Wall Street shook off last week's selloff and delivered a decisive vote of confidence in artificial intelligence on Wednesday, with the Nasdaq Composite surging 1.1 percent and the S&P 500 notching its third consecutive day of gains. The rally was powered by a surge in technology stocks, led by SpaceX's stronger-than-expected quarterly results and renewed optimism about the economics of AI infrastructure.

The benchmark S&P 500 rose 0.6 percent, while the blue-chip Dow Jones Industrial Average climbed 0.7 percent. It was the kind of broad-based tech rebound that investors had been waiting for after last week's brutal selloff—when fears about AI debt and overvaluation sent the S&P 500 to its worst weekly performance since June.

Wednesday's rally proved those fears were premature. SpaceX, the privately held aerospace and satellite company, reported quarterly earnings that exceeded analyst expectations, and the market responded with enthusiasm. Shares of SpaceX—which trade on secondary markets—soared, and the optimism spilled over into related tech names. Tesla rallied on speculation about a potential SpaceX merger, while semiconductor stocks jumped on strong demand for AI hardware.

AI Infrastructure Demand Remains Robust

The broader tech rally was fueled by a simple narrative: demand for AI infrastructure isn't slowing down. Cloud computing stocks, semiconductor manufacturers, and data center operators all posted solid gains, reflecting investor confidence that the AI buildout has years of runway ahead. SpaceX's results reinforced that view—its satellite internet business, Starlink, continues to expand, and the company's revenue growth signals that the infrastructure needed to power AI and connectivity is still scaling rapidly.

Nvidia, the chipmaker that has become synonymous with AI hardware, rose alongside other semiconductor stocks on expectations that AI model training and deployment will keep driving chip demand. The rally suggested that last week's selloff—which was driven by concerns about AI companies burning cash faster than they could generate revenue—was an overreaction. Investors are betting that the long-term economics of AI will eventually justify the massive capital expenditures that companies like SpaceX, Anthropic, and OpenAI are pouring into the space.

Anthropic IPO Speculation Adds Fuel

Adding to the optimism: reports that Anthropic, the AI safety-focused startup, is considering an initial public offering in the coming months. Anthropic's potential IPO would give investors another direct way to bet on the AI wave, and the prospect of a high-profile AI company going public helped lift sentiment across the sector. The company's recent IPO filing revealed massive losses—over $42 billion in cumulative deficits—but it also outlined a roadmap to eventual profitability that investors seem willing to give the benefit of the doubt.

Not every tech name participated in the rally. Netflix shares slipped after disappointing subscriber growth numbers, a reminder that even in a risk-on environment, fundamentals still matter. But the broader message from Wednesday's trading was clear: investors are ready to buy the dip in AI-related stocks, and they're betting that the infrastructure boom has further to run.

The S&P 500's three-day winning streak brings the index back near its pre-selloff levels, erasing much of the damage from last week's rout. Treasury yields eased slightly, with the 10-year note holding near 5.24 percent, still elevated but no longer climbing aggressively. That gave tech stocks—which are sensitive to interest rates—room to breathe and run higher.

What's Next for Tech Stocks

The rally sets up a critical test for the market in the coming weeks. Meta and Tesla are both set to report quarterly earnings in the days ahead, and those results will either validate Wednesday's optimism or expose it as premature. If those companies can show that AI investments are translating into revenue growth—or at least a credible path to profitability—the rally has room to extend. If they disappoint, the market could quickly reverse course.

For now, investors are betting that the AI infrastructure story is far from over. Wednesday's rally was a reminder that even after a brutal selloff, the appetite for tech and AI exposure remains strong. Wall Street wants to believe in the AI boom—and on October 21, 2026, it got the excuse it needed to buy back in.