
Magnetar Capital is a multi-strategy alternative asset management firm founded in 2005 and headquartered in Evanston, Illinois. Its Ventures arm partners with early- to growth-stage companies, with a particular focus on AI and industry-transforming technologies.
41% of their portfolio is in AI. Average disclosed round size is $612.7M (across 17 rounds with reported amounts).
Portfolio
14
Fund Size
$235M
Top Stage
Series B
Last 12 Mo
3
Team
Devin Dallaire
Head of Products, Quantitative Investing, Partner
Ross Laser
Co-Founder and President
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
22 investments
| Company | Round | Amount | Date |
|---|---|---|---|
| Series A | $100M | Jul 2026 | |
| Series B | $350M | Jun 2026 | |
| Unknown | — | Feb 2026 | |
| Growth | $2B | Jan 2026 | |
| Growth | — | Sep 2025 | |
| PProcap | Unknown | $750M | Jun 2025 |
| EEndera Corp. | Unknown | — | Feb 2025 |
| Growth | $1.1B | May 2024 | |
| Series C | $1.1B | May 2024 | |
| Growth | $2.3B | Aug 2023 | |
| Series B | $221M | Apr 2023 | |
| Series C | $100M | Dec 2022 | |
| Series C | $215M | Jan 2022 | |
| Series B | $50M | Nov 2021 | |
| Series B | $45M | Sep 2021 | |
| Series C | $40.6M | Jan 2021 | |
| Series A | $112M | Jul 2020 | |
| Series C | $112M | Jan 2020 | |
| Series B | — | — | |
| Unknown | $1.7B | — | |
| Series B | — | — | |
| Series D | $120M | — |
Top Co-Investors
Coatue Management LLC5 shared
Altimeter Capital Management, LP5 shared
Fidelity Investments5 shared
Lykos Global Management4 shared
FOG Ventures3 shared
NVentures3 shared
Citi Ventures3 shared
The Carlyle Group3 shared
The Goldman Sachs Group, Inc.2 shared
JPMorgan Chase & Co.2 shared
Jane Street Capital2 shared
Wells Fargo2 shared
Barclays2 shared
Y Combinator2 shared
The Invus Group, LLC2 shared
PICO Venture Partners1 shared
Blackstone Inc.1 shared
Last updated: 20 October 2026