Fuel Tech, Inc. (FTEK)

Last Closing Price: 1.56 (2026-01-20)

Put-Call Ratio (Open Interest) (30-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.

Fuel Tech, Inc. (FTEK) had 30-Day Put-Call Ratio (Open Interest) of 9.0000 for 2026-01-20.