Magnetar Constellation Fund, Ltd
Magnetar Constellation Fund, Ltd is a hedge fund based in Grand Cayman, Cayman Islands. According to its most recent Form D, filed Dec 15, 2025, the fund has sold $8,595,604,910 of interests to 199 investors since its first sale in Mar 2007. The filing does not set a minimum investment. It relies on the Section 3(c)(7) exclusion, so investors generally must be qualified purchasers. The offering uses Rule 506(b), which does not permit general solicitation. Related persons named in the filing include Magnetar Financial LLC; Hayley Stein; Leanne Golding.
Performance
No verified returns have been reported for this fund. As a rough guide, Magnetar Financial LLC, which manages it, disclosed U.S. stock holdings that returned an estimated +20.4% 2026 YTD through Jun 30 (S&P 500: +9.5%), based only on its public 13F filings. Over a longer period, Q3 2024 to Q2 2026, the estimate is +86.6% (S&P 500: +37.2%).
This estimate covers the firm's whole disclosed long U.S. stock portfolio. It is not this fund's return and excludes dividends, fees, shorts, derivatives, bonds, cash and trading within each quarter.
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- Total raised
- $8,595,604,910Cumulative sales reported on Form D
- Investors
- 199
- First sale
- Mar 1, 2007
- Minimum investment
- None set
- Who can invest
- Qualified purchasersSection 3(c)(7): generally $5M+ in investments
- Offering exemption
- Rule 506(b)No general advertising
- Key people and entities
- Magnetar Financial LLC; Hayley Stein; Leanne Golding
- Latest Form D
- Dec 15, 2025
From SEC filings, not verified. This page republishes the fund's Form D as filed. It is not an offer, solicitation or recommendation, and AltMountain has not reviewed the fund. “Raised” is cumulative sales, not current assets or performance. Private funds are speculative, illiquid and generally limited to accredited investors or qualified purchasers. Full disclosures · Request a correction
Questions about Magnetar Constellation Fund, Ltd
What is the minimum investment for Magnetar Constellation Fund, Ltd?
Magnetar Constellation Fund, Ltd's latest Form D, filed Dec 15, 2025, does not set a minimum investment. Managers can still require one in the offering documents.
Who can invest in Magnetar Constellation Fund, Ltd?
Magnetar Constellation Fund, Ltd is generally open only to qualified purchasers (generally individuals with at least $5 million in investments), because it relies on Section 3(c)(7). It uses Rule 506(b), which does not allow general advertising.
How much has Magnetar Constellation Fund, Ltd raised?
Magnetar Constellation Fund, Ltd reports $8,595,604,910 sold from 199 investors on its Form D filed Dec 15, 2025. This is cumulative sales since the offering began, not current assets or performance.
Where is Magnetar Constellation Fund, Ltd based?
Magnetar Constellation Fund, Ltd is based in Grand Cayman, Cayman Islands and is managed by Magnetar Financial LLC.
When did Magnetar Constellation Fund, Ltd launch?
Magnetar Constellation Fund, Ltd reports its first sale in Mar 2007.
Size compared with every hedge fund
Raised more than 99% of the 2,363 hedge funds based in Cayman Islands, and more than 99% of all 10,308 that report sales.