S&P 500, Nasdaq, Dow Begin Week Higher As Anthropic IPO Filing Rekindles AI Enthusiasm — MSFT, AAPL, CART, VZ In Focus

U.S. equity indices opened the week higher, with the S&P 500, Nasdaq, and Dow all advancing, as an Anthropic IPO filing revived enthusiasm for artificial intelligence. The move is best read as a risk-appetite channel: a prospective public listing of a leading AI developer raises the valuation benchmark for private AI companies and tends to lift expectations for AI-linked revenue across the broader technology complex. Mega-cap technology names with large AI exposure, including Microsoft and Apple, along with the Nasdaq 100 as a concentrated index, are most sensitive to shifts in this sentiment because their earnings multiples rely heavily on long-duration growth expectations. Traders should watch whether the rally holds as Treasury yields respond to the week's economic data, since a rise in real rates would compress the valuation premium that AI-driven growth stocks currently command.

The Nasdaq-100 (NDX) is the US large-cap tech benchmark. NDX is more sensitive to rate decisions than SPX because of longer-duration cash flows, and heavily concentrated in Tech/Comms names — mega-cap earnings season dominates price action.

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