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S&P 500 Rebounds as AMD, AI Stocks Stabilize After Valuation Jitters

by Daphne Dougn

Investors return to tech and AI trades following Tuesday’s sell-off, while upbeat payroll data and tariff hearings keep Wall Street cautious.

NEW YORK, November 05 (Market Insider) — U.S. stocks bounced back Wednesday after a sharp tech-led selloff, with AI-linked shares showing tentative signs of recovery. The S&P 500 rose 0.3%, the Nasdaq Composite gained 0.5%, and the Dow Jones Industrial Average added 82 points, or 0.2%, as investors reassessed valuations across the red-hot artificial intelligence sector.

The rebound was led by Advanced Micro Devices (AMD), which eased just 1% after posting better-than-expected third-quarter earnings and revenue, though its margin outlook merely met analyst forecasts. The chipmaker trades at roughly 41 times forward earnings — rich compared to the S&P 500’s 23 multiple, but far below the sky-high valuations of pure-play AI software names.

The move comes after Tuesday’s rout, when Palantir Technologies (PLTR) plunged 8% amid growing fears that AI-driven stocks have become dangerously overvalued. Palantir, which trades at more than 200 times forward earnings, extended losses another 2% on Wednesday, even as long-term investors defended the company’s role in government and enterprise AI infrastructure.

Elsewhere, Super Micro Computer (SMCI) fell 3% following weaker-than-expected fiscal Q1 results, while Arista Networks (ANET) dropped 6% after reporting modest growth in cloud infrastructure sales — signaling that the AI euphoria may be cooling, at least temporarily.

Still, analysts say the broader AI trade remains intact. “I don’t think today is concerning,” said Liz Young Thomas, head of investment strategy at SoFi, on CNBC’s Closing Bell. “This run has gone far and fast, so some cooling makes sense. But the large-cap tech story isn’t over — the chase is still on through year-end.”

Economic Data Adds Support

On the macro front, private payroll data from ADP showed that U.S. companies added 42,000 jobs in October, nearly double the 22,000 expected, signaling resilience in the labor market despite slowing consumer sentiment. September’s data had shown a contraction of 29,000, amplifying relief that job growth may be stabilizing.

Investors are also watching the U.S. Supreme Court’s hearing on former President Donald Trump’s tariffs, which will determine whether his administration had the legal authority to impose duties under the International Emergency Economic Powers Act (IEEPA). Treasury Secretary Scott Bessent told reporters the administration retains “lots of other authorities” should the court rule against it.

Market Outlook: AI Still the Driver

Despite near-term volatility, strategists say AI infrastructure spending and semiconductor demand remain the structural growth engines behind the market’s rally. The short-term pullback, they note, may even reset valuations for another leg higher into 2026.

“The love affair with large-cap tech isn’t ending — it’s just catching its breath,” Thomas added. “Investors are still chasing the same story: AI is the new industrial revolution, and Wall Street isn’t done pricing that in.”

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