Thomas S. Gayner - Markel Asset Management Q4/2011 Fund Investing Strategies By Dividend Yield – Stock Capital, Investment. Here is a current portfolio update of Thomas S. Gayner’s - Markel Asset Management - portfolio movements as of Q4/2011 (December 31, 2011). In total, he held 97 stocks with a total portfolio worth of USD 1,895,525,000.