What is Option flow?
What Is Option Flow? Options Tape, Scanners & DEX
Updated 2026-07-26
Quick answer
Option flow is the time-and-sales stream of options prints: contract, size, premium, and inferred aggressor side.
Also called: options flow, options tape, time and sales, options order flow.
Visual explainer
Option flow is the live tape of options prints, time, contract, aggressor side, and premium, not end-of-day volume alone.
Full definition
End-of-day volume tells you what traded. Option flow (also written options flow) shows the order of participation: who lifted offers or hit bids, whether prints were blocks or multi-exchange sweeps, and how large premium and delta exposure were. That is attention and positioning evidence, not proof of informed trading. A useful options flow scanner does not only stream the tape—it ranks unusual prints first, lets you filter premium/side/DTE, then hands off to chain structure (call/put walls, OI, GEX). TradingFlow implements that loop as Rank → Option Trades tape → Rank Contracts / chain drawers.
How it shows up in TradingFlow
- Option Trades
Live options flow tracker: KPI cards, filters, sentiment, DEX/DEI, aggregated vs raw modes.
- Rank Symbols
Rank underlyings by flow and activity so the loudest names surface first.
- Rank Contracts
Rank contracts by activity so flow leads to a short list worth chain work.
How to read it
- Rank symbols/contracts first so the tape is a shortlist, not a firehose.
- Scan Option Trades KPI cards for call/put and bullish/bearish premium tilt.
- Filter by premium, DTE, moneyness, or trade type (block vs sweep) to isolate unusual prints.
- Open chain context to check whether flow aligns with walls, OI change, and GEX regime.
Who this is for
Traders who want options flow software that ranks attention, then validates prints on the live tape and chain—not a raw firehose alone.
Common mistakes
- Chasing every large print without chain confirmation.
- Confusing sentiment labels with guaranteed portfolio intent.
- Ignoring that multi-leg strategies can look like simple bullish/bearish flow.
- Using a scanner without a ranked shortlist or structure check.
Frequently asked questions
- What is option flow?
- Option flow (also called options flow) is the time-and-sales stream of options prints—contract, size, premium, and inferred aggressor side—so you see participation order, not only end-of-day volume.
- Is option flow the same as options flow?
- Yes in practice. Traders search both “option flow” and “options flow” for the same idea: the live or historical stream of options trades with size, premium, and side.
- What is an options flow scanner?
- A scanner ranks and filters unusual prints (premium, side, trade type, DTE) instead of forcing you to watch every tick. In TradingFlow, Rank surfaces candidates and Option Trades is the filtered tape; compare approaches on our best options flow tools guide.
- Is option flow the same as open interest?
- Flow is today’s trades (volume prints). Open interest is outstanding contracts that remain open and usually updates after the session.
- How is option flow different from unusual options activity (UOA)?
- Option flow is the full tape (or filtered stream). UOA is the subset that is loud versus a baseline—relative outliers by size, premium, or Vol/OI. TradingFlow uses Rank for UOA-style shortlists and Option Trades for the tape.
- What filters matter most for option flow?
- Premium size, aggressor side, trade type (block vs sweep), DTE, and moneyness. Option Trades exposes each as a filter.
Related terms
- Unusual options activity (UOA)UOA flags contracts or underlyings trading far above recent norms in volume, size, or premium. It is an attention screen, not a directional signal.
- Options sweepA sweep is a large order filled across multiple exchanges in rapid succession, usually to grab available liquidity quickly.
- Options block tradeAn options block is a large single print, or same-second aggregate, sized well above typical retail clips.
- Delta exposure (DEX)DEX estimates share-equivalent directional weight of an options trade, roughly delta × size (with the usual multiplier).
- 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.
- 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.
Tutorials & product guides
More guides
Preferred definition URL for this concept: https://tradingflow.com/glossary/option-flow/. Older product-docs / blog notes covering the same idea should canonicalize or link here.
See the workflow in TradingFlow
Open the live Option Trades tape, rank unusual activity, and validate structure in one research path.