CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Position in AMPH — Amphastar Pharmaceuticals, Inc.
CIK 884546
SAN FRANCISCO, CA
Position in AMPH
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$6,259,392
-$29,762 QoQ
Shares Held
310,178
-3.4% QoQ
Ownership
0.729%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#21
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, 2026CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $1,705,244,386 across 43 Drug Manufacturers - Specialty & Generic names. AMPH ranks #31 (0.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ZTS |
Zoetis Inc.
|
4,003,981 | $287,726,073 | |
| 2 | VTRS |
Viatris Inc
|
13,567,342 | $215,449,390 | |
| 3 | NBIX |
Neurocrine Biosciences Inc
|
974,279 | $164,204,982 | |
| 4 | UTHR |
UNITED THERAPEUTICS Corp
|
297,162 | $161,011,285 | |
| 5 | ALKS |
Alkermes plc.
|
2,335,117 | $122,360,130 | |
| 6 | ELAN |
Elanco Animal Health Inc
|
3,553,213 | $87,444,571 | |
| 7 | HIMS |
Hims & Hers Health, Inc.
|
2,453,787 | $85,072,795 | |
| 8 | LNTH |
Lantheus Holdings, Inc.
|
665,457 | $73,825,799 |
All Filings in AMPH
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $6,259,392 | 310,178 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $6,289,154 | 321,039 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $9,391,933 | 350,707 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $9,498,299 | 356,409 | Shares | Sole | 2025-11-10 | |
| 2025-06-30 | $7,962,160 | 346,784 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $9,457,291 | 326,226 | Shares | Sole | 2025-09-15 | |
| 2024-12-31 | $12,903,120 | 347,512 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $16,988,217 | 350,056 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $14,368,880 | 359,222 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $15,649,743 | 356,405 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $23,470,838 | 379,480 | Shares | Sole | 2024-02-06 | |
| 2023-09-30 | $16,205,864 | 352,378 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $18,865,217 | 328,262 | Shares | Sole | 2023-08-10 | |
| 2023-03-31 | $12,371,737 | 329,913 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $9,156,599 | 326,788 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $8,634,933 | 307,293 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $10,951,648 | 314,793 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $9,635,488 | 268,398 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $6,077,176 | 260,935 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $4,805,100 | 252,767 | Shares | Sole | 2021-11-16 | |
| 2021-06-30 | $5,108,281 | 253,387 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $4,541,509 | 247,899 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $4,869,596 | 242,148 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $4,446,225 | 237,132 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $5,123,148 | 228,101 | Shares | Sole | 2020-08-20 | |
| 2020-03-31 | $3,266,165 | 220,092 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||