U.S. STOCKS ON THE MOVE-Merck & Co, Sirius XM Holdings, Palantir Technologies

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U.S. stock index futures were slightly lower on Tuesday as investors stayed away from risky assets after China deployed retaliatory tariffs against the world's biggest economy.

** Illumina Inc ILMN.O:
BUZZ - Slides as China retaliates after US tariffs kick in nL4N3OV0Q1

** Merck & Co Inc MRK.N:
BUZZ - Earnings, revenue expected to rise in Q4 nL6N3OU0OX

** Sirius XM Holdings Inc SIRI.O:
BUZZ - Gains as Buffett's Berkshire buys more shares nL4N3OV0QN

** Super Micro Computer Inc SMCI.O:
BUZZ - To issue Q2 update next week; stock rises nL4N3OV0SM

** Palantir Technologies Inc PLTR.O:
BUZZ - Shares surge on strong forecasts; MS upgrades to 'equal-weight' nL4N3OV0RP

** Coinbase Global Inc COIN.O:

** Riot Platforms Inc RIOT.O:

** Marathon Digital Inc MARA.O:

** Bit Digital Inc BTBT.O:
BUZZ - Crypto stocks fall tracking bitcoin weakness nL4N3OV0U9