First Interstate BancSystem

FIBK

For the Los Angeles-based bank that operated until 1996, see First Interstate Bancorp.First Interstate BancSystem, Inc., is a financial holding company for both the company and its primary banking subsidiary First Interstate Bank. Both are based in Billings, Montana.

First Interstate BancSystem has been a target of short sellers for a while. The current short interest of 9.15% is roughly at the average of the last 12 months (8.56%).