Short sellers held 74,211,562 CoreWeave shares at the 30 October settlement, up 35% from 54,939,326 on 15 September, according to Nasdaq’s short-interest data. That is about 16.2% of the 458.9 million Class A shares the company last reported outstanding, by our arithmetic.
On 10 November CoreWeave raised its 2026 revenue guidance to $13.0 billion to $13.3 billion. At 5:33 a.m. New York time on 11 November, Nasdaq showed the stock at $54.85 in premarket trading, up $6.12 or 12.56% from Tuesday’s $48.73 close. On the 30 October position, that move is a paper loss of about $454 million for the shorts, by our arithmetic.
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The key insight: Nasdaq data show 74,211,562 CoreWeave shares sold short at the 30 October settlement, up 35% from mid-September and about 16.2% of the Class A shares last reported outstanding, by our arithmetic. CoreWeave then raised its 2026 revenue guidance, and the premarket price is back near the 30 October close.
Nasdaq’s table shows short interest rising at every settlement since mid-September: 59,952,639 shares on 30 September, 69,779,354 on 15 October and 74,211,562 on 30 October. A year earlier, on 14 November 2025, it was 32,948,281 shares, so the position has more than doubled (2.25 times), by our arithmetic.
Over the same stretch the stock went the other way. CoreWeave closed at $105.26 on 14 August and $54.87 on 30 October, a 48% fall, while short interest rose 26% from 58,859,603 shares, by our arithmetic from Nasdaq’s closes and table.
CoreWeave short interest and share price on each Nasdaq settlement date from 14 August to 30 October 2026, indexed to 100 on 14 August. Short interest rose to 74,211,562 shares from 58,859,603 while the close fell to $54.87 from $105.26. Source: Nasdaq.com short-interest table and daily closes, read 11 November 2026. Indexing and percentage changes are our arithmetic.
What the Position Was Worth
At the 30 October close of $54.87, the 74.2 million shorted shares were worth about $4.07 billion. By Tuesday’s $48.73 close that had fallen to about $3.62 billion, a paper gain of roughly $456 million for the shorts if the position was unchanged, by our arithmetic.
The premarket price of $54.85 puts the stock back near its 30 October close, so the gain since that settlement is roughly erased on paper. Nasdaq lists days to cover at 1.07, against average daily volume of 69,151,300 shares in the period; 90,252,210 shares traded on 10 November.
What CoreWeave Changed on 10 November
CoreWeave’s third-quarter release said: “We are raising our full year 2026 revenue guidance to a range of $13.0 billion to $13.3 billion”. It also raised its adjusted operating income guide and its exit annualized run-rate revenue guide to $20 billion to $21 billion. The quarter’s net loss was $709 million.
The release lists an “inaugural at-the-market equity program for up to 35 million shares of Class A common stock”, equal to about 47% of the 30 October short position, by our arithmetic. Our results piece covers the quarter and our capital-plan piece the funding plan; in October we tracked neocloud short gains from a different data set.
The Structural Read
As we read it, the short position grew into the results on a view about financing and the stock, and the outlook raise tested that view on the first morning. What the shorts did after 30 October is not established until Nasdaq publishes the next settlement.
CoreWeave third-quarter 2026 earnings release, filed with the SEC, 10 Nov 2026
“We are raising our full year 2026 revenue guidance to a range of $13.0 billion to $13.3 billion”
Three Implications
FOR THE SHORTS At the 30 October close the 74.2 million shorted shares were worth about $4.07 billion; at the 10 November close about $3.62 billion, by our arithmetic.
FOR THE FLOAT The 30 October short interest equals about 16.2% of the 458.9 million Class A shares on the 10-Q cover, by our arithmetic.
FOR SUPPLY The release lists an at-the-market program for up to 35 million Class A shares, about 47% of the 30 October short position, by our arithmetic.
The framework says: “the capex race is no longer a corporate spending cycle. It is a sovereign-scale financing problem dressed in tech-company clothing.”
As we read it, a short position of this size is one way the market prices that financing problem at a single operator. The framework predates the data here and does not discuss CoreWeave’s short interest.
Value of the 74,211,562 CoreWeave shares short at the 30 October settlement, priced at the 30 October close ($54.87), the 11 November premarket quote and the 10 November close ($48.73), assuming an unchanged position. Source: Nasdaq.com data read 11 November 2026; values are our arithmetic.
What Is Not Established
Short interest is reported twice a month with a lag, so the figures here describe positions on 30 October, not on 11 November. The paper gains and losses assume an unchanged position and are our arithmetic, not reported trading results. The Class A share count is as of 31 July, from the latest quarterly report we read. Premarket prices are thin and can move before the 9:30 a.m. open. This is not investment advice.
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Short sellers held 74.2 million CoreWeave shares on 30 October, 35% more than in mid-September and about 16.2% of the Class A shares last reported outstanding. CoreWeave then raised its 2026 revenue guide, and the premarket price of $54.85 is back near the 30 October close.
A note on sourcing. Short interest, closing prices and the premarket quote are Nasdaq.com data we read on 11 November 2026; the share count is from CoreWeave’s 10-Q cover and the guidance from its third-quarter release filed with the SEC. Percentages, position values and paper gains or losses are our arithmetic and assume an unchanged short position. This is not investment advice.
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.
