Digital Realty Trust, Inc.

The full register, from 13F filings

The Register tab above is hand research: a dozen holders, each traced to the filing it came from. This asks the same question of the whole market for the quarter ended 31-mar-2026, where 1,227 managers reported a position. Broad where the research is deep, and shallow in the ways a 13F always is.

Built from 13F filings, which report US listed, long, US custodied positions only. A register from this source is a floor rather than a level: a holder's true position can be far larger, as BlackRock's ASML stake shows at 1.28m shares in a 13F against 26.3m in its 13G/A. Holdings held through derivatives, outside US custody, or below a manager's reporting obligation do not appear. Where a holder is marked as a family, its total sums several separate filing entities and describes something no single filing describes; the constituent entities and their share counts are listed so the total can be checked. That roll-up can legitimately exceed the family's own Schedule 13G, because a 13G is filed by one legal entity: Vanguard reports Alphabet through ten advisory entities, and The Vanguard Group Inc itself reported zero after its January 2026 disaggregation.

What a reader needs to know to read these numbers

• UPREIT structure, handled per the brief's specific warning for this company. Digital Realty Trust, Inc. (the Parent, the listed REIT) is the sole general partner of Digital Realty Trust, L.P. (the Operating Partnership, the OP). As of 30 Jun 2026, per the combined 10-Q, the Parent owned an approximate 98.2% common general partnership interest in the OP; the remaining approximate 1.8% of common limited partnership interests are owned by non-affiliated third parties and certain directors and officers of the Parent, denominated in OP units that are NOT shares of Parent common stock. The balance sheet shows this precisely as of 30 Jun 2026: 370,010 thousand common units held by the General Partner (the Parent) and 6,665 thousand units held by Limited Partners, for 376,675 thousand total common OP units; 370,010 / 376,675 = 98.23%, matching the prose disclosure.
• company.shares_outstanding = 370,036,176 is Digital Realty Trust, Inc.'s common stock outstanding as of 29 Jul 2026, taken from the 10-Q cover page ('Indicate the number of shares outstanding... Digital Realty Trust, Inc.: Common Stock... Outstanding at July 29, 2026: 370,036,176'). This is the correct denominator per the brief: NOT the Operating Partnership's total common units outstanding (376,675,000 as of 30 Jun 2026, per the balance sheet), and NOT a combined shares-plus-units figure. stockanalysis.com, checked 18 Aug 2026, reports DLR 'Shares Outstanding' as approximately 376.70 million, i.e. essentially the unit-inclusive OP total (370,010,000 GP common units + 6,665,000 LP units = 376,675,000, matching to within normal reporting-date drift), NOT Digital Realty Trust, Inc.'s own common share count. This file does NOT use that aggregator figure for shares_outstanding; it is used only as the source for the current share price. This is exactly the aggregator trap the brief warned about, confirmed here as it was on the UPREIT researched two days prior (Simon Property Group).
• market_cap_usd (about $73.24 billion) is computed as 370,036,176 x $197.94 (stockanalysis.com intraday price, 18 Aug 2026, basis aggregator/confidence reported for the price input only). This differs from stockanalysis.com's own displayed market cap (about $74.56 billion), which is built on their unit-inclusive 376.70 million share count rather than the 370,036,176 common shares used here.
• Insiders (directors and executive officers): the 2026 proxy's Principal Stockholders table reports beneficial ownership as 'shares and units' combined, and every one of the 12 named directors and executive officers holds vested LTIP units and/or Class D Units (both are Operating Partnership unit classes) alongside, or instead of, common stock. Seven of the twelve (Mary Hogan Preusse, Andrew P. Power the CEO, Stephen R. Bolze, VeraLinn Jamieson, Kevin J. Kennedy, Afshin Mohebbi, Susan Swanezy) hold ONLY units, with zero Digital Realty common stock disclosed; their entire reported total exactly equals their footnoted unit count. Per the brief's rule, only Andrew P. Power is broken out as an individual register row (as the CEO and the clearest illustration), with shares: 0 and the real unit quantity (324,780 combined LTIP and Class D units) in method_note; the rest are folded into the aggregate group row.
• Register self-gate, computed exactly as the chart computes it (members counted at full value, the aggregate counted at its residual against the container it rolls up into, everything else at full value): 12 register rows, summing to 185,324,914 shares against 370,036,176 shares outstanding, or 50.08%. This sits above the 25 to 45 percent range the brief calls typical but within the 15 to 55 percent band it calls acceptable. The concentration is institutional: the top 5 alone (Vanguard, BlackRock, Cohen & Steers, State Street, Norges Bank) sum to approximately 43.9%, all plain 13F-HR figures (Vanguard summed per the successor rule, Cohen & Steers rescaled from thousands) with no unit-count errors left unresolved. No single holder or vehicle was found that would explain the total as an error rather than genuine concentration; this is a slightly higher percentage than the comparable UPREIT researched two days prior (Simon Property Group, 48.23%), consistent with the brief's observation that REITs run to the top of the typical band.
• Two thousands-trap filers were caught and rescaled for this company, matching the brief's warning: Cohen & Steers, Inc. (CIK 0001284812, the parent; corrected raw XML value $5,249,084 to $5,249,084,000) and T. Rowe Price Associates, Inc. (CIK 0000080255; corrected raw XML value $591,603 to $591,603,000). Both corrections were verified against the approximately $179.58 per-share cluster implied by every other Q2 2026 13F filer holding CUSIP 253868103. Cohen & Steers, Inc. only appeared under the exact string 'Digital Realty Trust Inc.' (mixed case, full word 'Realty'), not the abbreviated 'DIGITAL RLTY TR INC' used by most other filers; a narrow search on the abbreviated form alone would have wrongly concluded Cohen & Steers held nothing.
• Vanguard case for this company (per the brief's required check): Vanguard Group Inc's parent CIK 0000102909 filed Form 13F-NT (a notice carrying no holdings) for the quarter ended 30 Jun 2026, confirmed directly against its EDGAR submissions feed. Per the brief's rule, the two successor entities (Vanguard Capital Management LLC, CIK 0002100119; Vanguard Portfolio Management LLC, CIK 0002100121) were summed rather than substituting a single row, matching the same case found on Simon Property Group two days prior.
• T. Rowe Price Investment Management, Inc. (CIK 0001897612) and Capital World Investors (CIK 0001422849, part of the Capital Group family) were each individually checked and confirmed to hold zero DLR shares for Q2 2026 (CUSIP 253868103 absent from each filer's full information table, confirmed by both exact-CUSIP and broad-fragment search), per the brief's requirement to check all mandated CIKs rather than assume.
• Combined-balance trap on the holdings side, as expected for this JV-heavy REIT: the 10-Q's 'Investments in unconsolidated entities' totaled $3,548,297 thousand at 30 Jun 2026, split across four REGIONAL sub-totals (Americas $2,170,425k, APAC $673,671k, EMEA $269,375k, Global $434,826k), each of which bundles multiple named joint ventures with individually disclosed ownership percentages but no individually disclosed carrying values. 18 named joint venture interests are recorded as holdings rows above with value_usd null for this reason (11 in Americas, 4 in APAC, 3 in EMEA), plus three DCREIT-related rows in the Global bucket. Two of the named interests (GI Partners, and the Digital Realty DC Partners NA Fund) are disclosed only as ranges spanning multiple deals rather than single percentages, so pct_of_target is left null on those two rather than invented as a midpoint.
• The DCREIT (Digital Core REIT) unit stake is the one holding in this bucket that IS individually sized, because DCREIT is itself a publicly traded, Singapore-listed REIT (SGX: DCRU) and Digital Realty's 10-Q separately discloses a fair-value figure for its unit stake based on DCREIT's quoted market price ($0.51/unit at 30 Jun 2026, 421 million units, approximately $215 million fair value), distinct from the equity-method carrying value that sits inside the combined Global-region balance. Digital Realty separately retains direct (non-DCREIT-unit) interests in specific properties not fully contributed to DCREIT: 10% in the underlying North American operating properties and 35% in a Frankfurt asset; both are recorded as separate holdings rows with pct_of_target sourced but value_usd null (same combined-balance reasoning).
• Two named joint venture partners appear twice under the same abbreviated name but are different ventures with different stakes: 'Blackstone' at 50% in the Americas region and 'Blackstone' at 20% in the EMEA region (the FY2025 10-K separately describes the Blackstone Americas venture as covering Frankfurt/Northern Virginia hyperscale campuses with roughly $707m of 2024 contribution proceeds). 'Mitsubishi' (Americas, 20%, diluted from 35% by a January 2025 cash contribution) is likewise a different, separately-named entity from 'MC Digital Realty' (APAC/Japan, 50%), which the filing does not explicitly link to Mitsubishi Corporation even though it has historically been a Mitsubishi joint venture; that link was not independently re-verified in this task.
• Counterparty reconciliation on the Realty Income joint venture, the cheapest independent check available on a private JV. Realty Income Corporation is already in this database and its own file (data/research/realty-income.json, researched in an earlier chunk) records an 80.0 per cent equity-method interest in a two-property data centre joint venture whose partner it names as Digital Realty Trust, Inc., carrying amount USD 348,861,000 at 30 Jun 2026, sourced to Realty Income's Q2 2026 10-Q Note 4. This file independently records Digital Realty's side of the same venture at 20 per cent, sourced to Digital Realty's own Q2 2026 10-Q Note 5 footnote (1). The two halves sum to exactly 100 per cent. Neither researcher saw the other's file, and neither company's filing states the counterparty's share, so this is genuine two-sided corroboration rather than a copied figure. Note that the two sides describe the venture differently by design: Realty Income sizes it (it is a separately disclosed equity-method investment there) while Digital Realty cannot (it sits inside the combined USD 2.17 billion Americas balance), which is why value_usd is null on this side and not on that one.