Prosperity Bancshares (PB) Stock Forecast & Price Target

Prosperity Bancshares is positioned to benefit from a durable combination of strong capital, disciplined credit, and meaningful balance-sheet repricing that should support earnings power even with loan growth expected to be flat to low-single digits over the next 12-18 months. Its fundamentals are reinforced by a pro forma CET1 ratio of 13.6%, total RBC of 14.6%, a 44% efficiency ratio, and management’s expectation for roughly 3.60% FY26 NIM and about 3.70% exiting FY26, with further upside from securities cash flows, higher reinvestment yields, and the accretive STEL acquisition set to close on July 1, 2026. The company’s conservative underwriting, pristine expected credit profile with no provision anticipated for the remainder of FY26, and proven ability to integrate acquisitions while preserving a low-cost Texas deposit base and strong market footprint create a compelling setup for sustained ROTCE and EPS expansion.

Prosperity Bancshares is facing a fundamentally muted growth outlook because organic loan growth was negative in 1Q26, down about 6% quarter over quarter excluding acquired loans, and management itself expects the balance sheet to be only flat year over year due to post-acquisition runoff and fierce competition for larger deals. While the pending STEL acquisition may support near-term earnings through a better NIM, stronger growth, and lower expected credit costs, the company’s earnings power remains constrained by its asset-sensitive balance sheet, which makes a faster decline in interest rates less favorable, and by the expectation that organic growth stays negative until 2H27. Even with opportunistic buybacks, lower core expense, and a potential ~$500-600M of annual pre-dividend earnings under Basel III mortgage RWA analysis, the lack of sustained organic expansion means EPS growth should remain more muted than peers and the stock’s fundamentals remain challenged.