A detailed history of Voloridge Investment Management, LLC transactions in Amphastar Pharmaceuticals, Inc. stock. As of the latest transaction made, Voloridge Investment Management, LLC holds 123,445 shares of AMPH stock, worth $4.51 Million. This represents 0.02% of its overall portfolio holdings.

Number of Shares
123,445
Previous 201,473 38.73%
Holding current value
$4.51 Million
Previous $8.06 Million 25.66%
% of portfolio
0.02%
Previous 0.03%

Shares

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

Nov 14, 2024

SELL
$36.99 - $50.09 $2.89 Million - $3.91 Million
-78,028 Reduced 38.73%
123,445 $5.99 Million
Q2 2024

Aug 14, 2024

SELL
$38.65 - $43.48 $785,638 - $883,817
-20,327 Reduced 9.16%
201,473 $8.06 Million
Q1 2024

May 15, 2024

SELL
$42.85 - $63.45 $294,336 - $435,838
-6,869 Reduced 3.0%
221,800 $9.74 Million
Q4 2023

Feb 14, 2024

SELL
$44.49 - $62.93 $6.35 Million - $8.98 Million
-142,641 Reduced 38.42%
228,669 $14.1 Million
Q3 2023

Nov 14, 2023

BUY
$45.51 - $65.0 $8.35 Million - $11.9 Million
183,371 Added 97.57%
371,310 $17.1 Million
Q2 2023

Aug 14, 2023

BUY
$35.77 - $58.38 $4.11 Million - $6.71 Million
114,995 Added 157.65%
187,939 $10.8 Million
Q1 2023

May 15, 2023

SELL
$27.99 - $37.92 $606,739 - $821,991
-21,677 Reduced 22.91%
72,944 $2.74 Million
Q4 2022

Feb 14, 2023

SELL
$27.93 - $31.27 $1.89 Million - $2.12 Million
-67,637 Reduced 41.68%
94,621 $2.65 Million
Q3 2022

Nov 14, 2022

SELL
$27.56 - $37.75 $405,793 - $555,831
-14,724 Reduced 8.32%
162,258 $4.56 Million
Q2 2022

Aug 15, 2022

BUY
$29.79 - $42.29 $2.47 Million - $3.51 Million
82,912 Added 88.14%
176,982 $6.16 Million
Q1 2022

May 16, 2022

BUY
$22.96 - $36.45 $2.16 Million - $3.43 Million
94,070 New
94,070 $3.38 Million
Q4 2020

Feb 16, 2021

SELL
$17.76 - $21.24 $808,808 - $967,290
-45,541 Closed
0 $0
Q3 2020

Nov 16, 2020

BUY
$17.99 - $22.22 $819,282 - $1.01 Million
45,541 New
45,541 $854,000

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 $1.79B
  • 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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