I bought TWTR puts 30 minutes ago and i'm up 15%...   "The executive order prohibits all U.S. investors ( institutionaland retail investors alike) from purchasing or investing in securities of companies identified by the U.S. government as "Communist Chinese military companies." ^{[1] [2]} A "Communist Chinese military company" is any company that the U.S. Department of Defensehas identified pursuant to Section 1237 of the National Defense Authorization Actfor Fiscal Year 1999. The prohibition will become effective on January 11, 2021. ^[3] On December 28, 2020, guidance on the executive order was published clarifying that the order included subsidiaries of the relevant companies. ^{[4] [5]}