Magnetar Opportunity 2025-3 LP updates its Form D — $50M sold

Fund raise update · Hedge fund · Raising · EVANSTON, IL · Form D/A filed 2026-09-15 · all Magnetar Opportunity vehicles

3(c)(7) — qualified purchasers

Why now — by persona

Relevant to: Fund audit & tax, Fund administrator. Lead card pending.

n/a Magnetar Opportunity 2025-3 GP LLC	General Partner
Hayley Stein	Executive Officer
David Snyderman	Executive Officer
Ross Laser	Executive Officer
n/a Magnetar Financial LLC	Investment Manager

Signed by Hayley Stein, Chief Compliance Officer of the Investment Manager.

The issuer's phone number and address from the filing are shown to subscribers. See plans, or read it on EDGAR.

New fund · Venture capital · Raising · Offering $125M · Sold $25M · EVANSTON, IL · filed 2025-09-15

3(c)(7) — qualified purchasersFirst filing by this entity