Options flow  /  Gamma exposure

See where
the flow lands.

A large print is only a blip until you know where it sits. FlowRadar flags unusual options activity and maps it against live gamma exposure — so you read positioning, not noise.

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Educational & informational · Not investment advice

Two layers, one view

Flow tells you what happened. Gamma tells you what it means.

Most alert feeds show you the print and stop there. FlowRadar keeps the two layers side by side, so every flagged trade carries the positioning context around it.

Layer 01 — Unusual activity

What we flag

Signals that separate genuinely unusual prints from ordinary chain churn.

Vol / OIVolume outrunning open interest — new positioning, not turnover.
SweepsAggressive orders taken across multiple exchanges to fill fast.
PremiumOutsized dollar notional on a single strike or expiry.
OI shiftDay-over-day open-interest jumps that confirm positions stuck.
SkewLopsided call vs put demand relative to the ticker's norm.
Layer 02 — Gamma exposure

Where it lands

The dealer-positioning map that turns a print into a location on the board.

Call wallStrike with the heaviest positive gamma — where rallies tend to stall.
Put wallHeaviest negative gamma below spot — where selling tends to slow.
Zero-gamma flipThe pivot between pinning and trending behaviour.
RegimeLong-gamma (mean-revert) vs short-gamma (trend) at a glance.
ProfileNet GEX across the whole chain, front and next expiry.
Built to teach, not just alert

Every term, in plain language.

FlowRadar ships with the vocabulary built in. Hover any signal in the app for a one-line explanation and a worked example — so newer traders learn the map while they use it.

Gamma wall

A strike where dealer gamma is concentrated enough to act like magnetic support or resistance.

Zero-gamma flip

The price level where net dealer gamma crosses zero and hedging behaviour reverses.

Sweep

An order filled aggressively across venues at once — usually a sign of urgency.

Vol / OI ratio

A day's volume measured against standing open interest to spot fresh positioning.

Short gamma

Dealers hedge with the move, which tends to amplify trends and volatility.

Long gamma

Dealers hedge against the move, which tends to pin price and dampen ranges.

Notional premium

The total dollars committed to a trade — size that ordinary flow rarely reaches.

Put/call skew

The demand balance between downside and upside, read against a ticker's own baseline.

Signal over noise

How a print becomes a signal.

01

Ingest the chain

Licensed options data across every listed strike and expiry, refreshed through the session.

02

Baseline the ticker

Each name is measured against its own history — unusual is relative, never one-size-fits-all.

03

Score the exposure

Black-Scholes gamma per strike builds the net-GEX profile, walls, and flip.

04

Place it on the map

Flagged flow is positioned against the gamma profile, so you see context, not a lone alert.

A block at the call wall reads differently than the same block below the flip.
That distinction is the whole product. FlowRadar is built so you never have to piece the two together by hand under a live tape.
Plans at launch

Start on the fundamentals. Scale into the desk.

Indicative tiers for launch. Founding waitlist members get early access and locked-in pricing.

Chart
$0 / forever

Learn the map with delayed data and the full glossary.

  • End-of-day gamma profiles
  • 5 tickers incl. SPX
  • Walls, flip & regime
  • Full education library
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Pro
$39 / mo

Live unusual-activity alerts mapped to gamma, session-long.

  • Intraday flow + gamma
  • 150+ tickers, SPX & mega caps
  • Unusual-activity alerts
  • Front & next-expiry profiles
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Desk
$129 / mo

Everything in Pro, plus data access and history.

  • API access
  • Historical GEX & flow
  • Custom alert rules
  • Priority coverage requests
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Get on the radar.

Join the founding waitlist for early access, launch pricing, and the education drops we send while we build.