Stock Market Today, Oct. 26: AI Optimism Lifts Nasdaq as Tech Stocks Rebound

The Nasdaq rose 0.82% on October 26, 2026, as AI optimism built after Anthropic's IPO filing, pulling tech back into favor. The S&P 500 added 0.70% and the Dow edged up 0.28%, with investors leaning toward tech and real estate stocks.

Single-name moves split sharply. Tesla (TSLA) surged 5% on a Barclays upgrade, the session's clearest stock-specific catalyst. Meta (META) went the other way, falling 2% after announcing a $95 billion AI infrastructure investment plan.

The META reaction is worth parsing. Interpretation, not reported fact: the market appears to be rewarding AI enthusiasm at the index level while penalizing the scale of spending required to participate, at least for one company on one day. The Nasdaq's 0.82% gain and META's 2% drop happened in the same session, so the optimism was not uniform across names.

The Anthropic IPO filing served as the headline sentiment driver. The Nasdaq's outperformance against the Dow's 0.28% gain suggests the tape was tech-led rather than a broad-based rally.