** Shares of IPH IPH.AX fall 21.5% to A$4.390, set for their worst day ever, if trend sustains

** Stock worst performer on ASX 200 benchmark index .AXJO

** The intellectual property services firm posts FY statutory NPAT of A$68.8 million ($44.22 million), missing Visible Alpha consensus estimate of A$81.6 million

** Posts FY underlying NPATA of A$120.6 million, lower than consensus estimate of A$126 million

** Declares final dividend of 19.5 Australian cents per share

** Stock down 12.7% YTD, including day's move

($1 = 1.5559 Australian dollars)

(Reporting by Himanshi Akhand in Bengaluru)

((Himanshi.Akhand@thomsonreuters.com))