Put simply, Unusual Options Activity (UOA) represents anomalies in the Options Order Flow (i.e. the 6M+ options contracts traded on a daily basis).
We call these anomalies Unusual Options Activity, and oftentimes, this unusual activity serves as a leading indicator ahead of a large movement in the underlying stock.
There’s no single definition for Unusual Options Activity, but below are a few key characteristics that have proven to be indicative of large upcoming movements: