** Shares of crypto custody and trading firm Bakkt Holdings BKKT.N more than double to $29.70 in afternoon trading
** Trump Media and Technology Group DJT.O in talks to buy company in all-stock deal, FT reports
** Trading in stock halted multiple times for volatility
** BKKT, its backer Intercontinental Exchange ICE.N and DJT did not immediately respond to Reuters requests for comment
** Stock had lost ~80% YTD, as of last close
(Reporting by Niket Nishant in Bengaluru)
((Niket.Nishant@thomsonreuters.com))