Updates
** Shares of Webjet Group WJL.AX rise as much as 19.2% to A$0.900, hitting highest since Sept. 23
** Stock logs its biggest intraday pct gain since March 7, 2016
** Online travel agency receives takeover offer from ASX-listed Helloworld Travel HLO.AX to acquire all of co's shares HLL does not already own
** WJL says offer price of A$0.90/share is 19% premium to stock's last close
** HLL currently has a 17.27% stake in WJL
** Jefferies says buyout offer is "very attractive"
** Maintains "hold" rating and price target of A$0.81
** Stock down over 1% this year, including the day's move
(Reporting by Rajasik Mukherjee in Bengaluru)
((Rajasik.Mukherjee@thomsonreuters.com))