Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
620 institutional managers reported holding TKO for the quarter ended Mar 31, 2026. Together they hold about 39% of shares outstanding; the top 10 hold 21%. 69 opened new positions; 97 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 7.87M | 4.04% | $1.59B | added +5.4% | 2023 Q3 |
| State Street | 6.41M | 3.29% | $1.29B | added +48.3% | 2023 Q3 |
| BlackRock | 5.31M | 2.73% | $1.07B | added +2.3% | 2023 Q3 |
| Morgan Stanley | 5.25M | 2.70% | $1.06B | added +9.2% | 2023 Q3 |
| Ninety One UK LTD | 3.62M | 1.86% | $729.9M | trimmed -27.7% | 2023 Q3 |
| MFS Investment Management | 3.54M | 1.82% | $714.6M | added +11.2% | 2024 Q1 |
| T. Rowe Price | 2.56M | 1.32% | $516.8M | added +8% | 2023 Q3 |
| Lindsell Train LTD (focused) | 2.45M | 1.26% | $494.0M | trimmed -13.1% | 2023 Q3 |
| Geode Capital | 1.98M | 1.02% | $398.6M | added +6.5% | 2023 Q3 |
| XN LP (focused) | 1.90M | 0.97% | $382.3M | trimmed -33.9% | 2023 Q4 |
| UBS | 1.73M | 0.89% | $348.3M | added +20.7% | 2023 Q3 |
| Invesco | 1.58M | 0.81% | $319.0M | added +5.5% | 2023 Q3 |
| Bank OF America CORP /DE/ | 1.39M | 0.72% | $281.1M | added +22.5% | 2023 Q3 |
| Darlington Partners Capital Management, LP (focused) | 1.35M | 0.69% | $272.3M | unchanged | 2023 Q3 |
| Clearbridge Investments, LLC | 1.29M | 0.66% | $259.6M | trimmed -1.5% | 2023 Q3 |
| Vontobel Holding LTD. | 1.14M | 0.58% | $229.1M | trimmed -10.4% | 2025 Q3 |
| American Century Companies INC | 984.6k | 0.51% | $198.6M | added +12.2% | 2023 Q3 |
| Ameriprise Financial INC | 868.4k | 0.45% | $175.1M | trimmed -15.1% | 2023 Q3 |
| Congress Asset Management CO | 727.8k | 0.37% | $146.8M | added +33.1% | 2025 Q2 |
| Charles Schwab Investment Management | 699.9k | 0.36% | $141.1M | added +2.5% | 2023 Q3 |
| Allspring Global Investments Holdings, LLC | 678.3k | 0.35% | $136.8M | trimmed -2.5% | 2023 Q3 |
| Munro Partners | 610.8k | 0.31% | $123.2M | trimmed -14.2% | 2024 Q4 |
| Goldman Sachs | 607.6k | 0.31% | $122.5M | trimmed -14.8% | 2023 Q3 |
| Soros Fund Management | 604.2k | 0.31% | $121.9M | trimmed -4.9% | 2025 Q1 |
| Tremblant Capital Group | 598.3k | 0.31% | $120.7M | trimmed -6.6% | 2023 Q3 |
| TD Asset Management INC | 589.2k | 0.30% | $118.8M | trimmed -7% | 2023 Q3 |
| Northern Trust | 576.2k | 0.30% | $116.2M | trimmed -2.7% | 2023 Q3 |
| Gilder Gagnon Howe & CO LLC | 564.9k | 0.29% | $113.9M | trimmed -18.7% | 2024 Q1 |
| Raymond James Financial INC | 520.9k | 0.27% | $105.1M | trimmed -1.3% | 2024 Q1 |
| Citadel Advisors | 480.0k | 0.25% | $96.8M | added +262% | 2023 Q3 |
| Mackenzie Financial CORP | 474.1k | 0.24% | $95.6M | added +6199.9% | 2025 Q1 |
| Independent Franchise Partners LLP (focused) | 457.6k | 0.23% | $92.3M | trimmed -5.8% | 2023 Q3 |
| Fairview Capital Investment Management, LLC | 441.2k | 0.23% | $89.0M | trimmed -3.2% | 2024 Q1 |
| FMR (Fidelity) | 430.1k | 0.22% | $86.7M | trimmed -11.8% | 2023 Q3 |
| Gates Capital Management, INC. (focused) | 427.9k | 0.22% | $86.3M | trimmed -4.9% | 2024 Q1 |
| Hawk Ridge Capital Management LP (focused) | 413.6k | 0.21% | $83.4M | added +16.5% | 2024 Q2 |
| Annex Advisory Services, LLC | 413.1k | 0.21% | $83.3M | added +3.5% | 2023 Q3 |
| Woodline Partners LP | 409.0k | 0.21% | $82.5M | added +6.6% | 2025 Q2 |
| BNY Mellon | 394.4k | 0.20% | $79.5M | trimmed -9% | 2023 Q3 |
| AllianceBernstein | 375.1k | 0.19% | $75.7M | trimmed -12.4% | 2023 Q3 |
| Epoch Investment Partners, INC. | 371.1k | 0.19% | $74.8M | trimmed -12.6% | 2023 Q3 |
| Natixis Advisors, LLC | 369.0k | 0.19% | $74.4M | added +8.8% | 2023 Q3 |
| Barclays PLC | 356.2k | 0.18% | $71.8M | added +35.5% | 2023 Q4 |
| Wells Fargo & COMPANY/MN | 353.8k | 0.18% | $71.4M | added +5.5% | 2023 Q3 |
| CI Investments INC. | 350.0k | 0.18% | $70.6M | trimmed -12.6% | 2023 Q3 |
| Jones Financial Companies Lllp | 335.0k | 0.17% | $67.6M | added +17122.9% | 2024 Q2 |
| Principal Financial Group INC | 329.0k | 0.17% | $66.3M | trimmed -14.9% | 2023 Q3 |
| CAT Rock Capital Management LP (focused) | 306.5k | 0.16% | $61.8M | added +2.9% | 2025 Q3 |
| Dimensional Fund Advisors | 306.0k | 0.16% | $61.7M | trimmed -8.2% | 2023 Q3 |
| Envestnet Asset Management INC | 244.7k | 0.13% | $49.3M | added +15.7% | 2023 Q3 |
Largest 50 of 620 shown; the full ranked, searchable register is at boothcheck.com/holders/TKO. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.