First Interstate BancSystem (FIBK) Q3 Earnings and Revenues Top Estimates Posted byZacks Equity Research October 26, 2021 Leave a comment on First Interstate BancSystem (FIBK) Q3 Earnings and Revenues Top Estimates First Interstate BancSystem (FIBK) delivered earnings and revenue surprises of 14.67% and 4.62%, respectively, for the quarter ended September 2021. Do the numbers hold clues to what lies ahead for…