First Interstate BancSystem (NASDAQ:FIBK – Get Free Report) announced its quarterly earnings data on Wednesday. First Interstate BancSystem Stock Down 0.5%Shares of NASDAQ FIBK opened at $36.66 on Thursday. First Interstate BancSystem has a 52-week low of $22.95 and a 52-week high of $38.78. About First Interstate BancSystem(Get Free Report)First Interstate BancSystem, Inc is a bank holding company headquartered in Billings, Montana. See AlsoReceive News & Ratings for First Interstate BancSystem Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for First Interstate BancSystem and related companies with MarketBeat.com's FREE daily email newsletter.