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Best Dealer Gamma Exposure (GEX) Platform in 2026

GEX is the single highest-information dealer-positioning lens for intraday traders. Most platforms either don't compute it or show a single aggregate. Here's what a proper GEX terminal looks like.

OptionsDeck Research 3 min readUpdated May 15, 2026

Dealer Gamma Exposure went from an institutional curiosity to a retail mainstream metric over the past three years. The platforms that compute it well are few: SpotGamma pioneered the space, OptionsDeck built a competing implementation as part of a wider terminal, and a handful of niche tools have appeared. Most "GEX dashboards" you'll find online are summary numbers, not strike-by-strike per-direction reads — and that distinction is the entire game.

What a real GEX platform must compute

  1. Per-strike net dealer gamma, not a single rolled-up number. The shape of the curve across strikes is what matters.
  2. Sub-minute refresh during market hours. GEX shifts as flow happens; daily snapshots are entertainment, not operator-grade data.
  3. Magnet strike identification — the single strike with the largest absolute gamma, where price gets pulled into close.
  4. Gamma flip level + spot-vs-flip indicator. Above the flip = compression regime. Below = expansion regime. Crossing it is a regime change.
  5. Call walls + put walls ranked. Top 3-5 per side by gamma weight. These are the levels dealers defend hardest.
  6. Velocity pockets. Strike clusters with near-zero gamma — the path of least resistance for momentum moves.
  7. Regime classification. Compression (positive net γ) vs Expansion (negative net γ) labeled clearly on every screen.
  8. Historical GEX. Today's read in the context of the last 60+ days so you know whether it's anomalous.

OptionsDeck's GEX implementation

  • Live GEX heatmap with strike-by-strike net gamma, magnet strike highlighted, flip level marked, and velocity pockets shaded. SPY/QQQ/IWM/SPX/NDX + any single name on demand.
  • 30-second refresh during market hours, cached intelligently to avoid hammering the Direct Feed rate budget.
  • Regime classification (Compression / Expansion) on every screen — banner across dashboard + per-ticker indicator on /scanners/0dte.
  • Integrated into the AI strategist — every AI idea reads dealer GEX before proposing a structure. Butterflies around the magnet, credit spreads under the flip, long premium in velocity pockets.
  • Cross-product surfacing — GEX shows up on the /flow scanner (so you see flow IN context of dealer positioning) and on /ticker/SYMBOL pages.
  • Methodology doc — exactly how OptionsDeck aggregates, signs, and labels gamma. No black box.

Comparison vs alternatives

  • SpotGamma: Pioneer + strongest standalone GEX shop. Best methodology pedigree. Limited integration with execution surface (no native order ticket, no multi-leg builder, no flow scanner). Best for traders who want GEX as a daily research input alongside another execution platform.
  • MenthorQ / GammaCharts: GEX-only point solutions. Strong on visualizations. No AI synthesis, no integrated flow, no multi-leg builder.
  • Unusual Whales: Has a GEX page but it's secondary to the flow product. Per-strike data exists but the dealer-positioning context isn't as developed as SpotGamma or OptionsDeck.
  • OptionsDeck: Per-strike GEX + AI synthesis + flow scanner + IV surface + multi-leg builder + paper trading + journal — single workflow at $149/mo Pro.

See the pricing page comparison table for the full feature parity matrix. The live GEX dashboard is a Pro feature ($149/mo); the 7-day free trial includes the AI Strategist on 15 core tickers so you can test the synthesis before subscribing.

Frequently asked questions

What is dealer GEX?

GEX = dealer Gamma Exposure. When market makers sell options to retail, they're short gamma — they have to hedge by buying when the underlying rises and selling when it falls. Net dealer gamma per strike, aggregated, determines whether dealer hedging dampens (positive GEX) or amplifies (negative GEX) intraday moves. It's the single highest-information dealer-positioning metric.

Why does GEX matter intraday?

(1) Positive GEX regime = mean-reverting tape. Sells get bought, rallies fade. Best for credit sellers + range traders. (2) Negative GEX = momentum amplification. Selling cascades, breakouts run. Best for long premium. (3) Crossing the gamma flip level intraday is a regime change — many of the biggest moves happen as dealer hedging behavior flips signs.

What features matter most in a GEX platform?

(1) Strike-by-strike net gamma (not just a single aggregate number), (2) sub-minute refresh during market hours, (3) magnet strike highlighting (biggest absolute gamma), (4) gamma flip level + spot-vs-flip indicator, (5) per-side call walls + put walls ranked, (6) regime classification (compression vs expansion), (7) historical GEX so you can see how today's regime compares.

OptionsDeck vs SpotGamma for GEX?

SpotGamma is the OG dedicated GEX shop with strong methodology + great daily SPX reads. OptionsDeck matches the per-strike GEX precision and adds: integrated flow scanner (see GEX context alongside the prints), IV surface + term structure, multi-leg strategy builder that tags trades with GEX context, AI strategist that reads GEX before proposing structures, dedicated 0DTE scanner. Single workflow at $149/mo Pro vs SpotGamma's GEX-focused $99-249/mo tiers.

Does GEX work outside SPX/SPY?

Yes for any liquid optionable name. OptionsDeck computes GEX for any ticker with sufficient option volume — typical use is the major indices (SPY, QQQ, IWM, SPX, NDX) plus mega-cap single names (NVDA, TSLA, AAPL, META, GOOG, MSFT). Less liquid names produce noisier reads since the OI itself is thinner.

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No card required. Your trial includes the AI Strategist on 15 core tickers, your journal, tracked plays, and the delayed flow scanner — upgrade anytime for live data, dealer GEX, the vol surface, and the full terminal.