** Shares of OFX Group OFX.AX rise 8.4% to A$0.835, their highest since May 21
** Stock on track for best day since May 19, if gains hold
** International payments service provider posts quarterly net operating income of A$54.9 million ($36.3 million), up 11.3% from previous quarter
** About 1.3 mln shares change hands, 1.6x the 30-day average of 827,201
** Stock down nearly 41% YTD, including moves in current session
($1 = 1.5138 Australian dollars)
(Reporting by Jasmeen Ara Shaikh in Bengaluru)
((JasmeenAraIslam.Shaikh@thomsonreuters.com;))