(Updates)
** Shares of online therapy app Talkspace Inc TALK.O rise
~39% to $0.83
** Stock set for best day on record if gains hold
** Company in advanced talks to be acquired by telehealth
firm Amwell AMWL.N , according to a report on Sunday
** Report mentions a price of $1.50/shr for TALK, reflecting
a value of $200 mln; price represents a premium of 150% over
Talkspace's Friday close
** However, brokerage Cowen says that based on its channel
checks, it doesn't believe there is a process occurring as
suggested in the report
** Amwell and Talkspace decline to comment
** Including session moves, Talkspace shares down ~58% YTD
(Reporting by Raghav Mahobe)
((Raghav.Mahobe@thomsonreuters.com))