** Chinese intelligent vehicle solutions provider Black Sesame International Holding 2533.HK soars as much as 55.5% to HK$43.85, highest since debut on Aug. 8, 2024

** Stock last up 37.6%; top pct gainer on Hang Seng Composite Index on IT firms .HSCIIT, which is up 2.3%

** Co's autonomous driving chips have been used by BYD in its Denza model EV, a mainland media reported

** BYD's Hong Kong shares 1211.HK gain 4.5%, while Shenzhen-listed stock 002594.SZ jumps 5.1%

(Reporting by Donny Kwok)

((donny.kwok@thomsonreuters.com))