Prospector Partners LLC lifted its position in W. R. Berkley Co. (NYSE:WRB – Free Report) by 0.6% in the 4th quarter, HoldingsChannel reports. The firm owned 194,775 shares of the insurance provider’s stock after purchasing an additional 1,185 shares during the quarter. W. R. Berkley makes up about 1.7% of Prospector Partners LLC’s portfolio, making […]