Definition · updated 2026-10-21
Unusual options activity
Unusual options activity is trading in a contract that is far larger than its normal volume or its open interest, often in sweeps that hit several exchanges at once. It signals that a well-funded participant wants exposure quickly; reading why is the work, because it can be a bet, a hedge, or noise.
See it live: the live unusual activity tape.
What counts as unusual
Volume several times the contract's average or above its open interest, size in the hundreds of contracts or millions of dollars of premium, trades at the ask (bought) rather than the bid (sold), and repeat prints in the same strike over the session.
How to read it
Ask whether the print is opening (volume above open interest), which side it was executed on, and whether there is an obvious hedge on the other side. A bought call sweep on a stock with negative GEX below spot is a different setup from a block that merely rolls a position.
Frequently asked questions
- Is unusual options activity bullish?
- Only when it is bought calls or sold puts opened with conviction. Large put buying can be a hedge on a long stock position, which is neutral or even bullish for the holder.
- How do I see unusual options activity for free?
- OptionScout's Unusual Activity page shows sweeps and blocks on every US ticker on the free plan, refreshed every 30 seconds during market hours.