GEX and Option Flow for Index Traders

Recommended workflow

1. Step 1

   Set structural levels

   Identify call/put walls and gamma-dense strikes on the index or major ETF chain.

   Open related surface →

2. Step 2

   Watch premium direction

   Option Trades KPI cards for bullish/bearish and call/put tilt during the session.

   Open related surface →

3. Step 3

   Track the contracts

   Rank Contracts for the specific expiries (including short-dated) driving the narrative.

   Open related surface →

Product capabilities that matter

• Asset-type filters

  Focus tape on index/ETF/stock as needed for the session.

• Wall + tape pairing

  Structure levels and live prints in one research habit.

Frequently asked questions

Do you cover 0DTE?

Short-dated flow is part of the live tape and ranking problem. Use DTE filters and treat 0DTE as high-noise unless structure agrees. See the 0DTE glossary page.

Related glossary

• Gamma exposure (GEX)GEX estimates aggregate dealer gamma from listed options. Positive gamma tends to dampen moves; negative gamma tends to amplify them. Option gamma is the building block; a gamma squeeze is a feedback loop when short-gamma hedges chase price higher.
• Call wallA call wall is the strike above spot with the densest call open interest or call-side gamma. Traders often treat it as resistance when dealers hedge.
• Put wallA put wall is the strike below spot with the densest put open interest or put-side gamma. Traders often treat it as support when dealers hedge.
• Dealer hedgingDealer hedging is market makers buying or selling the underlying to stay near delta-neutral as price and gamma change.
• 0DTE (zero days to expiration)0DTE options expire the same trading day. Gamma and theta move fastest near the money on that clock.
• Pin riskPin risk is expiration uncertainty when spot sits near a strike with large open interest: assignment and last-minute hedging get noisy.

Related personas

• Options Flow for Day TradersDay traders need speed with a filter: see what is printing now, rank what is unusual, then validate structure before risking capital. TradingFlow is built for that same-session loop.
• GEX and Options Flow for Volatility TradersVol traders live in regimes. GEX and IV set the weather; flow shows whether customers are paying for convexity or harvesting premium now.
• Real-Time Option Flow for ScalpersScalping with options flow is attention management. KPI cards and tight filters shrink the tape to tradable bursts; structure is a quick invalidation check, not a multi-hour thesis.
• Call Walls for Index TradersIndex sessions often trade as a conversation between spot and open-interest walls. Call walls frame upside resistance; they need flow confirmation before you treat them as hard stops.