Giants like Hikvision, China Telecom and China Mobile were added this year.
In November, the White House published an executive order, first reported by Reuters, that sought to give teeth to the list by barring U.S. investors from buying securities of the firms, from November 2021.
Top U.S. asset managers Vanguard Group and BlackRock Inc each own about 1% of shares of CNOOC's listed unit CNOOC Ltd, and together own roughly 4% of outstanding shares of SMIC, disclosures show.
Congress and the Trump administration have sought increasingly to curb the U.S. market access of Chinese companies that do not comply with rules faced by American rivals, even if that means antagonizing Wall Street.