Private company
Who owns MC Digital Realty
One company in the researched set discloses a stake in MC Digital Realty, none of it sized by anyone who discloses it. MC Digital Realty 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.
MC Digital Realty - Profile
- Type
- joint venture
- Based in
- Japan
- Founded
- 2017
MC Digital Realty is a Japanese data centre operator formed in 2017 as a 50/50 joint venture between Mitsubishi Corporation and Digital Realty. It builds and runs carrier neutral colocation facilities in the Tokyo and Osaka metropolitan areas, selling data centre space, power and interconnection to Japanese corporates, cloud platforms and network operators. The venture was seeded with three properties worth about 40 billion yen: two existing Mitaka facilities contributed by Mitsubishi Corporation and a newly completed Osaka development contributed by Digital Realty. Mitsubishi Corporation supplies local real estate, power procurement and customer relationships, while Digital Realty supplies data centre design, construction and operating practice plus access to its global customer base. The platform has since expanded to a portfolio measured in the hundreds of megawatts across the Kanto and Kansai regions.
Source
MC Digital Realty 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 Digital Realty and Mitsubishi Corporation Announce Joint Venture in Japan, Digital Realty, Mitsubishi Launch Data Center Joint Venture in Japan and Digital Realty and Mitsubishi Corp open data centers in Osaka and Tokyo. 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.
- Digital Realty Trust, Inc., as of 30 Jun 2026. 10-Q Note 5 footnote (2): 'MC Digital Realty (50%)' within the combined APAC balance. MC Digital Realty is a long-standing Japan-focused joint venture, historically with Mitsubishi Corporation, distinct from the Americas-region 'Mitsubishi' JV listed separately above. Combined-balance trap, value left null. source
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 MC Digital Realty where a holder stated one, and are missing where no holder did.