MTB ▼ -3.9% - M&T Bank Corporation $MTB - M&T Bank Increases Prime Rate M&T Bank Corporation fell 3.9% today following its announcement of a prime rate increase. Higher prime rates typically pressure bank profitability by raising borrowing costs for consumers and businesses, which can reduce loan demand and net interest margins despite the benefit of higher yields on existing variable-rate loans. 16-SEP-2026 05:34 PM ET