ROSEN, A TRUSTED AND LEADING LAW FIRM, Encourages Western Alliance Bancorporation Investors to Inquire About Securities Class Action Investigation - WALNovember 06, 2025 7:40 PM EST | Source: The Rosen Law Firm PANew York, New York--(Newsfile Corp. - November 6, 2025) - WHY: Rosen Law Firm, a global investor rights law firm, continues to investigate potential securities claims on behalf of shareholders of Western Alliance Bancorporation (NYSE: WAL) resulting from allegations that Western Allia ...