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Find the trades that don't belong.

A $500K trade is routine in one stock and extraordinary in another. Every large order is measured against similar contracts, so the list shows you what is truly out of place.

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Included with Trader. The free tools summarise each stock's last session.

Most unusual buying by stockReal data · Tue, Nov 10
NVDA 12 unusual buysHighest score 99.9 $71.3M 94% puts AMD 4 unusual buysHighest score 99.4 $3.8M 90% calls MU 3 unusual buysHighest score 99.7 $3.4M 92% puts TSLA 3 unusual buysHighest score 99.6 $3.4M 91% calls SMH 2 unusual buysHighest score 99.6 $1.9M 62% calls
The Unusual Options Activity screen with session totals and a premium chart above a blurred list of scored alerts.
The Unusual Options Activity screen on a real session. Trader shows every alert behind the blur.

Cleaned before it's ranked

Arbitrage, index box spreads and package legs come out first, so a bookkeeping trade cannot top the list.

Scored against similar contracts

Each large order is compared with the closest group that has enough history, and tiers are cuts of the last twenty sessions.

Explained in a sentence

Every alert says what traded, how it was read and why it scored the way it did.

Size only means something next to normal.

Each large order is compared with the closest group of similar contracts that has enough history: the same stock, moneyness, expiry and time of day where there is enough, and a wider group where there is not. It is ranked on how abnormal, how aggressive and how clearly read it was.

Tiers are percentile cuts. Extreme is the top 0.1% of the last twenty sessions, so the list stays a readable size on a quiet Tuesday and on a CPI print.

Get alerted when one hits your names

Unusual for this stock

Premium per trade ($)
Unusual sizeTypical activity
The same dollar size can be ordinary in one name and rare in another.

Facts stay facts. Estimates say so.

The trade is a fact. Which side it hit and whether it opened a new position are inferences, so each carries a confidence, and opening trades are checked against open interest the next morning.

The score ranks how unusual a trade is. It is not a price forecast, and we publish what the tape can and cannot tell you.

See what we measure

What every alert tells you

Observed
Contract, premium, size, volume and open interest
Inferred
Which side of the quote it hit, and sweep or block
Estimated
Whether it opened a new position, with a confidence
Ranked
Its percentile against the last twenty sessions
Observed, inferred and estimated readings are kept apart.

Track the rest of the money.

All features
Whale money

Options Flow

Every large options trade as it prints.

 Big money

Order Flow

See whether offers are lifted or bids are hit.

 Big money

Dark Pool

Block trades printed away from the exchanges.

 Informed money

Insider Trades

Executives, directors and 10% owners, from SEC Form 4.

 Disclosed money

Politician Trades

House, Senate and executive-branch disclosures.

See what's out of place today.

Trader ranks the unusual activity live, through the session.

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