** Shares of Marketingforce Management 2556.HK surge 15.8% to HK$42.56, their highest level since February 23
** Stock set for biggest one-day pct rise since January 12 and a fourth consecutive session of gains
** Marketing and sales software as a service (SaaS) solutions provider said its AI application business revenue more than doubled from a year earlier in first quarter of 2026
** Says gross revenue of precision marketing services grew 0.9% y/y
** YTD, stock up 19%, while the Hang Seng TECH Index .HSTECH down 8.6%
(Reporting by Donny Kwok)
((donny.kwok@thomsonreuters.com))