A detailed history of Portolan Capital Management, LLC transactions in Amphastar Pharmaceuticals, Inc. stock. As of the latest transaction made, Portolan Capital Management, LLC holds 327,764 shares of AMPH stock, worth $12.8 Million. This represents 1.27% of its overall portfolio holdings.

Number of Shares
327,764
Previous 108,863 201.08%
Holding current value
$12.8 Million
Previous $4.35 Million 265.32%
% of portfolio
1.27%
Previous 0.39%

Shares

10 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2024

Nov 14, 2024

BUY
$36.99 - $50.09 $8.1 Million - $11 Million
218,901 Added 201.08%
327,764 $15.9 Million
Q2 2024

Aug 14, 2024

BUY
$38.65 - $43.48 $690,211 - $776,465
17,858 Added 19.62%
108,863 $4.35 Million
Q1 2024

May 15, 2024

SELL
$42.85 - $63.45 $2.46 Million - $3.64 Million
-57,411 Reduced 38.68%
91,005 $4 Million
Q4 2023

Feb 14, 2024

BUY
$44.49 - $62.93 $692,531 - $979,568
15,566 Added 11.72%
148,416 $9.18 Million
Q3 2023

Nov 14, 2023

SELL
$45.51 - $65.0 $2.25 Million - $3.21 Million
-49,393 Reduced 27.1%
132,850 $6.11 Million
Q2 2023

Aug 14, 2023

SELL
$35.77 - $58.38 $5.66 Million - $9.24 Million
-158,350 Reduced 46.49%
182,243 $10.5 Million
Q1 2023

May 15, 2023

BUY
$27.99 - $37.92 $1.95 Million - $2.65 Million
69,802 Added 25.78%
340,593 $12.8 Million
Q4 2022

Feb 13, 2023

SELL
$27.93 - $31.27 $318,290 - $356,352
-11,396 Reduced 4.04%
270,791 $7.59 Million
Q3 2022

Nov 14, 2022

BUY
$27.56 - $37.75 $201,132 - $275,499
7,298 Added 2.65%
282,187 $7.93 Million
Q2 2022

Aug 15, 2022

BUY
$29.79 - $42.29 $8.19 Million - $11.6 Million
274,889 New
274,889 $9.56 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 $1.92B
  • 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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