D. E. Shaw & Co., Inc. Amphastar Pharmaceuticals, Inc. Transaction History

D. E. Shaw & Co., Inc.

$156 Billion
Q3 2025

A detailed history of D. E. Shaw & Co., Inc. transactions in Amphastar Pharmaceuticals, Inc. stock. As of the latest transaction made, D. E. Shaw & Co., Inc. holds 517,222 shares of AMPH stock, worth $13.5 Million. This represents 0.01% of its overall portfolio holdings.

Number of Shares

517,222

Previous 293,928 75.97%

Holding current value

$13.5 Million

Previous $6.75 Million 104.25%

% of portfolio

0.01%

Previous 0.01%

18 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	BUY	$20.62 - $30.81 $4.6 Million - $6.88 Million	223,294 Added 75.97%	517,222 $13.8 Million
Q2 2025 Aug 14, 2025	BUY	$22.96 - $28.29 $6.08 Million - $7.49 Million	264,740 Added 907.02%	293,928 $6.75 Million
Q1 2025 May 15, 2025	SELL	$26.24 - $38.48 $2.35 Million - $3.45 Million	-89,663 Reduced 75.44%	29,188 $846,000
Q4 2024 Feb 14, 2025	BUY	$36.84 - $53.4 $3.51 Million - $5.08 Million	95,192 Added 402.35%	118,851 $4.41 Million
Q3 2024 Nov 14, 2024	BUY	$36.99 - $50.09 $875,146 - $1.19 Million	23,659 New	23,659 $1.15 Million
Q4 2023 Feb 14, 2024	SELL	$44.49 - $62.93 $1.03 Million - $1.45 Million	-23,093 Reduced 23.05%	77,080 $4.77 Million
Q3 2023 Nov 14, 2023	SELL	$45.51 - $65.0 $1.07 Million - $1.52 Million	-23,426 Reduced 18.95%	100,173 $4.61 Million
Q2 2023 Aug 14, 2023	SELL	$35.77 - $58.38 $490,549 - $800,623	-13,714 Reduced 9.99%	123,599 $7.1 Million
Q1 2023 May 15, 2023	BUY	$27.99 - $37.92 $2.22 Million - $3.01 Million	79,365 Added 136.96%	137,313 $5.15 Million
Q4 2022 Feb 14, 2023	BUY	$27.93 - $31.27 $1,927 - $2,157	69 Added 0.12%	57,948 $1.62 Million
Q3 2022 Nov 14, 2022	SELL	$27.56 - $37.75 $106,271 - $145,564	-3,856 Reduced 6.25%	57,879 $1.63 Million
Q2 2022 Aug 15, 2022	SELL	$29.79 - $42.29 $101,405 - $143,955	-3,404 Reduced 5.23%	61,735 $2.15 Million
Q1 2022 May 16, 2022	BUY	$22.96 - $36.45 $880,975 - $1.4 Million	38,370 Added 143.34%	65,139 $2.34 Million
Q4 2021 Feb 14, 2022	BUY	$18.14 - $23.29 $485,589 - $623,450	26,769 New	26,769 $623,000
Q3 2021 Nov 15, 2021	SELL	$17.83 - $21.49 $636,513 - $767,171	-35,699 Closed	0 $0
Q2 2021 Aug 16, 2021	BUY	$17.11 - $20.92 $306,628 - $374,907	17,921 Added 100.8%	35,699 $720,000
Q1 2021 May 17, 2021	BUY	$17.21 - $20.65 $84,174 - $100,999	4,891 Added 37.95%	17,778 $326,000
Q4 2020 Feb 16, 2021	BUY	$17.76 - $21.24 $228,873 - $273,719	12,887 New	12,887 $259,000

Others Institutions Holding AMPH

# of Institutions

271

Shares Held

33.9M

Call Options Held

76.6K

Put Options Held

13K

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 $1.28B
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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