PacWest Bancorp PACW.O lost 2.30%, while Zions Bancorporation ZION.O inched lower 3.11%. By Shreyashi Sanyal, Shristi Achar A and Carolina Mandl May 10 (Reuters) - The Nasdaq led gains among Wall Street's main indexes on Wednesday as a slightly lower-than-expected increase in April inflation raised hopes that the Federal Reserve's interest rate hiking cycle is close to an end. The Nasdaq sustained its gains in part due to a 3.51% climb in Alphabet Inc GOOGL.Oas the company rolled out more artificial intelligence for its core search product in response to competition from Microsoft Corp MSFT.O.