UnitedHealth rallies premarket while chip stocks retreat; TSMC's record earnings

UnitedHealth Group surged 7.6% after reporting adjusted EPS of $6.38, well above estimates, with revenue also beating forecasts amid strength across its healthcare businesses. TSMC posted record Q2 profit up 77% year-on-year with EPS of $4.31 vs $3.80 estimates, but shares fell ~4% on concerns over an expanded capex plan and near-term margin pressure, dragging chip stocks lower.

Why it matters: Nvidia slipped 1.3%, AMD fell 3.4%, and Intel and Micron dropped 1.9-2.7% as investors assessed higher industry investment spending, while psychedelic drug developers rallied on Eli Lilly's acquisition of AtaiBeckley.