** Shares of Bell Financial Group BFG.AX fall 5.7% to A$1.42, set for their worst day since May 21

** Financial services co trades ex-dividend; had declared a final dividend of 6.5 AU cents per share on February 18

** Stock at lowest level since February 23

** YTD, shares up 8%

($1 = 1.4178 Australian dollars)

(Reporting by Shruti Aagrwal in Bengaluru)

((Shruti.Agarwal@thomsonreuters.com))