** Shares of British online trading platform Plus500 PLUSP.L up 5.9% at 4,498p
** Stock among top gainers on FTSE midcaps .FTMC which is up 0.74%
** PLUSP launches event-based prediction markets on its U.S. retail platform through partnership with Kalshi
** Plus500 Futures offering to enable retail customers to trade contracts on economic, financial, & geopolitical events through federally regulated Kalshi Klear LLC
** "This is an important new addition for PLUS, on top of the FanDuel CME deal," say analysts at Jefferies in a research note
** Adds, major validation of PLUS's technology & reliability, this is a significant potential revenue stream
** In 2025, stock rose ~39%
(Reporting by Ankita Bora in Bengaluru)
((Ankita.Bora@thomsonreuters.com))