Reported 411,863 shares, down 36,854 (8.2%) from the prior quarter.
Reported value -29.8%; share count -8.2% vs. the prior quarter.
Reported position value by quarter
Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.
| Date | Holding Value |
|---|---|
| 2021-09-30 | 26239000 |
| 2021-12-31 | 24681000 |
| 2022-03-31 | 20317000 |
| 2022-06-30 | 15643000 |
| 2022-09-30 | 15145000 |
| 2022-12-31 | 22958368 |
| 2023-03-31 | 21796435 |
| 2023-06-30 | 30266124 |
| 2023-09-30 | 22775573 |
| 2023-12-31 | 28882132 |
| 2024-03-31 | 27152617 |
| 2024-06-30 | 22559996 |
| 2024-09-30 | 29791354 |
| 2024-12-31 | 19615768 |
| 2025-03-31 | 18997106 |
| 2025-06-30 | 15647126 |
| 2025-09-30 | 13497408 |
| 2025-12-31 | 9472849 |
| 2026-03-31 | 6243770 |
| 2026-06-30 | 4779945 |
Quarterly position history
How this manager's reported quarter-end position changed over time.
| Quarter | Activity | Shares | Change | % of reported 13F | Reported value | Filed | Source filing |
|---|---|---|---|---|---|---|---|
| Q2 2026 | Reduced | 143,155 | -154,877 (-52.0%) | 0.02% | $4,779,945 | 2026-08-14 | |
| Q1 2026 | Reduced | 298,032 | -113,831 (-27.6%) | 0.03% | $6,243,770 | 2026-05-15 | |
| Q4 2025 | Reduced | 411,863 | -36,854 (-8.2%) | 0.04% | $9,472,849 | 2026-02-17 | |
| Q3 2025 | Added | 448,717 | +18,378 (4.3%) | 0.05% | $13,497,408 | 2025-11-14 | |
| Q2 2025 | Reduced | 430,339 | -94,298 (-18.0%) | 0.07% | $15,647,126 | 2025-08-14 | |
| Q1 2025 | Added | 524,637 | +58,372 (12.5%) | 0.11% | $18,997,106 | 2025-05-16 | |
| Q4 2024 | Reduced | 466,265 | -70,033 (-13.1%) | 0.09% | $19,615,768 | 2025-02-14 | |
| Q3 2024 | Reduced | 536,298 | -12,607 (-2.3%) | 0.14% | $29,791,354 | 2024-11-14 | |
| Q2 2024 | Reduced | 548,905 | -32,646 (-5.6%) | 0.11% | $22,559,996 | 2024-08-14 | |
| Q1 2024 | Reduced | 581,551 | -22,425 (-3.7%) | 0.13% | $27,152,617 | 2024-05-15 | |
| Q4 2023 | Reduced | 603,976 | -34,890 (-5.5%) | 0.16% | $28,882,132 | 2024-02-14 | |
| Q3 2023 | Reduced | 638,866 | -17,239 (-2.6%) | 0.13% | $22,775,573 | 2023-11-14 | |
| Q2 2023 | Added | 656,105 | +112,553 (20.7%) | 0.15% | $30,266,124 | 2023-08-14 | |
| Q1 2023 | Added | 543,552 | +48,012 (9.7%) | 0.12% | $21,796,435 | 2023-05-15 | |
| Q4 2022 | Added | 495,540 | +129,827 (35.5%) | 0.12% | $22,958,368 | 2023-02-14 | |
| Q3 2022 | Added | 365,713 | +103,512 (39.5%) | 0.08% | $15,145,000 | 2022-11-15 | |
| Q2 2022 | Reduced | 262,201 | -17,572 (-6.3%) | 0.07% | $15,643,000 | 2022-08-15 | |
| Q1 2022 | Reduced | 279,773 | -13,727 (-4.7%) | 0.06% | $20,317,000 | 2022-05-16 | |
| Q4 2021 | Added | 293,500 | +2,577 (0.9%) | 0.06% | $24,681,000 | 2022-02-14 | |
| Q3 2021 | Added | 290,923 | +99,491 (52.0%) | 0.06% | $26,239,000 | 2021-11-15 | |
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Who else reported the position
357 managers reported ULTRAGENYX PHARMACEUTICAL IN for Q4 2025.
| Manager | Activity | Shares | Change | % of reported 13F | Reported value | Tenure |
|---|---|---|---|---|---|---|
| VANGUARD GROUP INC | Added | 10,263,815 | +131,087 | < 0.01% | $236,067,745 | 48 qtrs |
| BlackRock Inc | Added | 6,631,554 | +206,291 | < 0.01% | $152,525,742 | 6 qtrs |
| STATE STREET CORPORATION | Added | 4,303,046 | +610,559 | < 0.01% | $98,970,058 | 48 qtrs |
| JPMorgan Chase & Co | Reduced | 3,974,030 | -37,399 | < 0.01% | $91,402,705 | 48 qtrs |
| SANDS CAPITAL MANAGEMENT LLC | Reduced | 3,485,724 | -284,129 | 0.24% | $80,171,652 | 11 qtrs |
| RTW INVESTMENTS LP | Reduced | 3,000,139 | -258,127 | 0.69% | $69,003,197 | 17 qtrs |
| BAKER BROS ADVISORS LP | Unchanged | 2,772,692 | 0 | 0.37% | $63,771,916 | 21 qtrs |
| FMR LLC | Reduced | 2,666,249 | -4,617,047 | < 0.01% | $61,323,732 | 48 qtrs |
| WELLINGTON MANAGEMENT GROUP LLP | Added | 2,461,910 | +516,781 | < 0.01% | $56,623,930 | 48 qtrs |
| CITADEL ADVISORS LLC | Added | 2,326,125 | +1,995,172 | < 0.01% | $53,500,875 | 48 qtrs |
Filing details and methodology As reported
- Report period
- December 31, 2025
- Filed
- February 17, 2026
- Filing type
- 13F-HR
- Position type
- Equity
Voting authority reported
- Sole
- 269,678
- Shared
- 0
- None
- 142,185
“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.
Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.