Mason Capital L P
Mason Capital L P is a hedge fund based in New York, New York. According to its most recent Form D, filed Mar 16, 2026, the fund has sold $4,515,156,826 of interests to 522 investors since its first sale in Nov 2000. The minimum investment it accepts from an outside investor is $1,000,000. 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 John Grizzetti; Michael Martino; Mason Management LLC.
Performance
No verified returns have been reported for this fund. Hedge fund returns are not part of SEC filings; managers report them to AltMountain directly.
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- Total raised
- $4,515,156,826Cumulative sales reported on Form D
- Investors
- 522
- First sale
- Nov 1, 2000
- Minimum investment
- $1,000,000
- Who can invest
- Qualified purchasersSection 3(c)(7): generally $5M+ in investments
- Offering exemption
- Rule 506(b)No general advertising
- Key people and entities
- John Grizzetti; Michael Martino; Mason Management LLC
- Latest Form D
- Mar 16, 2026
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 Mason Capital L P
What is the minimum investment for Mason Capital L P?
According to its latest Form D, filed Mar 16, 2026, the minimum investment Mason Capital L P accepts from an outside investor is $1,000,000.
Who can invest in Mason Capital L P?
Mason Capital L P 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 Mason Capital L P raised?
Mason Capital L P reports $4,515,156,826 sold from 522 investors on its Form D filed Mar 16, 2026. This is cumulative sales since the offering began, not current assets or performance.
Where is Mason Capital L P based?
Mason Capital L P is based in New York, New York and is managed by Mason Capital Management LLC.
When did Mason Capital L P launch?
Mason Capital L P reports its first sale in Nov 2000.
Size compared with every hedge fund
Raised more than 98% of the 2,545 hedge funds based in New York, and more than 98% of all 10,308 that report sales.