Private company
Who owns Frankfurt data center joint venture with AGC Equity Partners
One company in the researched set discloses a stake in Frankfurt data center joint venture with AGC Equity Partners, worth $78m between them. Frankfurt data center joint venture with AGC Equity Partners is private, so no 13F reports it: a 13F covers exchange listed positions only. These figures exist because each holder disclosed the stake in its own filings.
Frankfurt data center joint venture with AGC Equity Partners - Profile
- Type
- joint venture
- Based in
- Germany
- Founded
- 2020
This is a joint venture formed in October 2020 between Iron Mountain and AGC Equity Partners, a London based alternative asset manager investing in real assets and private equity strategies, to develop and operate a hyperscale data center in Frankfurt, Germany. The vehicle was capitalised at more than 300 million euros to build a 280,000 square foot facility with 27 megawatts of capacity, fully pre-leased before completion to a United States based Fortune 100 customer under a ten year lease. AGC supplies the majority of the equity while Iron Mountain manages the design and construction of the site and administers the lease, with full build out targeted for the second quarter of 2022.
Source
Frankfurt data center joint venture with AGC Equity Partners files nothing with the SEC, so none of this comes from a filer record. The description was written for this site in August 2026 from Iron Mountain and AGC Equity Partners Announce Formation of 300 Million+ Euro Joint Venture to Develop and Manage Frankfurt Data Center, Iron Mountain and AGC form Frankfurt data center JV and Iron Mountain and AGC Equity Partners Announce Formation of 300 Million Euro Joint Venture (Business Wire). The ownership figures below come from the holders' filings instead, and are sourced row by row.
The disclosed stakes
One row per position. Where a holder reports the same company in two share classes, both rows are shown rather than summed, because the class is part of a position's identity.
Where each figure comes from
A private stake has no ownership form behind it, so the source is always the holder's own filing or disclosure. Anything modelled says so, with the arithmetic.
- Iron Mountain Incorporated, as of 30 Jun 2026. Iron Mountain 30 Jun 2026 10-Q, Note 3 (Investments): 'Our joint venture with AGC Equity Partners (the Frankfurt JV) is accounted for as an equity method investment... The carrying value and equity interest in the unconsolidated Frankfurt JV as of June 30, 2026... Frankfurt JV $78,209 20%' (dollars in thousands, so $78,209,000). This is DOWN from $85,156,000 (still 20%) at 31 Dec 2025 per the FY2025 10-K. The interest is a joint-venture equity interest, not shares of listed stock, so shares is null per the one-instrument-one-basis rule. The figure reported is a carrying (book) value, not a market value, so value_price_per_share is null. sourcesource 2
What this page is not
It is not a complete register. It lists the holders who happen to be inside the researched set and disclosed the stake themselves. A private company can have many other shareholders, and nothing here rules them out: venture investors, founders and employees usually appear in no public filing at all. Percentages are of Frankfurt data center joint venture with AGC Equity Partners where a holder stated one, and are missing where no holder did.