BUZZ-Australia's APM Human slumps on discounted buyout bid from private equity firm

** Shares of Australia's APM Human Services International

fall as much as 30.1% to A$1.14, their biggest intraday loss since Jan 18

** APM receives a buyout bid from U.S. private equity firm Madison Dearborn Partners, valuing the health and human services provider at A$1.28 bln ($840.70 million)

** Madison Dearborn, which already has an over 29% stake in co bids for the shares it does not already own for A$1.40 apiece, a 14.1% discount to APM's last closing price

** Co sees underlying net profit after tax and before amortisation for FY24 between A$95 mln and A$105 mln , lower than A$178.2 mln posted last year

** Stock hits lowest since Feb 16

** Stock has risen 33.1% this year, as of last close

($1 = 1.5225 Australian dollars)

(Reporting by Rishav Chatterjee in Bengaluru)

((Rishav.Chatterjee@thomsonreuters.com;))