** Shares of digital assets and blockchain platform operator OSL Group 0863.HK fall 7.8% to HK$16.6, on track for their biggest one-day pct drop since October 17

** Stock on track to snap four straight sessions of gains

** OSL plans sale of 104.7 mln new shares, or 11.6% of the enlarged share capital, to a key shareholder, raising HK$1.56 bln ($199.96 mln) to fund acquisitions and development of payment services and stablecoin business, among others

** Says the new shares will be issued at HK$14.9 each, a 17.2% discount to Wednesday's close of HK$18

** Key shareholder will buy the new shares following sale of the same amount of existing shares at the same price to third party investors

** YTD, stock down 1.2%, while the Hang Seng Composite Index tracking information technology firms .HSCIIT up 3.7%

($1 = 7.8015 Hong Kong dollars)

(Reporting by Donny Kwok)

((donny.kwok@thomsonreuters.com))