AQR CAPITAL MANAGEMENT LLC
Position in RARE — Ultragenyx Pharmaceutical Inc.
CIK 1167557
Greenwich, CT
Position in RARE
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$95,909,598
+$64,618,167 QoQ
Shares Held
4,578,024
+236.5% QoQ
Ownership
4.65%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
19 quarters on record
Voting authority
Sole 97.21644097977644.ToString("F0")%
Shared 0.ToString("F0")%
None 2.7835590202235725.ToString("F0")%
Common Shares in RARE Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026AQR CAPITAL MANAGEMENT LLC holds $4,606,642,545 across 213 Biotechnology names. RARE ranks #11 (2.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | REGN |
Regeneron Pharmaceuticals, Inc.
|
1,231,008 | $951,126,014 | |
| 2 | EXEL |
Exelixis, Inc.
|
13,095,741 | $561,676,326 | |
| 3 | INCY |
Incyte Corp
|
5,807,930 | $546,642,368 | |
| 4 | BMRN |
Biomarin Pharmaceutical Inc
|
7,676,541 | $433,647,798 | |
| 5 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
913,104 | $302,118,715 | |
| 6 | JAZZ |
Jazz Pharmaceuticals plc
|
1,338,458 | $253,035,481 | |
| 7 | RPRX |
Royalty Pharma plc
|
3,782,038 | $181,424,357 | |
| 8 | ROIV |
Roivant Sciences Ltd.
|
5,946,858 | $164,727,963 |
All Filings in RARE
Export CSV
19 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $95,909,598 | 4,578,024 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $31,291,431 | 1,360,497 | Shares | Other | 2026-02-17 | |
| 2025-09-30 | $22,445,153 | 746,182 | Shares | Other | 2025-11-14 | |
| 2025-06-30 | $9,174,825 | 252,333 | Shares | Other | 2025-08-14 | |
| 2025-03-31 | $3,333,020 | 92,047 | Shares | Other | 2025-05-15 | |
| 2024-12-31 | $11,802,612 | 280,547 | Shares | Other | 2025-02-14 | |
| 2024-09-30 | $58,014,918 | 1,044,373 | Shares | Other | 2024-11-14 | |
| 2024-06-30 | $3,990,809 | 97,100 | Shares | Other | 2024-08-14 | |
| 2024-03-31 | $11,728,386 | 251,197 | Shares | Other | 2024-05-15 | |
| 2023-12-31 | $8,162,347 | 170,689 | Shares | Defined | 2024-02-14 | |
| 2023-03-31 | $1,440,031 | 35,911 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $737,295 | 15,914 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $423,293 | 10,222 | Shares | Defined | 2022-11-14 | |
| 2021-06-30 | $905,825 | 9,500 | Shares | Defined | 2021-08-16 | |
| 2021-03-31 | $3,277,346 | 28,784 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $5,262,831 | 38,018 | Shares | Defined | 2021-02-16 | |
| 2020-09-30 | $2,388,359 | 29,059 | Shares | Defined | 2020-11-16 | |
| 2020-06-30 | $2,149,720 | 27,483 | Shares | Defined | 2020-08-17 | |
| 2020-03-31 | $1,050,636 | 23,647 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||