Zions Bancorp ZION posted weaker-than-expected results for the first quarter on Monday. The company reported first-quarter revenue of $795 million, missing analyst estimates of$797.07 million, according to Benzinga Pro. The bank reported first-quarter earnings of $1.13 per share, missing analyst estimates of$1.17 per share. "Credit quality remained in very good shape during the quarter, with nonperforming assets stable compared with last quarter at 0.51% of loans and leases and annualized net charge-offs ...