Western Alliance Bank signage is displayed on the Western Alliance Bancorp Headquarters in downtown Phoenix, Arizona, on April 27, 2023. - Shares in leading US banks, including JPMorgan Chase, were down in late morning trading in New York on Tuesday. Meanwhile those in regional banks suffered huge declines. Shares of PacWest Bancorp sank around 35 percent, while Comerica lost 13.6 percent. (Photo by Patrick T. Fallon / AFP)