** Jiumaojiu International Holdings 9922.HK jumps 7.5% to HK$2.72, highest since May 9

** Stock on course for biggest one-day pct rise since February 26

** Chinese cuisine restaurant operator plans to repurchase shares in the open market for up to HK$200 mln ($25.5 mln) in a deal to be financed by existing available cash reserves

** YTD, stock down 21.3%

($1 = HK$7.8475)

(Reporting by Donny Kwok)

((donny.kwok@thomsonreuters.com))