US stock futures traded mixed this morning. Here are some big stocks that posted losses in today’s premarket trading session.

• Esperion Therapeutics, Inc. ESPR Shares fell 30.7% to $4.38 in premarket trading after the company announced full results from its landmark cholesterol-lowering bempedoic acid, a CLEAR (ACL-Inhibiting Regimen) outcomes study presented at the annual scientific meeting of the American College of Cardiology & Expo along with the World Congress of Cardiology and published concurrently in the New England Journal of Medicine.
• Diversified Healthcare Trust DHC Plunged 5.5% to $1.56 in premarket trading after gaining over 11% on Friday. Diversified Healthcare recently reported better-than-expected fourth-quarter sales results.
• Novavax, Inc. NVAX Shares fell 4.2% to $7.37 in premarket trading after rising 11% on Friday. Novavax recently reported worse-than-expected Q4 results and said there are significant doubts about its ability to continue as a company.

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• HUYA Inc. HUJA Shares fell 4.1% to $4.7 in premarket trading. On the evening of March 4, 2023, HUYA held the annual “HUYA Boom Night” gala at Cotai Arena, Venetian Macao in Macao, South China.
• Rio Tinto Group RIO Shares fell 3.6% in premarket trading to $72.48. Rio Tinto recently cut its dividend due to weak demand for iron ore, aluminum and copper from a lockdown-hit China after posting lackluster FY22 results.
• signature bank SBNY Shares fell 3.3% in premarket trading to $110.01. Signature Bank recently named COO Eric R. Howell to succeed Joseph DePaolo as President.
• Sibanye Stillwater Limited SBSW Down 3.2% to $8.19 in premarket trading after gaining 4% on Friday. Sibanye Stillwater recently saw a drop in FY earnings.

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