AltMountain

Altimeter Offshore Ltd.

Boston, MA · CIK 1833087 · Managed by Altimeter Capital Management, LP

Altimeter Offshore Ltd. is a hedge fund based in Boston, Massachusetts. According to its most recent Form D, filed Nov 20, 2025, the fund has sold $2,184,157,864 of interests to 143 investors since its first sale in Jan 2011. The minimum investment it accepts from an outside investor is $100,000. 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 Scott Dakers; Altimeter Capital Management, LP; Matthew Tolve.

Performance

13F estimate · public data only

No verified returns have been reported for this fund. As a rough guide, Altimeter Capital Management, LP, which manages it, disclosed U.S. stock holdings that returned an estimated +5.9% 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 +41.7% (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.

Is this your fund? Report your monthly returns · How performance works

Total raised
$2,184,157,864Cumulative sales reported on Form D
Investors
143
First sale
Jan 1, 2011
Minimum investment
$100,000
Who can invest
Qualified purchasersSection 3(c)(7): generally $5M+ in investments
Offering exemption
Rule 506(b)No general advertising
Key people and entities
Scott Dakers; Altimeter Capital Management, LP; Matthew Tolve
Latest Form D
Nov 20, 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 Altimeter Offshore Ltd.

What is the minimum investment for Altimeter Offshore Ltd.?

According to its latest Form D, filed Nov 20, 2025, the minimum investment Altimeter Offshore Ltd. accepts from an outside investor is $100,000.

Who can invest in Altimeter Offshore Ltd.?

Altimeter Offshore 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 Altimeter Offshore Ltd. raised?

Altimeter Offshore Ltd. reports $2,184,157,864 sold from 143 investors on its Form D filed Nov 20, 2025. This is cumulative sales since the offering began, not current assets or performance.

Where is Altimeter Offshore Ltd. based?

Altimeter Offshore Ltd. is based in Boston, Massachusetts and is managed by Altimeter Capital Management, LP.

When did Altimeter Offshore Ltd. launch?

Altimeter Offshore Ltd. reports its first sale in Jan 2011.

Size compared with every hedge fund

Raised more than 90% of the 474 hedge funds based in Massachusetts, and more than 96% of all 10,308 that report sales.

Other funds with the same team

More hedge funds in Boston

Similar-size hedge funds in Massachusetts

All hedge funds in Massachusetts