 730

Max Pain 705

Net GEX +$3.3B

IWM CHOP

Call Wall 310

Put Wall 295

Max Pain 295

Net GEX +$1.9B

ⓘ 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

→SPY net GEX: +$10.74B — high positive gamma regime, structurally constraining range.

→QQQ net GEX: +$3.35B; IWM net GEX: +$1.88B — all three in positive gamma.

→SPX 0DTE put sweep at 7800 strike — $77M premium, vol/OI 15.7x, 09:01 ET, sentiment: bearish_bet.

→SPY 0DTE put sweep at 777 strike — $70M premium, vol/OI 50.9x, 09:32 ET, sentiment: bearish_bet.

→SPY 0DTE put sweep at 778 strike — $67M premium, vol/OI 37.1x, 09:32 ET, sentiment: bearish_bet.

→TSLA 0DTE call sweep at 340 strike — $68M premium, vol/OI 15.4x, 09:32 ET, sentiment: bullish_bet.

→VIX: 14.25 (-0.07%), regime: LOW (complacency); VVIX: 87.48 (flat) — vol structure benign.

→SPY 0DTE volume: 74.2% of total volume — elevated intraday gamma effects confirmed. GLD +0.59% vs SPY -0.26% — flight-to-safety divergence active on a weekly expiry Friday.

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

Key Themes

Weekly expiry GEX pin: SPY contained between 775 put wall and 780 call wall all sessionBearish 0DTE sweep cluster ($214M+) front-ran SPY weakness at the openBreadth broadening: IWM +0.44% vs SPY -0.26%, NYSE A/D 1.12 — rotation into small-capsFlight-to-safety signal: GLD +0.59% on a down-SPY weekly expiry Friday

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Directional Calls

SPY BEARISH

QQQ NEUTRAL

IWM BULLISH