Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
513 institutional managers reported holding U for the quarter ended Mar 31, 2026. Together they hold about 79% of shares outstanding; the top 10 hold 41%. 102 opened new positions; 183 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 36.84M | 8.48% | $808.7M | added +3.5% | 2020 Q3 |
| Silver Lake Group, L.l.c. (focused) | 34.74M | 8.00% | $762.4M | unchanged | 2020 Q3 |
| SC US (TTGP), LTD. (focused) | 31.82M | 7.33% | $698.6M | unchanged | 2020 Q3 |
| BlackRock | 18.93M | 4.36% | $415.6M | added +1.9% | 2020 Q3 |
| Atreides Management, LP | 12.39M | 2.85% | $271.9M | added +86.9% | 2024 Q4 |
| Slate Path Capital LP (focused) | 11.35M | 2.61% | $249.1M | added +38.4% | 2024 Q4 |
| Wellington Management | 9.92M | 2.28% | $217.7M | trimmed -36% | 2022 Q4 |
| D. E. Shaw | 8.02M | 1.85% | $176.0M | added +143.7% | 2023 Q2 |
| Two Sigma | 7.91M | 1.82% | $173.6M | added +398.9% | 2023 Q2 |
| Point72 | 6.68M | 1.54% | $146.6M | added +15.3% | 2023 Q2 |
| Morgan Stanley | 6.64M | 1.53% | $145.7M | added +76% | 2020 Q3 |
| Geode Capital | 6.25M | 1.44% | $137.1M | added +6.7% | 2020 Q4 |
| State Street | 5.93M | 1.37% | $130.2M | added +3.9% | 2020 Q4 |
| FMR (Fidelity) | 5.92M | 1.36% | $130.0M | trimmed -39.1% | 2020 Q3 |
| Capital Research Global Investors | 5.12M | 1.18% | $112.5M | trimmed -63.6% | 2022 Q4 |
| Citadel Advisors | 4.99M | 1.15% | $109.5M | added +769.8% | 2020 Q3 |
| T. Rowe Price Investment Management, INC. | 4.67M | 1.08% | $102.5M | added +52.2% | 2025 Q3 |
| Temasek Holdings | 4.58M | 1.05% | $100.6M | added +81.8% | 2025 Q2 |
| Hood River Capital Management LLC | 4.49M | 1.03% | $98.6M | added +61% | 2025 Q2 |
| Schonfeld Strategic Advisors | 4.28M | 0.99% | $93.9M | added +519.7% | 2024 Q2 |
| Infinitum Asset Management, LLC (focused) | 4.25M | 0.98% | $93.3M | added +203.6% | 2025 Q2 |
| Dimensional Fund Advisors | 4.25M | 0.98% | $93.2M | added +52.8% | 2021 Q3 |
| Jane Street | 3.88M | 0.89% | $85.2M | added +8.1% | 2020 Q3 |
| Deutsche Bank AG\ | 3.58M | 0.82% | $78.5M | added +800% | 2020 Q3 |
| UBS | 3.56M | 0.82% | $78.1M | added +63.3% | 2020 Q3 |
| D1 Capital Partners L.p. (focused) | 3.26M | 0.75% | $71.6M | opened | 2026 Q1 |
| Millennium Management | 3.24M | 0.75% | $71.1M | added +285.7% | 2022 Q4 |
| Woodline Partners LP | 3.10M | 0.71% | $68.0M | added +883.3% | 2025 Q2 |
| Susquehanna International Group | 2.92M | 0.67% | $64.2M | added +95.4% | 2020 Q3 |
| Charles Schwab Investment Management | 2.69M | 0.62% | $59.1M | added +8.2% | 2020 Q4 |
| Broad Peak Investment Advisers Pte LTD (focused) | 2.64M | 0.61% | $58.0M | unchanged | 2025 Q1 |
| Holocene Advisors | 2.58M | 0.59% | $56.6M | opened | 2026 Q1 |
| Goldman Sachs | 2.51M | 0.58% | $55.0M | added +153.6% | 2020 Q4 |
| Renaissance Technologies | 2.49M | 0.57% | $54.6M | opened | 2026 Q1 |
| Amundi | 2.23M | 0.51% | $48.9M | added +74% | 2021 Q1 |
| WT Asset Management LTD (focused) | 2.15M | 0.49% | $47.2M | added +64.9% | 2025 Q4 |
| Two Creeks Capital Management, LP (focused) | 1.98M | 0.46% | $43.5M | added +86.5% | 2025 Q4 |
| Northern Trust | 1.84M | 0.42% | $40.5M | added +1.4% | 2020 Q4 |
| Invesco | 1.73M | 0.40% | $38.0M | trimmed -40.4% | 2020 Q3 |
| VAN ECK Associates CORP | 1.72M | 0.40% | $37.7M | added +193.2% | 2020 Q4 |
| Squarepoint Ops LLC | 1.70M | 0.39% | $37.3M | added +593% | 2024 Q2 |
| Kora Management LP (focused) | 1.59M | 0.37% | $35.0M | added +5547.9% | 2025 Q1 |
| Voloridge Investment Management | 1.59M | 0.37% | $34.9M | opened | 2026 Q1 |
| Nuveen | 1.54M | 0.35% | $33.8M | added +11.4% | 2020 Q4 |
| Marshall Wace | 1.45M | 0.33% | $31.7M | opened | 2025 Q1 |
| Flight Deck Capital, LP (focused) | 1.40M | 0.32% | $30.7M | added +368.2% | 2025 Q1 |
| Capital Group (American Funds) | 1.38M | 0.32% | $30.3M | opened | 2026 Q1 |
| Bank OF America CORP /DE/ | 1.36M | 0.31% | $29.9M | added +23.4% | 2020 Q3 |
| Ameriprise Financial INC | 1.25M | 0.29% | $27.5M | trimmed -49.4% | 2021 Q1 |
| Tudor Investment | 1.21M | 0.28% | $26.6M | added +137.7% | 2020 Q3 |
Largest 50 of 513 shown; the full ranked, searchable register is at boothcheck.com/holders/U. 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.