Tech Giants Lead U.S. Stock Rally, Nasdaq Surges Over 20% Year-to-Date: AI Boom and Earnings Season Dual Analysis

Tech Giants Lead U.S. Stocks, Nasdaq Surges Over 20% Year-to-Date

Driven by the artificial intelligence boom and a robust earnings season, the U.S. tech sector continues to strengthen. Tech giants like Apple and Nvidia have repeatedly hit new highs, pushing the Nasdaq Composite Index's year-to-date gain past 20%, officially entering a technical bull market. Market analysts point to the accelerating commercialization of AI and better-than-expected profitability among top companies as the core logic behind this rally.

Weighted Stocks Hit New Highs: Apple and Nvidia Lead the Pack

As one of the highest-weighted components in the Nasdaq, Apple's stock has recently performed strongly. According to public market data, Apple's stock price has set multiple historical records in 2024, with its market cap briefly surpassing $3 trillion. Market consensus holds that Apple's moves in generative AI—including expectations of deep integration between its proprietary large language models and end-user devices—have been a key catalyst. Meanwhile, chip giant Nvidia, benefiting from surging demand for AI computing power, has seen particularly impressive year-to-date gains. Industry tracking data shows Nvidia's data center business revenue has posted triple-digit year-over-year growth for several consecutive quarters, making it one of the biggest beneficiaries of the current AI wave.

AI Boom: From Concept to Earnings Reality

Unlike the 2023 AI hype driven mainly by expectations, the 2024 market logic focuses more on earnings delivery. Several tech giants have reported substantial revenue growth from AI-related businesses in their latest earnings. For example, Microsoft's Azure cloud service has seen a significant increase in the share of revenue contributed by AI, while Alphabet, Google's parent company, emphasized in its earnings call that AI is driving incremental gains in its advertising and cloud businesses. This shift from "storytelling" to "delivering results" provides investors with a more solid foundation for tech valuations. According to market research, companies directly tied to AI in the S&P 500 posted average earnings growth of over 30% in the second quarter of 2024, far exceeding the index's overall level.

Earnings Season Support: Profit Growth Offsets Macro Concerns

Despite the Federal Reserve maintaining high interest rates and some market concerns about an economic slowdown, the strong earnings reports from tech giants have successfully shifted market focus. Apple, Nvidia, Meta, and others reported quarterly revenue and earnings per share that beat analyst expectations, with some companies raising their full-year guidance. This earnings resilience convinces investors that even under macroeconomic pressure, top tech companies can sustain growth through innovation and cost control. According to FactSet data, as of August 2024, over 80% of Nasdaq 100 components have reported earnings, with more than 75% beating expectations—the highest rate in three years.

Market Outlook: Can the Momentum Continue?

Opinions diverge on the Nasdaq's future trajectory. Optimists argue that the AI investment cycle is just beginning, with corporate capital spending on computing infrastructure likely to continue for at least 2-3 years, supporting the earnings of chip stocks like Nvidia and AMD, as well as related cloud service providers. Additionally, if consumer electronics giants like Apple and Tesla achieve breakthroughs in AI terminal applications, it could trigger a new upgrade cycle. However, skeptics point out that tech valuations are already at historical highs, with the Nasdaq's forward price-to-earnings ratio exceeding 30 times, above the five-year average. If AI commercialization falls short of expectations or the Fed delays rate cuts, the market could face a correction.

Overall, the pattern of tech giants leading U.S. stocks is unlikely to change in the near term. The synergy between the AI boom and strong earnings season provides powerful upward momentum for the Nasdaq. However, investors should remain vigilant about valuation bubble risks and the impact of macroeconomic data changes on market sentiment.