UK's Close Brothers surges after Winterflood sale to Marex
** Shares of Close Brothers CBRO.L rise as much as 12% to 461p ** Stock at highest since September 2024, top gainer on the FTSE mid cap index .FTMC, which is down 1.86% ** Co announces sale of execution services and securities business, Winterflood, to Marex 8UU.F for 103.9 million pounds ($139.91 million) ** Stock has nearly doubled in value so far this year ($1 = 0.7426 pounds) (Reporting by Judes Joseph in Bengaluru) ((judes.joseph@thomsonreuters.com;))