Sippican Capital Advisors lessened its stake in Western Alliance Bancorporation (NYSE:WAL – Get Rating) by 3.4% in the 4th quarter, HoldingsChannel.com reports. The institutional investor owned 23,800 shares of the financial services provider’s stock after selling 835 shares during the period. Western Alliance Bancorporation comprises 2.2% of Sippican Capital Advisors’ investment portfolio, making the stock […]