Option activity is usually called unusual when a contract trades much more volume than its open interest, which can mean traders are opening new positions.

On Nov 4, 2026, Vir Biotechnology options traded 449 contracts against 11.12K open, a volume to open interest ratio of 0.04, in line with its 20-day average. The table above lists the contracts with the highest ratios.

Calls made up 98.7% of Vir Biotechnology option volume on Nov 4, 2026, a put/call ratio of 0.01, so calls outnumber puts. The VIR option volume chart shows calls and puts by strike.

Vir Biotechnology Inc is a clinical-stage biopharmaceutical company focused on powering the immune system by discovering and developing medicines for serious infectious diseases and cancer.