0DTE Call Sweeps Surge Into FOMC Minutes as SPY Stalls at Call Wall

GAMMA BRIEF AI Generated 2026-05-20

Equities have had a full session of movement: SPY tagged 741.81 intraday — just above the 740 call wall flagged this morning — before pulling back to 738.91. The real story right now is half a billion dollars in 0DTE SPX call sweeps concentrated between the 7375 and 7410 strikes, with FOMC Minutes dropping at 14:00 ET and NVDA earnings after the close. Traders are making large, short-fuse bets that this market has more upside left today.

IWM is the quiet standout: it opened at 274.83, pushed all the way to 279.84, and is currently holding 278.39 — well above the 275 max-pain pin called this morning and close to the 280 call wall. Crude oil slid hard from a 102.79 high to 99.49 after a surprise 7.864M barrel inventory drawdown, an unusual move that may reflect refinery run cuts rather than demand strength. With two high-impact catalysts still ahead, the afternoon has the potential to resolve this choppy, indecisive tape in either direction.

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 7425

Put Wall 7400

Max Pain 7300

Net GEX +$38.4B

SPY CHOP

Call Wall 740

Put Wall 730

Max Pain 725

Net GEX +$2.0B

QQQ CHOP

Call Wall 710

Put Wall 700

Max Pain 683

Net GEX +$1.6B

IWM CHOP

Call Wall 280

Put Wall 270

Max Pain 273

Net GEX $1.4B

ⓘ 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

→DETERMINISTIC: SPY session range today: open 735.63, high 741.81, low 734.16, last 738.91 — call wall 740.00 was tagged intraday.

→DETERMINISTIC: 0DTE SPX call sweeps: five sweeps totaling >$421M premium at strikes 7375–7410; largest single sweep $136M at 7400 strike, vol/OI 10.2x.

→DETERMINISTIC: IWM last 278.39, session high 279.84, call wall 280.00, net GEX -$1.43B (negative gamma regime — moves amplified).

→DETERMINISTIC: SPY net GEX: +$1.99B; call wall 740, put wall 730, max pain 725.

→DETERMINISTIC: NYSE A/D ratio 2.74 (2014 advancers / 734 decliners), TRIN 0.99 — broad healthy tape.

→DETERMINISTIC: VIX 17.75 (+0.28%), VVIX 95.49 (+0.29%) — normal vol regime, modest event premium building into FOMC/NVDA.

→DETERMINISTIC: /CL crude: session high 102.79, last 99.49 — nearly $3.30 intraday reversal following EIA crude draw of -7.864M barrels vs -2.9M estimate.

→SYNTHESIS: 0DTE call sweeps at 7375–7410 SPX ($421M+) are a strong near-term upside bet, yet SPY trend bias reads CHOP with lower-highs price structure — flow is bullish but realized tape has stalled at the call wall, making directional resolution contingent on the 14:00 FOMC Minutes catalyst.

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

Key Themes

0DTE SPX call sweep cluster $421M+ at 7375–7410 — aggressive intraday upside betsFOMC Minutes 14:00 ET — binary catalyst for afternoon resolution of CHOP tapeIWM negative GEX amplification — small-cap moves outsized in either directionNVDA earnings AMC — QQQ 710 call wall and overnight direction hinge on the print

Directional Calls

SPY BULLISH

QQQ BULLISH

IWM BULLISH