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, Graham options traded 35 contracts against 877 open, a volume to open interest ratio of 0.04, well above its 20-day average. The table above lists the contracts with the highest ratios.

Calls made up 68.6% of Graham option volume on Nov 4, 2026, a put/call ratio of 0.46, so calls outnumber puts. The GHM option volume chart shows calls and puts by strike.

Graham Corp designs and manufactures mission-critical fluid, power, heat transfer, vacuum, and mixing technologies for the Defense, Energy & Process, and Space industries.