Jane Street is a quantitative trading firm and liquidity provider with a unique focus on technology and collaborative problem solving. Founded in 1999 and headquartered in New York City, the firm trades across more than twenty countries in asset classes including ETFs, equities, options, bonds, and commodities.
Deal activity increased 250% year-over-year (7 deals in the last 12 months). Average disclosed round size is $601.6M (across 22 rounds with reported amounts).
Portfolio
26
Fund Size
—
Top Stage
Seed
Last 12 Mo
7
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
29 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 MatX | Series C | — | Feb 2026 |
 Oxide Computer | Series C | $200M | Feb 2026 |
| NNscale Limited | Series C | $2B | Jan 2026 |
 Antithesis | Series A | $105M | Dec 2025 |
 X-energy | Series D | $700M | Nov 2025 |
| CChuangxin Industries | Ipo | $707M | Nov 2025 |
 EdgeCortix | Series B | — | Nov 2025 |
 Thinking Machines Lab | Seed | $2B | Jul 2025 |
 Anthropic | Series E | $3.5B | Mar 2025 |
| X-energy | Series C | — | Feb 2025 |
 Coreweave | Series C | $1.1B | May 2024 |
| Coreweave | Unknown | — | Dec 2023 |
 Membrane Labs | Series A | $20M | Oct 2023 |
| MMembrane Labs, Inc. | Series A | $20M | Oct 2023 |
| Coreweave | Growth | $2.3B | Aug 2023 |
 ZetaChain | Series A | $27M | Aug 2023 |
| MMultiLynq | Unknown | — | Mar 2023 |
 Kaito | Seed | $5.3M | Feb 2023 |
 Cera Care | Growth | — | Aug 2022 |
 Cera | Growth | $320M | Aug 2022 |
 Vertex Protocol | Seed | $8.5M | Apr 2022 |
 1inch | Series B | $175M | Dec 2021 |
 SHUKUN | Unknown | — | Jan 2021 |
 Kinside | Seed | $3M | Dec 2019 |
 Squad | Seed | $5M | Aug 2019 |
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Top Co-Investors
Fidelity Investments4 shared
Precursor Ventures2 shared
NVentures2 shared
Cisco Investments2 shared
Investment Management Corporation of Ontario2 shared
Coatue Management LLC2 shared
Altimeter Capital Management, LP2 shared
Lykos Global Management2 shared
Magnetar Capital2 shared
Spark Capital2 shared
Oltre Impact2 shared
Schroders Capital2 shared
Guinness Ventures2 shared
Yabeo2 shared
Squarepoint Capital2 shared
8090 Partners2 shared
Amber Group2 shared
Segra Capital Management2 shared
Emerson Collective2 shared
Ares Management Corporation2 shared
Last updated: 8 September 2026