TKO Group Holdings, 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 631 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

• UP-C DENOMINATOR CHOICE: TKO Group Holdings, Inc. (the listed entity) is the sole managing member of TKO Operating Company, LLC ('TKO OpCo') and owns only 39.0% of it as of 30 Jun 2026 (Q2 2026 10-Q); EGH (Endeavor Group Holdings, Inc.) and its subsidiaries own the other 61.0% economically, held as TKO OpCo Units. This file uses TKO's ACTUAL, currently outstanding total shares (Class A 73,111,098 + Class B 116,158,615 = 189,269,713, both from the Q2 2026 10-Q cover page dated 31 Jul 2026) as company.shares_outstanding, and every pct_of_company in this file is computed against this single combined number.
• WHY THIS IS TKO'S VERSION OF THE CARVANA CASE, NOT THE BLACKSTONE-SCHWARZMAN CASE: unlike Blackstone Holdings Partnership Units (a separate legal entity's units with no numeric relationship to Blackstone Inc.'s own reported share count), TKO's Class B common stock IS a real, currently-outstanding class of stock of the LISTED parent (TKO Group Holdings, Inc. itself, not TKO OpCo), reported on TKO's own balance sheet and cover page alongside Class A, and it is paired 1-for-1 with a TKO OpCo Unit: 'When a TKO OpCo Unit is exchanged by a holder thereof, a corresponding share of [Class B common stock is cancelled]' (2026 DEF 14A). Unlike Carvana's Class B (10 votes/share while the Garcia family holds >=25%, and a 1.25-LLC-Units-per-Class-B-share ratio requiring restatement), TKO's Class A and Class B carry EQUAL votes (1 vote/share each, 'The Class A common stock and Class B common stock will vote as a single class', 2026 DEF 14A) and the OpCo-Unit-to-Class-B-share ratio is exactly 1:1 with no restatement arithmetic needed. Class B itself carries no dividend or liquidation rights (economically inert), only votes, matching the general pattern the brief describes, but because it IS part of TKO's own reported share count and converts 1:1, it is treated like Carvana's Class B rather than nulled out like Blackstone's LP units. This was checked directly: the market's own aggregator (stockanalysis.com, 19 Aug 2026) independently reports TKO's 'shares outstanding' as 189.27 million, an exact match to this file's Class A + Class B combined basis, confirming this is the standard market convention for this stock, not an invented denominator.
• The proxy's own beneficial-ownership table (2026 DEF 14A, Record Date 16 Apr 2026) independently reflects TKO OpCo Units as as-exchanged Class A common stock for beneficial-ownership purposes and states Endeavor Group Holdings, Inc. at 63.9% against its own Record Date denominator of 191,126,288 (Class A 74,967,673 + Class B 116,158,615). This file's Endeavor row recomputes the same numerator (122,142,162 shares) against a slightly smaller, fresher denominator (189,269,713, from the 31 Jul 2026 10-Q cover page), because TKO's Class A count fell by 1,856,575 shares between 16 Apr and 31 Jul 2026 (an Accelerated Share Repurchase settled during Q2 2026: 'the Company received final delivery of 1,031,119 shares of Class A common stock on July 1, 2026. Together with the initial delivery of 3,136,179 shares... received on March 11, 2026'). This produces Endeavor's 64.53% here versus the proxy's own 63.9%; both are internally consistent, the difference is purely the denominator date, not a double count or a mixed basis.
• NONCONTROLLING INTEREST CHECKED, NOT INVERTED: TKO consolidates TKO OpCo (as its sole managing member and primary beneficiary) and reports the 61.0% of TKO OpCo it does not own as a nonredeemable noncontrolling interest ($4,934,964 thousand at 30 Jun 2026, per the 10-Q balance sheet) on ITS OWN consolidated financial statements. This is Endeavor owning part of TKO's own subsidiary, the correct direction; it is NOT recorded anywhere in this file as TKO owning part of Endeavor, and no holdings-side row was created for it.
• SELF-GATE, computed from this final file exactly as the chart computes it (no row in this file carries rolls_up_into or is_aggregate, so every row counts at full value; there is no container to reduce): 13 register rows. Sum of shares: Endeavor/Silver Lake 122,142,162 + Vincent K. McMahon 6,442,325 + Vanguard 7,630,946 + BlackRock 5,668,039 + Morgan Stanley 4,702,447 + State Street 4,634,092 + MFS 3,728,177 + Ninety One UK 3,139,948 + T. Rowe Price Associates 2,636,406 + Lindsell Train 2,098,862 + XN LP 2,492,185 + Geode 1,729,452 + FMR 821,839 = 167,866,880 shares, which is 88.69% of shares_outstanding (189,269,713). This is ABOVE the brief's 55% flag threshold, checked against the three known causes: (1) NOT a mixed instrument: every institutional row is the same CUSIP 87256C101 read from each filer's own Q2 2026 13F-HR, cross-checked at a tightly consistent implied price of approximately $200.95 to $202.19/share across 11 independent institutional filers/families (including the T. Rowe Price thousands-conversion check, which lands in the same band); Endeavor's and McMahon's rows are real common-stock share counts (Class A directly, plus Class B paired 1:1 with TKO OpCo Units for Endeavor) from a DEF 14A beneficial-ownership table and a Schedule 13G, not a mismatched instrument. (2) NOT a mixed basis: every pct_of_company, including Endeavor's and McMahon's rows, is computed against the single 189,269,713-share combined basis described above; no row mixes an as-exchanged proxy denominator with an actual-shares-only denominator. (3) NOT a double count: 11 institutional families are each a distinct CIK/CIK-family reporting its own Section 13(f) position with no relationship to any other row; Endeavor/Silver Lake and Vincent McMahon are two legally and economically distinct holders (McMahon is a former Executive Chairman with no current officer/director role per the 2026 proxy, so he sits fully outside any officers/directors grouping). This file deliberately EXCLUDES the proxy's own 'All directors and executive officers as a group (14 persons)' row (122,974,460 shares, 64.3%): that aggregate's near-entirety is Egon P. Durban's deemed beneficial ownership of the SAME Endeavor/Silver Lake block already on its own row above (Durban, a director, is 'deemed to have beneficial ownership' of all 122,142,162 Endeavor shares per DEF 14A footnote (16)), so including both would repeat the JWM Family Enterprises/Marriott double-count the brief specifically warns against; the residual named individual officers/directors (Ariel Emanuel 143,850 sh and others, none exceeding roughly 0.1% of the company) are each below this file's top-8-to-12-plus-strategic cutoff and are not itemized. The 88.69% concentration is a genuine, sourced feature of this stock: TKO is a controlled Up-C where the controlling holder alone (Endeavor/Silver Lake) is already 64.53% of the combined basis, sitting on top of an unusually concentrated Class A float of only 73.1 million shares in which 11 institutional families alone hold 39,282,393 shares (53.7% of Class A outstanding).
• IMPLIED PER-SHARE PRICE CHECK across every institutional 13F row, all dated 30 Jun 2026: Vanguard family $201.33/sh, BlackRock $201.30/sh, Morgan Stanley $201.32/sh, State Street $201.31/sh, MFS $202.19/sh (a modest outlier, within a normal range for a multi-lot filer), Ninety One UK $201.31/sh, T. Rowe Price Associates $201.29/sh (after the thousands conversion), Lindsell Train $201.31/sh, XN LP $201.31/sh, Geode $200.95/sh, FMR $201.32/sh. No holder implies a price materially off this band, consistent with a single CUSIP and no unit/warrant contamination.
• CROSS-CHECK AGAINST THE PROJECT'S OWN 31 MAR 2026 SNAPSHOT (data/registers/TKO.json), used only as an upper bound per the brief's caution, never as corroboration of a level: that truncated top-40 all-filer register sums to 62,537,589 shares across 40 holders (Class A only, institutional 13F filers as of a full quarter earlier); this file's Q2 2026 institutional-only subset (11 families, 39,282,393 shares) is properly a SUBSET of that larger, staler figure, which is the expected direction (fewer families itemized here, one quarter fresher, and TKO's Class A float has both grown via buyback-adjusted denominators and shifted holder-by-holder between quarters).
• CAPITAL GROUP AND SECOND T. ROWE PRICE REGISTRANT SWEPT AND FOUND TO HOLD NOTHING: neither is in data/registers/TKO.json at all (a known gap in that snapshot, per the brief). All 11 Capital Group-family registrants found via SEC company search on 'capital research', 'capital world', 'capital international' and 'capital group' were checked; 3 (Capital Group Companies Inc. CIK 0000732812, last 13F-HR filed 2002; Capital Group International Inc. CIK 0000949308, no 13F-HR on record; Capital Research & Management Co CIK 0000017283, last 13F-HR filed 2007) are dormant 13F filers and were not queried further. The 8 currently active Capital Group registrants (Capital Research Global Investors 0001422848, Capital World Investors 0001422849, Capital International Investors 0001562230, Capital International Inc./CA/ 0000895213, Capital International Sarl 0001065349, Capital International Ltd /CA/ 0001065350, Capital Group Investment Management Pte. Ltd. 0001939970, Capital Group Private Client Services, Inc. 0001857666) were each read directly from their own Q2 2026 13F-HR information tables and NONE holds a TKO position (CUSIP 87256C101 absent from all 8). T. Rowe Price Investment Management, Inc. (CIK 0001897612), the second mandated T. Rowe Price registrant, was also checked and holds no TKO position (see that row's method_note). These are recorded as checked negatives in this note, not as null rows, per the brief.
• HOLDINGS SIDE: searched the Q2 2026 10-Q and FY2025 10-K for 'equity method' (found: three named investees, see holdings array), 'non-marketable'/'nonmarketable equity investments' (found: a separate, unnamed bucket of $28,475 thousand 'without readily determinable fair values' plus $80 thousand 'with readily determinable fair values' at 30 Jun 2026, not individually named or broken out, correctly excluded per the brief since no single investee is identifiable or sizable within it), 'unconsolidated' (0 hits in either filing), 'joint venture' (found: the Sela/Zuffa Boxing joint venture, itemized), 'investment in' (no additional named investee beyond the three already captured), and Exhibit 21.1 of the FY2025 10-K (a bare subsidiaries name-and-jurisdiction list with no ownership-percentage column, like Carvana's and Labcorp's, and SNTV/EverPass/Boxing HoldCo do not appear on it since they are equity-method investees, not consolidated subsidiaries; treated as a genuine negative for any further detail rather than evidence of an unexplored holding). UFC, WWE, IMG, On Location and PBR are wholly owned operating subsidiaries acquired outright (WWE via the September 2023 TKO Transactions; IMG/On Location/PBR via the Endeavor Asset Acquisition completed 28 Feb 2025) and are correctly EXCLUDED from holdings per the brief.
• Euroleague Ventures S.A., a former equity-method investment, was DIVESTED in Q3 2025 per the Q2 2026 10-Q ('During the third quarter of 2025, the Company divested its equity-method investment in Euroleague Ventures S.A.'); it is not a current holding and is not itemized here.