BRIDGEWAY CAPITAL MANAGEMENT, LLC
Position in AMPH — Amphastar Pharmaceuticals, Inc.
CIK 1107261
HOUSTON, TX
Position in AMPH
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$6,032,891
-$440,761 QoQ
Shares Held
298,954
-9.5% QoQ
Ownership
0.703%
of shares outstanding
% of Portfolio
0.11%
of 13F equity value
Holder Rank
#22
of 208 holders
Holding Since
Jun 2025
5 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, 2026BRIDGEWAY CAPITAL MANAGEMENT, LLC holds $34,784,557 across 16 Drug Manufacturers - Specialty & Generic names. AMPH ranks #3 (17.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | PCRX |
Pacira BioSciences, Inc.
|
411,373 | $10,436,533 | |
| 2 | PRGO |
PERRIGO Co plc
|
830,134 | $8,625,092 | |
| 3 | AMPH |
Amphastar Pharmaceuticals, Inc.
This page
|
298,954 | $6,032,891 | |
| 4 | AMRX |
Amneal Pharmaceuticals, Inc.
|
106,449 | $1,842,632 | |
| 5 | IRWD |
Ironwood Pharmaceuticals Inc
|
389,793 | $1,641,028 | |
| 6 | INDV |
Indivior Pharmaceuticals, Inc.
|
35,000 | $1,436,050 | |
| 7 | UTHR |
UNITED THERAPEUTICS Corp
|
2,620 | $1,419,594 | |
| 8 | BIOA |
BioAge Labs, Inc.
|
42,000 | $1,029,420 |
All Filings in AMPH
Export CSV
5 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $6,032,891 | 298,954 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $6,473,652 | 330,457 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $8,664,642 | 323,549 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $8,323,781 | 312,337 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $1,954,171 | 85,112 | Shares | Sole | 2025-08-14 | |
| No filing history on record for this holder in this stock. | ||||||