AQR CAPITAL MANAGEMENT LLC
Position in AMPH — Amphastar Pharmaceuticals, Inc.
CIK 1167557
Greenwich, CT
Position in AMPH
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$4,210,575
+$2,667,315 QoQ
Shares Held
208,651
+164.9% QoQ
Ownership
0.491%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#29
of 209 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in AMPH Over Time
Shares Held
Position Value (USD)
Position in Drug Manufacturers - Specialty & Generic
Healthcare · as of Jun 30, 2026AQR CAPITAL MANAGEMENT LLC holds $1,405,033,456 across 42 Drug Manufacturers - Specialty & Generic names. AMPH ranks #25 (0.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | NBIX |
Neurocrine Biosciences Inc
|
3,818,037 | $643,491,951 | |
| 2 | UTHR |
UNITED THERAPEUTICS Corp
|
546,002 | $295,840,259 | |
| 3 | ZTS |
Zoetis Inc.
|
1,070,929 | $76,956,955 | |
| 4 | VTRS |
Viatris Inc
|
4,694,966 | $74,556,056 | |
| 5 | PRGO |
PERRIGO Co plc
|
3,480,666 | $36,164,117 | |
| 6 | LNTH |
Lantheus Holdings, Inc.
|
261,250 | $28,983,071 | |
| 7 | IRWD |
Ironwood Pharmaceuticals Inc
|
6,465,921 | $27,221,524 | |
| 8 | TAK |
Takeda Pharmaceutical Co Ltd
|
1,525,686 | $24,456,745 |
All Filings in AMPH
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $4,210,575 | 208,651 | Shares | Other | 2026-08-14 | |
| 2026-03-31 | $1,543,260 | 78,778 | Shares | Other | 2026-05-15 | |
| 2025-12-31 | $1,811,718 | 67,652 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $1,656,162 | 62,145 | Shares | Other | 2025-11-14 | |
| 2025-06-30 | $1,741,398 | 75,845 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $1,554,963 | 53,638 | Shares | Other | 2025-05-15 | |
| 2024-12-31 | $1,094,257 | 29,471 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $2,022,098 | 41,667 | Shares | Other | 2024-11-14 | |
| 2024-06-30 | $2,231,840 | 55,796 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $2,505,240 | 57,054 | Shares | Other | 2024-05-15 | |
| 2023-12-31 | $788,216 | 12,744 | Shares | Defined | 2024-02-14 | |
| 2023-09-30 | $1,333,250 | 28,990 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $3,392,798 | 59,036 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $4,158,262 | 110,887 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $3,155,136 | 112,603 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $2,662,559 | 94,753 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $1,227,739 | 35,290 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $484,614 | 13,499 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $246,291 | 10,575 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $366,455 | 19,277 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $400,538 | 19,868 | Shares | Defined | 2021-08-16 | |
| 2021-03-31 | $449,224 | 24,521 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $736,951 | 36,646 | Shares | Defined | 2021-02-16 | |
| 2020-09-30 | $983,906 | 52,475 | Shares | Defined | 2020-11-16 | |
| 2020-06-30 | $1,706,353 | 75,973 | Shares | Defined | 2020-08-17 | |
| 2020-03-31 | $1,318,474 | 88,846 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||