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Nvidia and other semiconductor names came under renewed pressure as AI fears swelled, with reported details on Anthropic's finances adding to the worry. CoreWeave's polarising stock rebounded as Wall Street remained sharply divided on AI spending.
Why it matters CoreWeave and chipmakers are the market's most direct bet on AI infrastructure demand, so their swings read as a verdict on the trade.
Rocket Lab pushed the debut launch of its Neutron medium-lift rocket out of this year, and the stock fell in trading.
Why it matters Neutron is Rocket Lab's attempt to compete in the medium-lift market dominated by SpaceX's Falcon 9, so the schedule slip matters for its growth story.
Earlier on this storySpaceX flies 35th cargo run to ISS with final solar arrays
The health insurer said its medical-cost ratio was 88.4% in the third quarter and raised its guidance once more, sending the stock higher in premarket trading.
Why it matters Medical-cost trends at the largest US insurer are a bellwether for the whole managed-care sector and for pricing in 2027.
The S&P 500 has gained almost 120% since its closing low on October 12, 2022, but investors say reaching a fifth birthday will be tougher, and strategists argue bull markets do not simply expire with age.
Why it matters Valuation and longevity worries are a live part of positioning debates, even if history offers little support for calling the top on time alone.