U.S. stock index futures tumbled on Monday as investors shied away from risky assets amid mounting concerns that the Trump administration's upcoming announcement of extensive tariff plans could hurt the global economy. .N

** Newsmax Inc <NMAX.N>:BUZZ - Set for NYSE debut after $75 mln mini-IPO nL6N3QE0D1

** Nvidia Corp <NVDA.O>:

** Advanced Micro Devices Inc <AMD.O>:

** Broadcom Inc <AVGO.O>:

** Marvell Technology Inc <MRVL.O>:BUZZ - AI, chip stocks decline amid selloff after Trump tariffs comments nL3N3QE0HV

** Taysha Gene Therapies Inc <TSHA.O>:

** Solid Biosciences Inc <SLDB.O>:

** CRISPR Therapeutics AG <CRSP.O>:BUZZ - Gene therapy makers slide on reports that FDA official Peter Marks resigns nL3N3QE0HZ

** Bluebird Bio Inc <BLUE.O>:BUZZ - Rises on non-binding bid for up to $110.5 million nL6N3QE0DU

** Newmont Corp <NEM.N>:

** Barrick Gold Corp <GOLD.N>:

** AngloGold Ashanti PLC <AU.N>:

** Harmony Gold Mining Company Ltd <HMY.N>:BUZZ - Gold miners rise on potential inflation worries nL3N3QE0IR

** United States Steel Corp <X.N>:BUZZ - Falls after BMO lowers rating on valuation nL3N3QE0J0

** Steel Dynamics Inc <STLD.O>:BUZZ - BMO upgrades Steel Dynamics on potential tariffs lift nL3N3QE0J1

** Innovative Industrial Properties Inc <IIPR.N>:BUZZ - Falls after tenants default on rent nL3N3QE0JB

** CoreWeave Inc <CRWV.O>:BUZZ - Drops after Friday's flat finish nL6N3QE0F8

** Sarepta Therapeutics Inc <SRPT.O>:BUZZ - Falls after reports of FDA official resigning nL6N3QE0EN

** Virax Biolabs Group Ltd <VRAX.O>:BUZZ - H.C. Wainwright starts coverage on Virax Biolabs with 'buy' rating nL3N3QE0K9

** Moderna Inc <MRNA.O>:BUZZ - Falls on reports FDA official Peter Marks resigns nL3N3QE0ME

** Tesla Inc <TSLA.O>:

** Meta Platforms Inc <META.O>:

** Amazon.com Inc <AMZN.O>:

** Apple Inc <AAPL.O>:BUZZ - Mag 7 stocks slip as Trump's sweeping tariff plans spark sell-off nL3N3QE0MP

(Compiled by Rajarshi Roy and Aatrayee Dasgupta in Bengaluru)

((Rajarshi.Roy@thomsonreuters.com))