** Shares of wealth manager AMP AMP.AX fall as much as 2.8% to A$1.303, their worst intraday pct loss since mid-April

** Stock among top losers on benchmark S&P/ASX 200 .AXJO index

** Co notes two separate class action proceedings filed against subsidiaries

** Adds, intending to defend proceedings

** Stock down 15.6% this year, including the day's move

(Reporting by Shivangi Lahiri in Bengaluru)

((shivangi.lahiri@thomsonreuters.com))