Jane Street is expanding its investment in CoreWeave by buying an additional $1 billion of stock, in addition to a $6 billion infusion to use the self-described hyperscaler’s cloud platform.
The New York City-based trading firm picked up CoreWeave for $109 a share, according to a Wednesday statement, and will also get access to the latest fleet of Nvidia chips, the Vera Rubin, expected to roll out later this year.
“Access to CoreWeave’s leading AI cloud platform enables our researchers to move at the pace our competitive business demands,” a Jane Street representative said in the press release. Representatives for Jane Street did not immediately respond to Inc.’s request for further comment.
Shares of CoreWeave remained flat on Wednesday, trading around $117 per share, as of late morning.
Today’s announcement tacks on yet another deal for CoreWeave who, five days ago, announced a new partnership with Anthropic to help deploy Claude models. The day before that, CoreWeave unveiled an expanded $21 billion partnership with Meta, one of its largest customers.
It’s a testament to how CoreWeave is making an active effort decrease customer concentration. (Its largest customer, Microsoft, comprised 67 percent of its total revenue in 2025, according to CoreWeave’s latest annual report.)
Max Hjelm, CoreWeave’s senior vice president of revenue, said in a press statement that “Jane Street operates like a frontier lab.” (And frontier labs are expected to be some of the major drivers of AI usage in the years to come.)
Jane Street isn’t just a trading firm, but a high-frequency trading firm–or those that use powerful technologies and algorithms to make rapid trading decisions in order to turn profits off of timing differences. In finance, that’s known as arbitrage and, in Jane Street’s case, such decisions can come down to mere milliseconds. Time is money, after all.
