** Shares of Australia's Netwealth NWL.AX rise as much as 3.4% to A$27.39, their biggest intraday pct gain since December 12
** Stock emerges as top gainer on the ASX 200 benchmark index .AXJO, which is down 0.2%, as of 0234 GMT
** The financial services firm agrees to compensate affected customers of its superannuation master fund with estimated A$101 million ($66.66 million) after agreement with corporate regulator, Australian Securities and Investments Commission (ASIC)
** About 498,388 shares change hands, 1.1x the 30-day average
** Stock has fallen 6.2% this year, including the day's moves
($1 = 1.5152 Australian dollars)
(Reporting by Roshan Thomas in Bengaluru)
((Roshan.Thomas@thomsonreuters.com;))