458 calls and 0 puts traded on Nov 4, 2026, 458 contracts in total. Open interest was 5.32K contracts. Over the past 30 days, volume averaged 266 contracts per day. The ALXO option volume chart shows volume by strike and expiration date.

ALX Oncology IV rank is 40, so its 30-day implied volatility of 261.5% is near the middle of its one-year range. Over the past year it ranged from 75.7% on May 20, 2026 to 537.7% on Apr 2, 2026. See the ALXO implied volatility history for a longer view.

The ALX Oncology put/call volume ratio was 0.00 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.04. The ALXO open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for ALX Oncology options about one week from expiration was $0.45, 66.9% below the $1.36 close. The ALXO max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 270.3%, options price a move of about ±$0.51 (±37.4%) over the next week, a range of roughly $0.85 to $1.87 from the Nov 4, 2026 close. The ALXO expected move chart shows it for every expiration date.