Markel Corporation co-CEO Richie Whitt said on Wednesday that he is “incredibly bullish” on the long-term prospects of the insurance-linked securities, despite seeing “fairly painful” years for both the companies and investors across the space. Markel Corporation co-CEO Richie Whitt said on Wednesday that he is “incredibly bullish” on the long-term prospects of the insurance-linked securities, despite seeing “fairly painful” years for both the companies and investors across the space.