AltMountain

US Research Equity Extended Fund, L.P.

Boston, MA · CIK 1666361 · Managed by Wellington Alternative Investments

US Research Equity Extended Fund, L.P. is a hedge fund based in Boston, Massachusetts. According to its most recent Form D, filed Feb 20, 2026, the fund has sold $4,213,050,742 of interests to 192 investors since its first sale in Feb 2016. 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 Wellington Alternative Investments LLC; Wellington Management Investment, Inc; Wellington Management Company LLP.

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.

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

Total raised
$4,213,050,742Cumulative sales reported on Form D
Investors
192
First sale
Feb 1, 2016
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
Wellington Alternative Investments LLC; Wellington Management Investment, Inc; Wellington Management Company LLP
Latest Form D
Feb 20, 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 US Research Equity Extended Fund, L.P.

What is the minimum investment for US Research Equity Extended Fund, L.P.?

US Research Equity Extended Fund, L.P.'s latest Form D, filed Feb 20, 2026, does not set a minimum investment. Managers can still require one in the offering documents.

Who can invest in US Research Equity Extended Fund, L.P.?

US Research Equity Extended Fund, 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 US Research Equity Extended Fund, L.P. raised?

US Research Equity Extended Fund, L.P. reports $4,213,050,742 sold from 192 investors on its Form D filed Feb 20, 2026. This is cumulative sales since the offering began, not current assets or performance.

Where is US Research Equity Extended Fund, L.P. based?

US Research Equity Extended Fund, L.P. is based in Boston, Massachusetts and is managed by Wellington Alternative Investments.

When did US Research Equity Extended Fund, L.P. launch?

US Research Equity Extended Fund, L.P. reports its first sale in Feb 2016.

Size compared with every hedge fund

Raised more than 96% of the 474 hedge funds based in Massachusetts, and more than 98% of all 10,307 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