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, Greif options traded 11 contracts against 607 open, a volume to open interest ratio of 0.02, well above its 20-day average. The table above lists the contracts with the highest ratios.

Calls made up 27.3% of Greif option volume on Nov 4, 2026, a put/call ratio of 2.67, so puts outnumber calls. The GEF option volume chart shows calls and puts by strike.

Greif Inc is a producer of industrial packaging products and services with manufacturing facilities located in many countries.