AltMountain

Mason Capital LTD

New York, NY · CIK 1370669 · Managed by Mason Capital Management LLC

Mason Capital LTD 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 $8,023,486,386 of interests to 457 investors since its first sale in Jan 2002. 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 Blackmore Trinda; Mason Capital Management LLC; Jonathan Lewis.

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
$8,023,486,386Cumulative sales reported on Form D
Investors
457
First sale
Jan 1, 2002
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
Blackmore Trinda; Mason Capital Management LLC; Jonathan Lewis
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 LTD

What is the minimum investment for Mason Capital LTD?

According to its latest Form D, filed Mar 16, 2026, the minimum investment Mason Capital LTD accepts from an outside investor is $1,000,000.

Who can invest in Mason Capital LTD?

Mason Capital 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 Mason Capital LTD raised?

Mason Capital LTD reports $8,023,486,386 sold from 457 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 LTD based?

Mason Capital LTD is based in New York, New York and is managed by Mason Capital Management LLC.

When did Mason Capital LTD launch?

Mason Capital LTD reports its first sale in Jan 2002.

Size compared with every hedge fund

Raised more than 99% of the 2,544 hedge funds based in New York, and more than 99% of all 10,308 that report sales.

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