Dimensional Fund Advisors LP Amphastar Pharmaceuticals, Inc. Transaction History

Dimensional Fund Advisors LP

$391 Billion
Q1 2025

A detailed history of Dimensional Fund Advisors LP transactions in Amphastar Pharmaceuticals, Inc. stock. As of the latest transaction made, Dimensional Fund Advisors LP holds 1,356,360 shares of AMPH stock, worth $34.1 Million. This represents 0.01% of its overall portfolio holdings.

Number of Shares

1,356,360

Previous 1,198,590 13.16%

Holding current value

$34.1 Million

Previous $44.5 Million 11.65%

% of portfolio

0.01%

Previous 0.01%

18 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q1 2025 May 13, 2025	BUY	$26.24 - $38.48 $4.14 Million - $6.07 Million	157,770 Added 13.16%	1,356,360 $39.3 Million
Q4 2024 Feb 13, 2025	BUY	$36.84 - $53.4 $3.88 Million - $5.62 Million	105,288 Added 9.63%	1,198,590 $44.5 Million
Q3 2024 Nov 07, 2024	BUY	$36.99 - $50.09 $851,768 - $1.15 Million	23,027 Added 2.15%	1,093,302 $53.1 Million
Q2 2024 Aug 09, 2024	SELL	$38.65 - $43.48 $4.39 Million - $4.94 Million	-113,555 Reduced 9.59%	1,070,275 $42.8 Million
Q1 2024 May 10, 2024	SELL	$42.85 - $63.45 $6.66 Million - $9.85 Million	-155,312 Reduced 11.6%	1,183,830 $52 Million
Q4 2023 Feb 07, 2024	SELL	$44.49 - $62.93 $24.4 Million - $34.5 Million	-548,596 Reduced 29.06%	1,339,142 $82.8 Million
Q3 2023 Nov 09, 2023	SELL	$45.51 - $65.0 $1.95 Million - $2.79 Million	-42,877 Reduced 2.22%	1,887,738 $86.8 Million
Q2 2023 Aug 09, 2023	BUY	$35.77 - $58.38 $466,583 - $761,508	13,044 Added 0.68%	1,930,615 $111 Million
Q1 2023 May 12, 2023	BUY	$27.99 - $37.92 $1.43 Million - $1.93 Million	51,027 Added 2.73%	1,917,571 $71.9 Million
Q4 2022 Feb 09, 2023	BUY	$27.93 - $31.27 $765,561 - $857,110	27,410 Added 1.49%	1,866,544 $52.3 Million
Q3 2022 Nov 10, 2022	BUY	$27.56 - $37.75 $360,787 - $494,185	13,091 Added 0.72%	1,839,134 $51.7 Million
Q2 2022 Aug 12, 2022	BUY	$29.79 - $42.29 $886,967 - $1.26 Million	29,774 Added 1.66%	1,826,043 $63.5 Million
Q1 2022 May 13, 2022	BUY	$22.96 - $36.45 $583,597 - $926,486	25,418 Added 1.44%	1,796,269 $64.5 Million
Q4 2021 Feb 09, 2022	BUY	$18.14 - $23.29 $470,479 - $604,049	25,936 Added 1.49%	1,770,851 $41.2 Million
Q3 2021 Nov 12, 2021	BUY	$17.83 - $21.49 $874,062 - $1.05 Million	49,022 Added 2.89%	1,744,915 $33.2 Million
Q2 2021 Aug 12, 2021	BUY	$17.11 - $20.92 $116,416 - $142,339	6,804 Added 0.4%	1,695,893 $34.2 Million
Q1 2021 May 14, 2021	SELL	$17.21 - $20.65 $2.04 Million - $2.44 Million	-118,296 Reduced 6.55%	1,689,089 $31 Million
Q4 2020 Feb 25, 2021	BUY	$17.76 - $21.24 $32.1 Million - $38.4 Million	1,807,385 New	1,807,385 $36.3 Million

Others Institutions Holding AMPH

# of Institutions

264

Shares Held

33.9M

Call Options Held

26.5K

Put Options Held

7.9K

View Full List

About Amphastar Pharmaceuticals, Inc.

Ticker AMPH
Exchange NASDAQ
Sector Healthcare
Industry Drug Manufacturers—Specialty & Generic
Shares Outstandng 49,015,200
Market Cap $1.23B
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...

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Dimensional Fund Advisors LP Amphastar Pharmaceuticals, Inc. Transaction History