CoreWeave institutional holders climb to 1,125 as total stake nears $40 billion
Big money now owns roughly three-quarters of the former Ethereum miner turned AI cloud provider, with Magnetar and Nvidia leading the pack
CoreWeave has picked up more institutional fans. The number of institutions holding the AI cloud provider’s stock rose to 1,125, lifting institutional ownership to 75.8% and pushing total institutional investment to $39.7 billion.
That is a lot of professional money parked in a company that, not long ago, was mining Ethereum. Wall Street now owns about three out of every four CoreWeave shares.
Who owns CoreWeave now
The figures come from 13F filings covering the quarter that ended June 30, 2026. A 13F is a quarterly disclosure that large US investment managers file to show which stocks they hold.
Those filings show institutions controlling somewhere between 72.5% and 75.8% of CoreWeave (NASDAQ: CRWV), depending on how the data is tallied. Some counts put the number of reporting institutions above 1,155. The headline figure for this round stands at 1,125 holders.
CoreWeave’s market capitalization recently sat between $45 billion and $50 billion. The stock has been trading between $80 and $90 a share.
Two holders stand well above the rest of the crowd:
Magnetar Financial LLC holds roughly 9.45% to 9.88% of shares, a position valued at approximately $5.2 billion.
Nvidia Corp holds roughly 8.57% to 8.96%, worth approximately $4.7 billion.
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Nvidia’s presence on that list is worth pausing on. The company that sells the GPUs CoreWeave rents out is also one of its largest shareholders.
From Atlantic Crypto to AI landlord
CoreWeave’s origin story is not the usual Silicon Valley script. The company was founded in 2017 as Atlantic Crypto, an Ethereum mining operation.
CoreWeave eventually pointed that hardware at a different problem. It pivoted to high-performance computing for artificial intelligence, renting GPU capacity to companies that need serious compute to train and run models.
CoreWeave debuted on March 28, 2025. For fiscal year 2025, it reported revenue of approximately $5.13 billion.
In October 2026, CoreWeave announced a partnership with AdaniConneX to build a 240 MW AI data center in Navi Mumbai, India. The facility is slated to begin initial operations in mid-2028.
What the institutional pile-in means
High institutional ownership cuts both ways. On one hand, it signals that large, research-heavy investors see CoreWeave as a credible way to own the AI infrastructure buildout without buying a trillion-dollar hyperscaler. Over 1,100 institutions do not usually crowd into a name by accident.
On the other hand, when roughly three-quarters of a stock sits with institutions, a shift in sentiment among a handful of large holders can move the share price quickly.
The Nvidia relationship deserves particular attention. Having your key supplier as a top shareholder can be a strategic advantage, potentially smoothing access to hardware in a market where GPUs are scarce. It also ties CoreWeave’s fortunes closely to a single vendor, and investors will want to watch any changes in that stake in future 13F filings.
The India data center is not expected to start operating until mid-2028, a long time in a sector where demand forecasts and chip generations change fast.
CoreWeave is one of the clearest examples of a mining-era company converting GPU infrastructure into an AI business that institutions are now willing to own at scale. Its trajectory, from Atlantic Crypto in 2017 to a $39.7 billion institutional stake, shows how hardware built for one boom can be repurposed for the next.