UK's CAB Payments climbs on StoneX's buyout proposal at a premium
** Shares of cross-border payments processor CAB Payments CABP.L rise as much as 12.7% to 89p, second top gainer on FTSE smallcaps .FTSC index ** StoneX submits all-cash proposal for potential acquisition of co to CAB Payments Board at price of 95 pence per share, a 16.8% premium to CABP's last close ** Deal values CABP at 241.4 million pounds ($319.76 million) ** YTD, stock up ~27% ($1 = 0.7549 pounds) (Reporting by Megha Anilkumar Nair) ((MeghaAnilkumar.Nair@thomsonreuters.com;))