On Tuesday October 6 the S&P 500 rose 0.58% to 7,818.93, a record close, and the Nasdaq Composite added 0.45% to 27,599.79, its second record in a row. The Dow gained 253 points to 51,521.28, while the small-cap Russell 2000 fell 0.59%. Nvidia and AMD touched new highs. Constellation Energy rose about 13% after its nuclear power agreement with Google, Marvell gained about 8% on a higher revenue target, and Novavax fell about 9%. The 10-year Treasury yield eased to 5.27%.
Why it matters for listed companies
The advance was narrow: the report notes only about 25% of S&P 500 companies were trading above their 50-day average, and smaller companies fell on the day. Index gains are coming from AI chipmakers and from power producers that sell electricity to data centres, while a 10-year yield near 5.3% and a 30-year yield of 5.64% keep borrowing costs high for rate-sensitive groups such as small caps, property and utilities without AI contracts. Third-quarter earnings season starts next week.
Euro in US dollars 1.1269 → 1.1253-0.0016 06 Oct 2026 → 16 Oct 2026 · ECB reference rate
These figures are measured, not attributed. Prices and rates move for many reasons at once; they show
what happened after this story, not that the story caused it. Nothing here is a recommendation to buy, sell or hold.
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