TwiceOver Blog Analyze a stock →

TwiceOver Blog

Option expiration and assignment

What happens to an option on its last day. Assignment is when the option's seller has to deliver on the contract.

All How options are priced Option expiration and assignment Earnings Mergers, acquisitions and spin-offs Reading SEC filings How markets work The economy and the Fed Other markets that move stocks Risk and position sizing Who owns what

No. 002 Fri 16 Oct 2026

Option expiration and assignment · Concept

An option writer's riskiest 90 minutes come after expiration day's closing bell