Updated 10 Nov 2026: headline clarified after Nvidia regained the lead at 12:22 p.m. ET.
Update (10 Nov 2026, 12:22 p.m. ET): Nvidia was back ahead. Nasdaq showed Microsoft at $540.625 and Nvidia at $167.695, putting Nvidia about $27 billion ahead, more than the rounding of its share count, by our arithmetic. The ranking is intraday and can change again before the close.
Microsoft was worth about $13 billion more than Nvidia at 12:09 p.m. Eastern on 10 November, by our arithmetic from Nasdaq quotes and SEC filing share counts. At the 6 October close, Nvidia’s highest of 2026, Nvidia led Microsoft by about $1.84 trillion. By 12:09 p.m. ET, 25 sessions later, that gap had closed and reversed; Nvidia was back ahead by 12:22 p.m.
Reuters reported the crossover at 17:05 UTC under the headline “Microsoft tops Nvidia’s market cap for first time since June 2025”. Apple stays first, at about $5.06 trillion. These are intraday figures; the close may differ.
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The key insight: At 12:09 p.m. Eastern on 10 November, Microsoft was worth about $13 billion more than Nvidia, by our arithmetic from Nasdaq quotes and SEC filing share counts. At the 6 October close Nvidia had led by about $1.84 trillion, so as of 12:09 p.m. ET the gap had closed and reversed in 25 sessions. Nvidia was back ahead by 12:22 p.m.
Nasdaq showed Apple at $348.15, Microsoft at $542.60 and Nvidia at $166.65, down 6.73% on the day. Multiplying each price by the share count on the company’s latest SEC filing cover gives Apple $5.059 trillion, Microsoft $4.029 trillion and Nvidia $4.016 trillion, by our arithmetic.
Nvidia’s count comes from its August 10-Q cover, which states 24.1 billion shares, rounded to a tenth of a billion. At $166.65, a twentieth of a billion shares is worth about $8 billion, less than the $13 billion gap. Microsoft’s count is 7,426,194,552 from its October 10-Q; Apple’s is 14,532,182,000 from its 10-K filed 3 November.
Market value at 12:09 p.m. ET on 10 November 2026 (intraday; the close may differ): Nasdaq last-sale prices times each company’s latest SEC filing cover share count, our arithmetic. Nvidia’s cover count is rounded to 0.1 billion shares.
From a $1.84 Trillion Lead to Third Place, at 12:09 p.m.
Nvidia’s highest close of 2026 was $239.24 on 6 October, per Nasdaq. At 24.1 billion shares that is $5.766 trillion, against $3.930 trillion for Microsoft at its $529.30 close that day, by our arithmetic. At 12:09 p.m. on 10 November, Nvidia’s value was about $1.75 trillion below its 6 October level and its share price 30.3% lower.
The “first time since June 2025” framing is Reuters’. Its story says Microsoft “overtook Nvidia as the world’s second-most valuable company on Tuesday” and gives Microsoft at $543.25 and Nvidia at around $167.11, without market-value figures. We checked it on closing prices, using Nasdaq closes and the share count on each company’s filing cover at the time. Microsoft’s value was above Nvidia’s at every close from 11 to 24 June 2025, and Nvidia’s was above Microsoft’s at every close from 25 June 2025 through 9 November 2026, by our arithmetic.
The Structural Read
As we read the two series, almost all of the change came from one side: Microsoft’s value rose about $99 billion from its 6 October close to 12:09 p.m. on 10 November, while Nvidia’s fell about $1.75 trillion, by our arithmetic. These are intraday figures and say nothing about where the session ends.
NVIDIA Form 10-Q, quarter ended July 26, 2026 (cover page)
“The number of shares of common stock, $0.001 par value, outstanding as of August 21, 2026, was 24.1 billion”
Three Implications
FOR NVIDIA HOLDERS At 12:09 p.m. the stock was $166.65, 6.73% lower on the day and 30.3% below its $239.24 close on 6 October, per Nasdaq and our arithmetic.
FOR MICROSOFT HOLDERSMicrosoft was down 0.47% on the day at $542.60; it moved ahead because Nvidia fell faster, by our arithmetic.
FOR READING THE NUMBERS Every value here is price times shares outstanding on the latest filing cover; Nvidia’s count is rounded to 0.1 billion shares, worth about $8 billion at today’s price.
The framework reads: “Read a row to see who owns a single layer โ the networking row, for instance, reveals NVIDIAโs monopoly and the fact that everyone else in the AI economy is paying rent on it.” It adds: “The diagonals where dominance concentrates are where the supercycleโs profit pools live.”
As we read it, the 12:09 p.m. ranking put a company that collects that rent below one of the companies paying it, on market value, if only briefly. The framework predates these sessions and does not discuss today’s prices.
What Is Not Established
These are 12:09 p.m. intraday figures; the ranking can change before the 4 p.m. close. It was already close: at 12:14 p.m., Nasdaq showed Microsoft at $543.025 and Nvidia at $167.41, putting Nvidia about $2 billion ahead again, inside the rounding of its share count, by our arithmetic. Share counts date from each company’s latest cover page and do not reflect buybacks or issuance since. Index providers and data vendors may use different share counts, so their market values can differ from ours.
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At 12:09 p.m. Eastern on 10 November, Microsoft was worth about $13 billion more than Nvidia, by our arithmetic, after Nvidia’s $1.84 trillion lead on 6 October had closed and reversed in 25 sessions, before Nvidia regained the lead by 12:22 p.m.; Apple remained first at about $5.06 trillion.
A note on sourcing. Prices are Nasdaq last-sale quotes at 12:09 p.m. ET and Nasdaq historical closes; share counts are from each company’s latest SEC filing cover page; the crossover headline is Reuters’. Market values, gaps and session counts are our arithmetic. Intraday figures; the close may differ.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
