NOVATO, CA
ULTRAGENYX PHARMACEUTICAL INC.RARE— Latest position per institution from SEC 13F filings
15
Institutional holders
77.36M
Total shares held
1.77B
Estimated value
3.87M
Avg. position size
VANGUARD GROUP INC
CIK 102909
Shares
10.26M
Value
236.07M
Filed
Dec 31, 2025
BLACKROCK, INC.
CIK 2012383
Shares
7.30M
Value
152.93M
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
5.60M
Value
230.30M
Filed
Jun 30, 2024
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
5.39M
Value
112.84M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
5.02M
Value
105.20M
Filed
Mar 31, 2026
AQR CAPITAL MANAGEMENT LLC
CIK 1167557
Shares
4.58M
Value
95.91M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
4.19M
Value
87.78M
Filed
Mar 31, 2026
JPMORGAN CHASE & CO
CIK 19617
Shares
3.97M
Value
91.40M
Filed
Dec 31, 2025
RTW INVESTMENTS, LP
CIK 1493215
Shares
3.65M
Value
76.44M
Filed
Mar 31, 2026
SOFINNOVA INVESTMENTS, INC.
CIK 1631134
Shares
3.50M
Value
73.24M
Filed
Mar 31, 2026
SANDS CAPITAL MANAGEMENT, LLC
CIK 1020066
Shares
3.21M
Value
67.34M
Filed
Mar 31, 2026
BAKER BROS. ADVISORS LP
CIK 1263508
Shares
2.77M
Value
63.77M
Filed
Dec 31, 2025
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
2.64M
Value
55.33M
Filed
Mar 31, 2026
BELLEVUE GROUP AG
CIK 1674546
Shares
2.38M
Value
49.86M
Filed
Mar 31, 2026
CITADEL ADVISORS LLC
CIK 1423053
Shares
2.37M
Value
49.68M
Filed
Mar 31, 2026
ASSENAGON ASSET MANAGEMENT S.A.
CIK 1546007
Shares
2.26M
Value
47.30M
Filed
Mar 31, 2026
TWO SIGMA INVESTMENTS, LP
CIK 1179392
Shares
2.21M
Value
46.21M
Filed
Mar 31, 2026
FRONTIER CAPITAL MANAGEMENT CO LLC
CIK 351173
Shares
2.19M
Value
45.91M
Filed
Mar 31, 2026
SUVRETTA CAPITAL MANAGEMENT, LLC
CIK 1569064
Shares
2.02M
Value
46.44M
Filed
Dec 31, 2025
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.85M
Value
38.75M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | 102909 | 10.26M | 236.07M | Dec 31, 2025 |
| 2 | BLACKROCK, INC. | 2012383 | 7.30M | 152.93M | Mar 31, 2026 |
| 3 | BLACKROCK FINANCE, INC. | 1364742 | 5.60M | 230.30M | Jun 30, 2024 |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 5.39M | 112.84M | Mar 31, 2026 |
| 5 | STATE STREET CORP | 93751 | 5.02M | 105.20M | Mar 31, 2026 |
| 6 | AQR CAPITAL MANAGEMENT LLC | 1167557 | 4.58M | 95.91M | Mar 31, 2026 |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 4.19M | 87.78M | Mar 31, 2026 |
| 8 | JPMORGAN CHASE & CO | 19617 | 3.97M | 91.40M | Dec 31, 2025 |
| 9 | RTW INVESTMENTS, LP | 1493215 | 3.65M | 76.44M | Mar 31, 2026 |
| 10 | SOFINNOVA INVESTMENTS, INC. | 1631134 | 3.50M | 73.24M | Mar 31, 2026 |
| 11 | SANDS CAPITAL MANAGEMENT, LLC | 1020066 | 3.21M | 67.34M | Mar 31, 2026 |
| 12 | BAKER BROS. ADVISORS LP | 1263508 | 2.77M | 63.77M | Dec 31, 2025 |
| 13 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 2.64M | 55.33M | Mar 31, 2026 |
| 14 | BELLEVUE GROUP AG | 1674546 | 2.38M | 49.86M | Mar 31, 2026 |
| 15 | CITADEL ADVISORS LLC | 1423053 | 2.37M | 49.68M | Mar 31, 2026 |
| 16 | ASSENAGON ASSET MANAGEMENT S.A. | 1546007 | 2.26M | 47.30M | Mar 31, 2026 |
| 17 | TWO SIGMA INVESTMENTS, LP | 1179392 | 2.21M | 46.21M | Mar 31, 2026 |
| 18 | FRONTIER CAPITAL MANAGEMENT CO LLC | 351173 | 2.19M | 45.91M | Mar 31, 2026 |
| 19 | SUVRETTA CAPITAL MANAGEMENT, LLC | 1569064 | 2.02M | 46.44M | Dec 31, 2025 |
| 20 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.85M | 38.75M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.