CoreWeave gains after Jane Street stake

Jane Street disclosed a 5.4% stake in CoreWeave, lifting shares as investors weigh long-term potential against near-term lock-up effects.

CoreWeave Stock Rallies as Jane Street Reveals a 5.4% Stake

CoreWeave shares rose more than 3% on the news that Jane Street disclosed a 5.4% stake in the AI cloud infrastructure company. The 13F filing shows Jane Street holding about 19.99 million shares, valued at roughly $2.35 billion at the time of the filing and near $1.8 billion at the prior close. Jane Street is now CoreWeave’s fourth-largest shareholder, behind Magnetar Financial, FMR and Nvidia.

The move comes after a volatile period for CoreWeave since its IPO in March. The stock peaked near $183 in June but cooled afterward, particularly after the IPO lock-up expired on August 14. That expiration freed up about 84% of the company’s shares for trading, and major banks handled more than $1 billion in block trades as early investors and insiders sold into the rally.

Jane Street’s stake reads as a vote of confidence from a major liquidity provider, signaling belief in CoreWeave’s long-term role in AI infrastructure while also creating a potential price overhang if the growth story doesn’t prove durable. The market’s reaction combines conviction about the business with caution over near-term liquidity and volatility.

Analysts have turned cautiously optimistic, with upgrades to Buy and price targets around the low to mid $180s, acknowledging recent declines but suggesting upside if the company can secure new clients and scale revenue. The real test will be whether execution matches the hype and translates into steady profits rather than episodic gains driven by investor positioning.

Highlights

The coming quarters will reveal whether CoreWeave can translate investor interest into durable growth.