As of July 17, 2026, Apple was valued at $4.90 trillion, closing the gap with Nvidia in the race for the title of world's most valuable company by market capitalization (Reuters). Market capitalization, or market cap, is simply the total value of all a company's shares combined — think of it as the price tag the stock market puts on the whole business. Nvidia held the top spot at roughly $4.7 trillion as of early July, according to data compiled by MacDailyNews on July 8 (MacDailyNews).

The gap has been shrinking. On July 3, Yahoo Finance reported Nvidia's market cap at about $4.7 trillion, roughly $190 billion, or about 4%, ahead of Apple's $4.5 trillion (Yahoo Finance). The same day, The Motley Fool noted Nvidia was approaching $5 trillion, with Apple about 4% behind (The Motley Fool). By June 24, CNBC reported Nvidia's market cap was close to $5 trillion (CNBC).

Nvidia's climb started in mid-2024. On May 28, 2024, Nvidia's market cap reached $2.8 trillion against Apple's $2.9 trillion (Reuters). Eight days later, on June 5, Nvidia closed at $3.012 trillion, edging past Apple's $3.003 trillion to become the second most valuable U.S. company (Reuters). That same day, Nvidia surpassed $3 trillion for the first time, leapfrogging Apple (Bloomberg). On June 18, 2024, Nvidia became the world's most valuable company at approximately $3.3 trillion, surpassing both Microsoft and Apple (Bloomberg). At that point, the combined market cap of Microsoft, Nvidia, and Apple totaled roughly $9.2 trillion, exceeding the entire value of China's stock market (Bloomberg). Nvidia overtook Apple again on October 25, 2024 (Reuters).

The $4 trillion threshold fell on July 10, 2025, when Nvidia closed at $4.004 trillion for the first time (Reuters). By January 21, 2025, the top three were bunched together: Nvidia at about $3.45 trillion, Apple at about $3.35 trillion, and Microsoft at about $3.2 trillion (CNBC).

The competitive picture has shifted in other ways. On January 8, 2026, Bloomberg reported that Alphabet — Google's parent company — had overtaken Apple to become the second most valuable company behind Nvidia, after Apple's stock dropped nearly 5% over a six-day slump ending around January 7, when Apple's market cap closed at $3.85 trillion (Bloomberg). Four days later, on January 12, Alphabet's market cap surpassed $4 trillion for the first time, with its stock closing at $331.86. As of that date, Nvidia, Microsoft, Apple, and Alphabet each held market caps above $4 trillion (CNBC).

By May 1, 2026, Nvidia's market cap had risen above $4.6 trillion but stayed under $4.9 trillion (CNBC). Nvidia's gross margin — the share of revenue left after covering the direct costs of making its products — peaked at around 79% (CNBC).

Apple's leadership adds a separate wrinkle. In April 2026, Apple announced that Tim Cook would become Apple Executive Chairman and John Ternus would become Apple CEO. The company's press release noted that under Cook's leadership, Apple's market cap grew from approximately $350 billion to $4 trillion, a more than 1,000% increase (Apple Newsroom).

The broader context here is that the gap between Nvidia and Apple has swung back and forth rather than moved in a straight line. Nvidia first overtook Apple in June 2024, reclaimed the top spot in October 2024 after Apple had briefly pulled ahead, and has held the position through multiple rounds of volatility in both stocks. The current narrowing, with Apple at $4.90 trillion as of July 17, puts Apple within striking distance if the trend of the past two weeks continues. Whether Apple actually reclaims the top spot depends on relative earnings momentum, buyback execution, and the direction of AI infrastructure spending that has driven Nvidia's gross margins to near-80% levels.

For investors and market participants, the practical takeaway is straightforward: at a roughly 4% gap as of early July, a single round of earnings reports or a shift in expectations about AI spending could flip the ranking. The deeper question is whether Apple's hardware-and-services ecosystem or Nvidia's data-center profit engine proves more durable at these valuations. Both companies are now valued at levels where small percentage moves translate into hundreds of billions of dollars in market cap, making the headline race as much about sentiment and positioning as about underlying business performance.