Magnetar
Venture capitalActively deployingEvanston
Fund manager profile
Magnetar is a venture fund manager based in Evanston. SEC filings show 1 venture fund on record, most recently Magnetar Opportunity 2025-3 LP ($125M offering) filed September 2025.
Source: SEC EDGAR Form D filings. Firm website data not yet available.
What they invest in
from 5 of 5 portfolio companiesAdvanced Manufacturing Γ2AI & Machine Learning Γ2Enterprise Software Γ2Cloud Computing Γ1Data & Infrastructure Γ1Deep Tech Γ1Defense Tech Γ1Developer Tools Γ1
HQs:United StatesΓ4
Investments Β· 5 tracked
founders shown can be your intro path
Hydra provides analytics query execution for Postgres databases with separated compute resources, automatic scaling, and built-in caching, designed for time series and event data workloads across multiple deployment environments.
Data & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US
Joseph Sciarrino(Founder)in
Co-investorsY Combinator10x FoundersComcast VenturesEra FundsFlume VenturesFounders Fund+4 more
Hydra develops Brokkr, an operating system that enables independent data centers to operate AI Factories by providing shared infrastructure, customer access, and monetization tools on a unified network.
AI & Machine LearningCloud ComputingMiami, US
Aaron Ginn(CEO)inGarrett Johnson(Executive Officer, Director)inAriel Deschapell(Executive Officer)in
BoardSteve Jang(Director)
Co-investorsAccelerator VenturesComcast VenturesGraph VenturesKindred VenturesLaunchBay CapitalLoup Ventures+8 more
Torus Station is a full-stack energy storage platform that integrates hardware, software, security, and monitoring capabilities.
EnergyHardware
Nate Walkingshaw(Founder)inAnthony Woo(Founder)inGilbert Lee(Founder)in
Co-investorsEPIC VENTURESGreycroftMercato PartnersOrigin VenturesService Provider CapitalMagnetar AI Ventures
Torus is an AI system that analyzes engineering documents such as P&IDs, datasheets, and specifications to identify cross-document inconsistencies and automate engineering workflows.
Advanced ManufacturingAI & Machine LearningEnterprise SoftwareSaaSSan Francisco, US
Marcus Lima(Co-Founder & CEO)inRahul Thayil(Co-Founder & CTO)in
Co-investorsY CombinatorMagnetar AI Ventures
Turion Space builds space infrastructure spanning maneuverable spacecraft, mission planning software, and orbital logistics such as refueling and servicing, with capabilities for space domain awareness and rendezvous proximity operations.
Advanced ManufacturingDeep TechDefense TechSpace TechLos Angeles, US
Ryan Westerdahl(CEO & Co-Founder)inTyler James Pierce(Founder)inPatryk Wiatr(Founder)inRyan W(Founder)in
Co-investorsAngel Collective Opportunity FundAsymmetry VenturesAurelia FoundryBeyond Earth VenturesCenter15 CapitalDG Daiwa Ventures+17 more
Portfolio news
latest coverage across their companiesHydra Β· theaiinsider.tech Β· Jun 24, 2026
Hydra Host Β· x.com Β· Jun 24, 2026
Turion Space Β· spacewatch.global Β· Apr 17, 2026
Torus Β· techcompanynews.com Β· Sep 11, 2025
Torus Β· techcompanynews.com Β· Sep 11, 2025
Fund performance Β· per public LP disclosures Β· 3
as of Dec 2021| Fund | Vintage | Committed | Net IRR | TVPI | DPI |
|---|---|---|---|---|---|
| Magnetar ConstellationLPs: Kern County Employees' Retirement Association | 2018 | β | β | 1.11x | 0.52x |
| Magnetar Constellation Fund VLPs: Kern County Employees' Retirement Association | 2018 | β | 4.8% | 1.21x | 1.04x |
| Magnetar Constellation Fund IV LLCLPs: North Carolina Retirement Systems | 2013 | β | 5.6% | 1.28x | 1.24x |
Source: public limited-partner disclosures (CalPERS, CalSTRS). Net IRR / TVPI / DPI as reported by the limited partner; a fund's early-year IRR is an interim estimate (J-curve).
Frequently asked questions
- Where is Magnetar located?
- Magnetar is headquartered in Evanston, US.