The Gamma Brief

Wednesday, October 28, 2026

Generated 6:21 AM EDT PRIOR SESSION
Gamma Brief thumbnail for Wednesday, October 28, 2026
LEVEL MAP
PUT WALL
7,700
SPX
7,723
ES
7,747
CALL WALL
7,750
◀ EM
EM ▶
S2
7,653
S1
7,688
R1
7,747
R2
7,771
PUT WALL: 23 PTS
CALL WALL: 27 PTS
PIVOT SUPPORT
PIVOT RESISTANCE
EM: ±85 PTS
ES FUTURES
DUAL WALL BREACH RISK (EM covers both walls)
PUT CUSHION: 23 PTS | CALL CUSHION: 27 PTS | WALL SPREAD: 50 PTS | EM/SPREAD: 1.70x | ES GAP: +24 PTS
Regime
POSITIVE
Signal
WAIT
Spot / ES
7,723 / 7,747
Put Wall
7,700
Call Wall
7,750
GEX Flip
—
Expected Move
85
Net GEX
+$2.2B
⚠️ GEX METHODOLOGY NOTE: Primary GEX calculated at SPX close 7722.6 (Tuesday, October 27). ES-implied regime (POSITIVE) also computed for gap context at ES 7765.25. See methodology: gexlog.com/methodology

Cold Open

08:30 ET brings the Goods Trade Balance. The market structure remains entirely provisional until the print drops.

Hook

It is Wednesday, October 28th, 6:45 AM Eastern. ES futures are currently trading at 7765. Yesterday, we warned that a breach of the 7650 Put Wall would unleash volatility. While that floor held to the tick, the upside expansion validated the high-volatility read as the Call Wall broke. Today, the geometry shifts. If this gap holds, ES is pinned directly against resistance. If it fails, the downside air pocket is massive.

Regime Assessment

We are officially on Day 1 of a positive gamma regime. Net dealer gamma exposure sits at positive 1.1 billion dollars. In this environment, dealers are net long options, structurally positioned to sell into rallies and buy into dips, dampening volatility. Cumulative GEX remains positive across the entire observable chain, so there is no in-range flip. However, the overnight regime is vulnerable. High-impact data before the open could force dealer re-hedging and rewrite this environment entirely.

Critical Pivots

The standard options regime anchors the Call Wall at 7775 and the Put Wall at 7650. The expected move band, anchored strictly to the SPX prior close, projects a range of 7637 to 7808. ES futures have already cleared the 7746 level, meaning the first active resistance is R2 at 7771, just five points above current price. ES sits 115 above Put Wall, 10 from Call Wall. Gap fade reprices floor to 73. ES futures are pinned heavily toward the Call Wall compared to the Put Wall.

Overnight Drivers

Pre-market price action is being heavily dictated by semiconductor earnings and pre-Fed positioning. SK Hynix posted a massive profit jump, dragging the broader chip sector higher and driving ES futures up 0.09 percent while the VIX ticked up 0.12 percent and the 10-year yield shed 1 basis point. Sector flows are highly bifurcated: Basic Materials and Technology are leading the tape, up over 1.3 percent, while Financial Services and Energy are lagging by roughly a percent as rate pressures persist.

Risk Radar

The threat matrix is dominated by the Federal Reserve. We get the FOMC Statement and Interest Rate Decision at 14:00 ET, followed by the press conference at 14:30 ET. But the immediate hurdle is the Goods Trade Balance at 08:30 ET. I want to hear from you in the comments — with ES already pinned near the Call Wall, does this 08:30 print break the resistance, or does positive gamma absorb it? Drop your read below. Any surprise in the Fed statement language this afternoon will easily override dealer mechanics, triggering asymmetric volatility expansion.

Conditions Read

The environment is consistent with mean-reverting, range-bound structures following the initial data drops. Chasing breakouts in this regime is running into a wall of dealer supply. Income-oriented, defined-risk setups are the appropriate alternative when positive gamma dampens the tape. Our primary bullish plan is already active, with price holding well above the 7687 trigger; the objective now shifts toward targeting R2 at 7771 post-FOMC. A sustained breakdown below 7652 invalidates the upside read and opens the trap door toward the Put Wall.

Bottom Line

We have a nascent positive gamma regime battling a 5 out of 5 calendar risk score. Sizing must account for the Fed overriding dealer flows this afternoon.

Sign Off

The data drops before the open. Let the market show its hand first. Levels set. Bias defined. Good luck out there.

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