Alto Ingredients, Inc. (ALTO)

Last Closing Price: 5.52 (2026-06-04)

Put-Call Ratio (Open Interest) (20-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

Alto Ingredients, Inc. (ALTO) had 20-Day Put-Call Ratio (Open Interest) of 0.0458 for 2026-06-04.