jack ma ceo of chinese ecommerce giant alibaba speaks during his visit at the vivatech startups and innovation fair in paris on may 16 2019 shares of alibaba and tencent fell thursday after the wall street journal reported that the trump administration may add the chinese tech giants to a us blacklist the conglomerates shares slid around 4 on the hong kong stock exchange after the journal said officials were considering prohibiting americans from investing in the firms the report cited several people familiar with the matter the us government blacklisted 31 chinese companies in november over concerns that they support beijings military through an executive order us officials have been discussing expanding the executive order to expand the blacklist the journals sources said when the hong kong stock exchange closed tencents share price was down 469 to 5685 hong kong dollars while alibabas share price was down 391 to 221 hong kong dollars in premarket trading uslisted shares of tencent were down 28 and alibabas were slightly in the red if they do get added to the us blacklist then american investors wont be able to trade their stocks as on monday those who already own shares in the companies would have until november to unload them trump signed an executive order shortly after losing the 2020 presidential election to joe biden in november and it is already having consequences the new york stock exchange confirmed on wednesday that it plans to delist china mobile china telecom and china unicom on tuesday the trump administration moved to ban chinese payments apps including alipay and wechat pay which are linked to alibaba and tencent respectively in december the us added chinese drone company dji and semiconductor manufacturing international to a trade blacklist the commerce department said the action against smic stems from chinas militarycivil fusion doctrine and evidence of activities between smic and entities of concern in the chinese military industrial complex alibabas battles extend beyond the us and to its home turf where chinese regulators have recently launched an antitrust investigation against the company jack ma alibabas founder and ceo is keeping a low profile and hasnt been seen in public since october after he appeared to criticize chinese regulators tencent declined to comment and alibaba did not respond to cnbcs request for comment