1 calls and 87 puts traded on Nov 4, 2026, 88 contracts in total. Open interest was 13.41K contracts. Over the past 30 days, volume averaged 298 contracts per day. The PEN option volume chart shows volume by strike and expiration date.

Penumbra IV rank is 24, so its 30-day implied volatility of 40.6% is in the lower part of its one-year range. Over the past year it ranged from 2.9% on Oct 9, 2026 to 159.4% on Jul 17, 2026. See the PEN implied volatility history for a longer view.

The Penumbra put/call volume ratio was 87.00 on Nov 4, 2026, so puts outnumber calls. The put/call open interest ratio was 3.12. The PEN open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Penumbra options about one week from expiration was $338.62, 5.0% above the $322.47 close. The PEN max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 46.0%, options price a move of about ±$20.54 (±6.4%) over the next week, a range of roughly $301.93 to $343.01 from the Nov 4, 2026 close. The PEN expected move chart shows it for every expiration date.