** Hong Kong shares of Bilibili 9626.HK drop 13.5% to HK$140.5 after the mobile gaming company missed Q3 earnings estimates

** Stock hits lowest level since Sept. 25, top pct loser in Hang Seng Tech Index .HSTECH which climbs 0.6%

** U.S.-listed stock BILI.O fell 12.6% on Thursday

** Bilibili reports Q3 adjusted EPS at 0.57 yuan ($0.0788), below estimates of 0.61 yuan, according to data compiled by LSEG

** Cost of revenues grew 9% YoY to 4.76 bln yuan, while Q3 advertising revenue missed estimates

** Zephirin Group reiterates "Strong Sell" rating and trims price objective to HK$95 from HK$90, saying it sees negatives including high cost, cautious industry outlook and regulatory oversight

** Citi, with "Neutral/High Risk" rating, says the results are decent with beat on gaming revs and non-GAAP OPM

** "With revs mix shifting toward ads and gaming, the expansion of GPM and non-GAAP OPM looks solid and is likely to continue ahead"

** Hong Kong shares up 57.5% YTD

(Reporting by Donny Kwok)

((donny.kwok@thomsonreuters.com))