Stock Market Today: Nasdaq Leads Wall Street Rally

NEW YORK, NY – On October 21, 2026, U.S. stock markets experienced a notable upswing, largely driven by robust corporate earnings reports and renewed optimism surrounding investments in artificial intelligence. The technology sector was at the forefront of this rally, although declines in telecommunications and streaming stocks somewhat tempered the overall market momentum.

The Nasdaq Composite surged by 1.05%, outperforming both the Dow Jones Industrial Average and the S&P 500. The Dow increased by over 360 points, while the S&P 500 inched closer to its all-time high reached earlier in the month.

Investor sentiment was buoyed by SpaceX's strong financial performance for the third quarter and Super Micro Computer's improved outlook for its business. These developments alleviated some apprehensions regarding the significant investments companies have been making in artificial intelligence infrastructure.

Despite the overall positive market trends, the performance was uneven. Shares of Netflix, AT&T, and other telecom firms saw substantial declines, indicating that investors are still differentiating between companies with promising growth prospects and those facing uncertainty about their future earnings.

The Nasdaq's strong performance was indicative of heightened demand for stocks associated with artificial intelligence, semiconductor production, and computing infrastructure. The S&P 500's gains brought it within approximately 0.8% of its previous record, reflecting ongoing investor interest in equities despite rising borrowing costs and potential uncertainties surrounding corporate profitability.

The Russell 2000 index, which tracks smaller publicly traded companies, rose by 0.27%, suggesting that the day's most significant buying activity was concentrated among larger firms.

SpaceX emerged as a key player in the market after announcing third-quarter results that exceeded expectations. The aerospace and satellite communications company saw its shares jump nearly 7.8%. SpaceX, which went public in June 2026 under the ticker SPCX, reported a third-quarter revenue of $14.6 billion, marking a staggering 161% increase from $5.6 billion in the same quarter of 2025.

The company's net income for the quarter was $4.4 billion, a remarkable turnaround from a net loss of $1.1 billion the previous year. SpaceX's operating income was reported at $2.8 billion, while adjusted earnings before interest, taxes, depreciation, and amortization (EBITDA) reached $8.8 billion. This marked the first profitable quarter for SpaceX since its public debut.

SpaceX attributed its revenue growth to its Super Intelligence segment and the expansion of its Connectivity services. The company reported ongoing enhancements in its artificial intelligence computing capacity, including infrastructure for cloud services and advanced computing systems. The Connectivity division also benefited from a growing demand for satellite communication services across various sectors, including enterprise, government, and consumer markets.

Investors were particularly attentive to SpaceX's results, as there have been rising concerns about whether significant investments in artificial intelligence would yield adequate financial returns. The company's earnings provided a positive example of substantial revenue growth and improving profitability in a capital-intensive technology sector.

In addition to its financial results, SpaceX attracted investor attention due to CEO Elon Musk's remarks about a potential merger with Tesla. Musk suggested that combining the two companies could be advantageous, sparking speculation about possible strategic benefits. Tesla's stock rose approximately 3.4% during the day. However, no formal merger agreement was disclosed, and Musk's comments should not be taken as confirmation of any impending transaction, as any merger would involve considerations of corporate valuations, shareholder interests, and regulatory hurdles.

Another significant player on the day was Super Micro Computer, whose shares increased by about 9.6%. The company, based in San Jose, California, specializes in servers and computing infrastructure for artificial intelligence applications and cloud computing. On October 20, Super Micro provided a preliminary business update for its first fiscal quarter of 2027, estimating quarterly revenues between $18.5 billion and $19.5 billion, significantly surpassing its earlier forecast of $14.5 billion to $15.5 billion. This revised estimate was approximately $4 billion higher than before.

Super Micro also raised its gross margin projection to a range of 12% to 12.5%, up from 10.4% to 10.8%, attributing the optimism to increased demand for artificial intelligence platforms. However, the company cautioned that these figures were preliminary and unaudited, indicating that actual results may vary as final financial assessments are completed.