W. R. Berkley leads weeks' financial gainers; China fintechs drop the most Property and casualty insurer W. R. Berkley (NYSE: WRB ) +57% finished the week as the largest percentage gainer within the financial sector (with a market cap of $2B+). Cryptocurrency lender Silvergate Capital (NYSE: SI ) +16.6% jumped as bitcoin ( BTC-USD ) gained slightly by 1% in the week ended March 11; Asset manager Janus Henderson (NYSE: JHG ) +7% gained after Trian Fund raised its active stake in the company to 17.6% from 16.9% ; Another asset manager, Blue Owl Capital (NYSE: OWL ) +6.8% rose...