Earlier this week, Thinking Machines Lab, the AI startup founded by OpenAI's former chief technology officer Mira Murati, raised a whopping $2 billion in a seed funding round.

The investor profile is enviable and one wouldn't have expected less given Murati's reputation in her former role at OpenAI where she also briefly assumed the CEO role after the dramatic removal of Sam Altman.

Andreessen Horowitz is leading the round and it has a bunch of well known names who are participating in the round including NVIDIA, Accel and CISCO.

Another investor in the startup which previously wouldn't have attracted much attention despite its huge financial clout in the system is Jane Street.

The recall value of Jane Street's name has shot up in the past weeks after India's Securities and Exchange Board of India (SEBI) barred Jane Street Group entities from accessing the Indian securities market for allegedly manipulating trades. In the latest development Jane Street earlier this week deposited $567 million in an escrow account so that it can resume trading in the country. SEBI has said that it is examining the company's request to lift the restrictions.

SEBI's ban on Jane Street brought it to the spotlight albeit for the wrong reasons.

But in May, if one was told that Jane Street is one of the investors in AI startup Anthropic, a majority wouldn't have been aware of its antecedents. But not anymore.

Interestingly, Jane Street is not new to startup investing. It has invested in close to 30 startups most of which are engaged in the fintech, cryptocurrency, and AI space, based on our research and Tracxn data. Here's the list of the startups that Jane Street has bet on. And of course we do believe that Jane Street's name as an investor in a startup funding won't go unnoticed.

Jane Street was co-founded in New York City in 2000 by Tim Reynolds, Rob Granieri, Marc Gerstein and Michael Jenkins, with most of them having previously worked at an influential Philadelphia-based trading firm Susquehanna International Group.

Of the original four founders, as of 2025, only Rob Granieri remains actively involved at the firm's helm.

The company has over 3,000 staff in five offices across the US, Europe, and Asia. It trades in stocks of 45 countries and is also rapidly increasing its presence in Hong Kong by purchasing more office space.

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