A detailed history of Bridgeway Capital Management, LLC transactions in Amphastar Pharmaceuticals, Inc. stock. As of the latest transaction made, Bridgeway Capital Management, LLC holds 312,337 shares of AMPH stock, worth $8.14 Million. This represents 0.19% of its overall portfolio holdings.

Number of Shares
312,337
Previous 85,112 266.97%
Holding current value
$8.14 Million
Previous $1.95 Million 325.95%
% of portfolio
0.19%
Previous 0.05%

Shares

2 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Nov 14, 2025

BUY
$20.62 - $30.81 $4.69 Million - $7 Million
227,225 Added 266.97%
312,337 $8.32 Million
Q2 2025

Aug 14, 2025

BUY
$22.96 - $28.29 $1.95 Million - $2.41 Million
85,112 New
85,112 $1.95 Million

Others Institutions Holding AMPH

About Amphastar Pharmaceuticals, Inc.


  • Ticker AMPH
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Drug Manufacturers—Specialty & Generic
  • Shares Outstandng 49,015,200
  • Market Cap $1.28B
  • Description
  • Amphastar Pharmaceuticals, Inc., a bio-pharmaceutical company, develops, manufactures, markets, and sells generic and proprietary injectable, inhalation, and intranasal products in the United States, China, and France. The company operates through two segments, Finished Pharmaceutical Products and API. It offers Primatene Mist, an over-the-count...
More about AMPH
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