Cambrian Japan, L.P.
Cambrian Japan, L.P. is a hedge fund based in New York, New York. According to its most recent Form D, filed Jul 15, 2026, the fund has sold $25,274,223 of interests to 16 investors since its first sale in Mar 2007. The minimum investment it accepts from an outside investor is $250,000. It relies on the Section 3(c)(7) exclusion, so investors generally must be qualified purchasers. The offering uses Rule 506(c), which permits general advertising to investors verified as accredited. Related persons named in the filing include Alexander Roepers; Alexander J. Roepers Holdings, LLC; Atlantic Investment Management, Inc.
Performance
No verified returns have been reported for this fund. As a rough guide, Atlantic Investment Management, Inc, which manages it, disclosed U.S. stock holdings that returned an estimated +0.7% 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 +12.8% (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
- $25,274,223Cumulative sales reported on Form D
- Investors
- 16
- First sale
- Mar 1, 2007
- Minimum investment
- $250,000
- Who can invest
- Qualified purchasersSection 3(c)(7): generally $5M+ in investments
- Offering exemption
- Rule 506(c)May advertise; investors must be verified as accredited
- Key people and entities
- Alexander Roepers; Alexander J. Roepers Holdings, LLC; Atlantic Investment Management, Inc
- Latest Form D
- Jul 15, 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 Cambrian Japan, L.P.
What is the minimum investment for Cambrian Japan, L.P.?
According to its latest Form D, filed Jul 15, 2026, the minimum investment Cambrian Japan, L.P. accepts from an outside investor is $250,000.
Who can invest in Cambrian Japan, L.P.?
Cambrian Japan, 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(c), so it may advertise, but every investor must be verified as accredited.
How much has Cambrian Japan, L.P. raised?
Cambrian Japan, L.P. reports $25,274,223 sold from 16 investors on its Form D filed Jul 15, 2026. This is cumulative sales since the offering began, not current assets or performance.
Where is Cambrian Japan, L.P. based?
Cambrian Japan, L.P. is based in New York, New York and is managed by Atlantic Investment Management, Inc.
When did Cambrian Japan, L.P. launch?
Cambrian Japan, L.P. reports its first sale in Mar 2007.
Size compared with every hedge fund
Raised more than 33% of the 2,544 hedge funds based in New York, and more than 34% of all 10,308 that report sales.