O'SHAUGHNESSY ASSET MANAGEMENT, LLC
Position in AMPH — Amphastar Pharmaceuticals, Inc.
CIK 1423442
Stamford, CT
Position in AMPH
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$3,217,236
+$1,181,267 QoQ
Shares Held
159,427
+53.4% QoQ
Ownership
0.375%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#34
of 208 holders
Holding Since
Dec 2023
6 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, 2026O'SHAUGHNESSY ASSET MANAGEMENT, LLC holds $64,291,492 across 20 Drug Manufacturers - Specialty & Generic names. AMPH ranks #7 (5.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ZTS |
Zoetis Inc.
|
203,773 | $14,643,127 | |
| 2 | VTRS |
Viatris Inc
|
495,260 | $7,864,728 | |
| 3 | INDV |
Indivior Pharmaceuticals, Inc.
|
171,948 | $7,055,026 | |
| 4 | TEVA |
Teva Pharmaceutical Industries Ltd
|
142,308 | $4,821,395 | |
| 5 | BHC |
Bausch Health Companies Inc.
|
753,006 | $3,712,319 | |
| 6 | EBS |
Emergent BioSolutions Inc.
|
440,423 | $3,690,744 | |
| 7 | AMPH |
Amphastar Pharmaceuticals, Inc.
This page
|
159,427 | $3,217,236 | |
| 8 | TAK |
Takeda Pharmaceutical Co Ltd
|
191,537 | $3,070,338 |
All Filings in AMPH
Export CSV
6 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $3,217,236 | 159,427 | Shares | Sole | 2026-08-13 | |
| 2026-03-31 | $2,035,969 | 103,929 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $2,334,760 | 87,183 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $1,840,395 | 69,058 | Shares | Sole | 2025-11-13 | |
| 2025-06-30 | $925,494 | 40,309 | Shares | Sole | 2025-08-12 | |
| 2023-12-31 | $261,501 | 4,228 | Shares | Sole | 2024-02-09 | |
| No filing history on record for this holder in this stock. | ||||||