W.R. Berkley (WRB) Stock: Mitsui Stake, $1 Special Dividend and 2026 Outlook After 14% Pullback
W.R. Berkley shares traded near $66.77 on December 8, 2025, down about 14% for the week after Mitsui Sumitomo Insurance disclosed a 12.5% stake. The drop followed profit-taking and news that MSI acquired shares from entities linked to the Berkley family, not from the company itself. WRB remains up 15% year to date but trades 15% below its November high.