Private company
Who owns Storage Portfolio II JV LLC
One company in the researched set discloses a stake in Storage Portfolio II JV LLC, worth -$11m between them. Storage Portfolio II JV LLC 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.
What this is
A private United States joint venture that has held a portfolio of 36 self storage facilities since at least 2017, branded and managed by Extra Space Storage under a management fee arrangement, with its only public record the equity method investment table in Extra Space's own SEC filings.
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.
- Extra Space Storage Inc., as of 30 Jun 2026. 10-Q (period 30 Jun 2026): 36 stores, 10% equity ownership, 30% excess profit %, carrying value NEGATIVE $11,138 thousand at 30 Jun 2026 (negative $10,588 thousand at 31 Dec 2025). Stated in thousands in the filing; multiplied by 1,000 here. A negative equity-method balance reflects cumulative distributions in excess of contributed capital plus cumulative equity in earnings for a levered JV; it is the carrying value on EXR's balance sheet, not a market value, and is reported as filed rather than floored at zero. 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 Storage Portfolio II JV LLC where a holder stated one, and are missing where no holder did.