RENAISSANCE TECHNOLOGIES LLC
Position in AMPH — Amphastar Pharmaceuticals, Inc.
CIK 1037389
NEW YORK, NY
Position in AMPH
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$10,596,518
-$254,383 QoQ
Shares Held
525,100
-5.2% QoQ
Ownership
1.23%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#12
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, 2026RENAISSANCE TECHNOLOGIES LLC holds $2,242,873,379 across 49 Drug Manufacturers - Specialty & Generic names. AMPH ranks #14 (0.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | UTHR |
UNITED THERAPEUTICS Corp
|
1,708,739 | $925,846,052 | |
| 2 | NBIX |
Neurocrine Biosciences Inc
|
2,335,897 | $393,692,080 | |
| 3 | ALKS |
Alkermes plc.
|
6,460,928 | $338,552,627 | |
| 4 | RDY |
Dr Reddys Laboratories Ltd
|
7,347,028 | $106,458,435 | |
| 5 | ZTS |
Zoetis Inc.
|
1,403,300 | $100,841,138 | |
| 6 | SUPN |
Supernus Pharmaceuticals, Inc.
|
1,478,180 | $68,750,151 | |
| 7 | COLL |
Collegium Pharmaceutical, Inc
|
1,366,549 | $49,469,073 | |
| 8 | PCRX |
Pacira BioSciences, Inc.
|
1,733,801 | $43,986,531 |
All Filings in AMPH
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $10,596,518 | 525,100 | Shares | Sole | 2026-08-13 | |
| 2026-03-31 | $10,850,901 | 553,900 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $14,587,066 | 544,700 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $15,640,885 | 586,900 | Shares | Sole | 2025-11-13 | |
| 2025-06-30 | $13,236,440 | 576,500 | Shares | Sole | 2025-08-13 | |
| 2025-03-31 | $14,350,050 | 495,000 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $19,511,815 | 525,500 | Shares | Sole | 2025-02-13 | |
| 2024-09-30 | $23,750,582 | 489,400 | Shares | Sole | 2024-11-13 | |
| 2024-06-30 | $21,508,000 | 537,700 | Shares | Sole | 2024-08-09 | |
| 2024-03-31 | $26,306,481 | 599,100 | Shares | Sole | 2024-05-13 | |
| 2023-12-31 | $39,701,515 | 641,900 | Shares | Sole | 2024-02-13 | |
| 2023-09-30 | $27,736,569 | 603,100 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $28,308,745 | 492,583 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $18,630,000 | 496,800 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $12,536,148 | 447,400 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $12,189,780 | 433,800 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $14,156,051 | 406,900 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $11,082,330 | 308,700 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $6,749,442 | 289,800 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $5,241,057 | 275,700 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $4,981,536 | 247,100 | Shares | Sole | 2021-08-13 | |
| 2021-03-31 | $4,132,992 | 225,600 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $6,286,386 | 312,600 | Shares | Sole | 2021-02-10 | |
| 2020-09-30 | $7,093,125 | 378,300 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $11,483,798 | 511,300 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $10,960,824 | 738,600 | Shares | Sole | 2020-05-14 | |
| No filing history on record for this holder in this stock. | ||||||