** Shares of Japanese crypto trading platform Coincheck Group CNCK.O soar as much as 158%, hitting their highest since mid May
** Stock halted for volatility multiple times; last up 132.9% at $7.55
** CNCK bucks broader slump in crypto stocks as bitcoin, the world's largest cryptocurrency, fell nearly 7%
** About 18.7 million shares traded, nearly 584 times their 25-day moving avg
** Two brokerages covering the stock rate "hold"; median PT is $3.50 - data compiled by LSEG
** As of last close, CNCK down 63.6% YTD
(Reporting by Arasu Kannagi Basil in Bengaluru)
((ArasuKannagi.Basil@thomsonreuters.com))