Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
421 institutional managers reported holding ROIV for the quarter ended Mar 31, 2026. Together they hold about 76% of shares outstanding; the top 10 hold 46%. 79 opened new positions; 49 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| FMR (Fidelity) | 77.98M | 11.19% | $2.16B | added +18.5% | 2021 Q4 |
| Morgan Stanley | 51.83M | 7.44% | $1.44B | trimmed -11.2% | 2021 Q4 |
| BlackRock | 44.25M | 6.35% | $1.23B | added +7.5% | 2021 Q4 |
| Vanguard Group | 44.03M | 6.32% | $1.22B | added +4.6% | 2021 Q4 |
| QVT Financial LP | 25.16M | 3.61% | $697.2M | trimmed -4.6% | 2021 Q4 |
| UBS | 24.36M | 3.50% | $675.0M | added +19% | 2022 Q2 |
| State Street | 16.19M | 2.32% | $448.5M | trimmed -6.8% | 2021 Q4 |
| Adage Capital Partners GP, L.l.c. | 12.79M | 1.84% | $354.5M | added +19.8% | 2022 Q2 |
| Goldman Sachs | 11.11M | 1.59% | $307.9M | added +1.2% | 2022 Q1 |
| Geode Capital | 10.18M | 1.46% | $282.2M | added +24.9% | 2021 Q4 |
| Farallon Capital | 9.68M | 1.39% | $268.1M | added +26048.6% | 2023 Q2 |
| Two Seas Capital LP (focused) | 9.33M | 1.34% | $258.5M | trimmed -4.7% | 2021 Q4 |
| Perceptive Advisors LLC | 8.29M | 1.19% | $229.6M | added +3.8% | 2025 Q2 |
| Patient Square Capital LP (focused) | 8.17M | 1.17% | $226.3M | unchanged | 2022 Q4 |
| Dimensional Fund Advisors | 7.48M | 1.07% | $207.2M | trimmed -19.2% | 2024 Q2 |
| Assenagon Asset Management S.a. | 7.08M | 1.01% | $196.1M | added +2% | 2025 Q1 |
| T. Rowe Price | 6.99M | 1.00% | $193.8M | added +31.1% | 2023 Q2 |
| Darwin Global Management, LTD. (focused) | 6.80M | 0.97% | $188.4M | opened | 2026 Q1 |
| Viking Global | 6.65M | 0.95% | $184.3M | added +3.2% | 2021 Q4 |
| Invesco | 6.44M | 0.92% | $178.4M | added +182.2% | 2022 Q2 |
| National Bank OF Canada /FI/ | 6.30M | 0.90% | $174.5M | added +208.7% | 2025 Q4 |
| AQR Capital | 5.95M | 0.85% | $164.8M | added +575.2% | 2025 Q3 |
| Rubric Capital Management LP | 5.00M | 0.72% | $138.6M | trimmed -44.4% | 2022 Q4 |
| Baker Bros. Advisors LP | 4.87M | 0.70% | $134.9M | trimmed -12.4% | 2022 Q4 |
| Northern Trust | 3.52M | 0.51% | $97.6M | added +7.1% | 2021 Q4 |
| Charles Schwab Investment Management | 3.46M | 0.50% | $95.8M | added +6.7% | 2021 Q4 |
| Qube Research & Technologies LTD | 3.45M | 0.49% | $95.6M | added +354.5% | 2025 Q4 |
| Adar1 Capital Management, LLC | 3.29M | 0.47% | $91.1M | trimmed -4.2% | 2023 Q4 |
| Bank OF America CORP /DE/ | 3.16M | 0.45% | $87.7M | added +8% | 2022 Q1 |
| Janus Henderson | 3.10M | 0.44% | $85.8M | added +6.1% | 2022 Q2 |
| Jennison Associates LLC | 2.98M | 0.43% | $82.7M | added +26.7% | 2025 Q4 |
| Affinity Asset Advisors, LLC | 2.80M | 0.40% | $77.6M | added +64.7% | 2023 Q1 |
| BNY Mellon | 2.74M | 0.39% | $75.8M | trimmed -5.8% | 2021 Q4 |
| Pictet Asset Management Holding SA | 2.67M | 0.38% | $74.1M | added +15.6% | 2022 Q2 |
| SB Investment Advisers (UK) LTD (focused) | 2.67M | 0.38% | $74.0M | trimmed -83.7% | 2021 Q4 |
| BNP Paribas Financial Markets | 2.52M | 0.36% | $69.7M | added +9.7% | 2024 Q4 |
| Citadel Advisors | 2.52M | 0.36% | $69.7M | added +10.1% | 2022 Q2 |
| BlackBarn Capital Partners LP (focused) | 2.29M | 0.33% | $63.3M | trimmed -25.9% | 2023 Q4 |
| Marshall Wace | 2.25M | 0.32% | $62.3M | trimmed -35% | 2022 Q3 |
| DME Capital Management, LP (focused) | 2.15M | 0.31% | $59.7M | added +4% | 2024 Q1 |
| Clearbridge Investments, LLC | 2.01M | 0.29% | $55.6M | added +1.7% | 2024 Q1 |
| Candriam S.c.a. | 2.00M | 0.29% | $55.5M | trimmed -19.6% | 2025 Q1 |
| Integral Health Asset Management, LLC | 2.00M | 0.29% | $55.4M | added +135.3% | 2025 Q1 |
| Nuveen | 1.96M | 0.28% | $54.2M | trimmed -13.1% | 2023 Q2 |
| Woodline Partners LP | 1.75M | 0.25% | $48.5M | unchanged | 2022 Q3 |
| Maverick Capital | 1.63M | 0.23% | $45.1M | opened | 2026 Q1 |
| Penn Davis Mcfarland INC | 1.59M | 0.23% | $44.1M | trimmed -14.3% | 2024 Q1 |
| Polar Capital Holdings PLC | 1.58M | 0.23% | $43.7M | trimmed -41.3% | 2024 Q1 |
| Citigroup INC | 1.54M | 0.22% | $42.6M | trimmed -10.3% | 2021 Q4 |
| Amundi | 1.48M | 0.21% | $41.0M | added +41.9% | 2022 Q4 |
Largest 50 of 421 shown; the full ranked, searchable register is at boothcheck.com/holders/ROIV. 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.