** Shares of Impax Asset Management Group IPX.L down nearly 5% at 165 p
** British investment manager reports FY assets under management at 26.1 billion pounds ($34.53 billion) vs 37.2 billion pounds a year ago
** Co reports 43.1% decrease in FY PBT at 27.8 million pounds and 16.6% drop in FY revenue at 141.9 million pounds
** IPX notes "Challenging market for active investment managers"
** YTD, up to Friday's close, stock had fallen nearly 30%
($1 = 0.7559 pounds)
(Reporting by Simone Lobo in Bengaluru)
((Simone.Lobo@thomsonreuters.com, +919920570373))