Gamma Exposure Screener: Discover High-Gamma Symbols at a Glance
Rank the full equity universe by dealer gamma positioning — gross GEX, net GEX, or distance to the gamma flip — then drill into call walls, put walls, and a premium GEX surface for any symbol in one compact drawer.
GEX Screener in TradingFlow is a snapshot-based discovery app that answers: which symbols have the most meaningful gamma structure in the latest available option chain? You get market-wide ranking, regime context, per-symbol key levels, and a premium GEX surface view — all from one screen.
What the GEX Screener does
The app uses T+1 snapshot data: option open interest and gamma from the prior close. Rankings and metrics are clearly labeled so you always know you're looking at snapshot-era data, not live intraday.
- Rank symbols by gross GEX, net GEX, or distance to the gamma flip.
- See regime at a glance via KPI cards and table badges (Positive, Negative, Near Flip).
- Inspect any symbol in a drawer with call wall, put wall, flip line, and a strike-level GEX ladder.
- Live spot enrichment — after the snapshot loads, current spot prices are fetched and overlaid; a pulsing green "Spot enriched" indicator confirms freshness.
- Filter and search the table and switch ranking modes without losing context.
KPI cards: market-wide context
At the top of the screen you'll see five cards:
- Positive Regime — Count (and share) of symbols where dealer net gamma is positive. Dealers are long gamma; hedging tends to dampen volatility.
- Negative Regime — Symbols where dealers are net short gamma. Hedging flows can amplify moves.
- Near Flip — Symbols within the flip band (net GEX near zero). Regime is unstable; small OI or price changes can flip the sign.
- Total Gross GEX — Sum of gross gamma exposure across the universe (size of the gamma market).
- Flip Distance — How far the market's representative spot is from the zero-gamma level (when available).
Ranking modes
| Mode | What it surfaces |
|---|---|
| Top Gross GEX | Largest total gamma (often large-cap names). Use the normalized GEX Ratio column to compare across market caps. |
| Top Net GEX | Strongest directional imbalance (most call- or put-dominated). |
| Closest to GEX Flip | Symbols nearest the zero-gamma level — most sensitive to breakouts or mean reversion. |
Secondary sort is always by symbol so ordering is stable.
Toolbar and filters
- Symbol lookup — Type a ticker to jump directly to a symbol's drawer.
- Asset type — Filter by Stock, ETF, or Index.
- Gamma Regime — Filter by Positive / Negative / Near Flip to narrow the universe.
- Gross GEX range — Set a min/max gross GEX filter to focus on a size tier.
- Reset — One click to clear all filters and ranking back to default.
Ranking chart and table
- Ranking chart — Bar chart of top symbols by the active ranking metric. Scan leaders without scrolling the table. Click any bar to open that symbol's drawer.
- Data table — Sortable columns: symbol, net GEX, gross GEX, GEX Ratio (normalized by market cap), flip distance, regime badge, and more. Pagination and preview mode (limited rows for fast loads) are available.
Clicking a row opens the symbol inspection drawer for that symbol.
Symbol drawer: key levels + GEX surface
When you open a symbol (from the table, chart, or via direct lookup), the drawer shows:
Ladder tab (available to all)
- Regime — Positive, Negative, or Near Flip, with a short explanation.
- Call wall — Strike with the largest call-side GEX.
- Put wall — Strike with the largest put-side GEX.
- Flip line (zero-gamma level) — Price level where cumulative signed gamma crosses zero. Spot above = positive gamma territory; spot below = negative. Distance-to-flip and direction (above/below) are shown.
- Strike ladder — Chart of call GEX, put GEX, and net GEX by strike so you can see where gamma is concentrated.
Surface tab (subscription)
The Surface tab provides a full two-dimensional GEX surface across strikes and expirations — showing where gamma is concentrated not just by strike, but across the full term structure. Use it to see whether gamma concentration is in near-term or longer-dated expiries, and where the dominant put/call walls are per expiration.
The drawer includes a "how to read" guide (expandable) so new users can interpret the chart and levels.
Watchlist integration
The ♥ icon on each table row adds or removes the symbol from your shared watchlist. The same watchlist is used across Option Trades, OI Change Rank, and Market Rank — so symbols you add here appear as a filter preset in every other app as well.
Data caveats
- Snapshot honesty — Every view shows that OI and gamma are from the prior close snapshot (T+1). No live GEX unless a separate overlay is added later.
- Live spot enrichment — Spot prices are fetched post-load to give current price context alongside snapshot GEX; the snap itself does not update intraday.
Where to find it
In TradingFlow, open Gamma Exposure Screener in the nav or go directly to /app/gamma-exposure-screener. Use the KPIs and ranking modes to find interesting names, then open the drawer to inspect call wall, put wall, and flip line before diving into Option Trades or other tools for full chain analysis.