Unusual Options Activity

What makes it "unusual"

Unusual Options Activity (UOA · Unusual Options Activity) is trades that break their contract's habit: volume above its existing open interest, a premium several times its average, or a sudden rush into an expiration and strike nobody uses. The statistical anomaly is the filter, not trade size alone.

How it is spotted

A contract that normally trades two hundred a day prints ten thousand. Someone knows something, or thinks they do. Unusual activity does not tell you which. It shows where a closer look is worth the time, and that is its whole job: a daily shortlist drawn from the market itself.

Reading the candidate

After the catch come the questions. Opening or closing? A naked bet or one leg of a structure? A known event ahead (earnings, an FDA decision, a ruling)? Short-dated and far from the strike suggests sharp speculation. Long-dated and deep in the money suggests quiet conviction.

Hypothetical example

A small drug company's monthly call volume jumps to twenty times normal, at premiums that clearly point to buying, with a regulatory decision two weeks away. It is a classic pattern to watch. It can end either way, and confident gamblers are wrong often too.

Common mistake

Turning the list into automatic buy signals: a good share of unusual activity is hedges, rolls and expiration noise. It is a door into research, not an execution room.

What really makes it "unusual"

Not the raw volume but its ratio to Open Interest and to the ticker's average: volume above open interest means new positions, not closing. It is stronger in short-dated OTM contracts with a large premium and in the direction of the strike. Four conditions together are rare.

Where to see it on the platform

The Trade Scanner catches it as it prints using anomaly filters, and the flow tools show its full context (direction · Premium · expiration).

The flow scanner sorts by volume against open interest, expiration and direction.