Simplex Trading, LLC Amphastar Pharmaceuticals, Inc. Transaction History

Simplex Trading, LLC

$195 Billion
Q3 2025

A detailed history of Simplex Trading, LLC transactions in Amphastar Pharmaceuticals, Inc. stock. As of the latest transaction made, Simplex Trading, LLC holds 274 shares of AMPH stock, worth $7,140. This represents 0.0% of its overall portfolio holdings.

Number of Shares

274

Previous 1,379 80.13%

Holding current value

$7,140

Previous $31,000 77.42%

% of portfolio

0.0%

Previous 0.0%

19 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 12, 2025	SELL	$20.62 - $30.81 $22,785 - $34,045	-1,105 Reduced 80.13%	274 $7,000
Q2 2025 Aug 05, 2025	BUY	$22.96 - $28.29 $31,661 - $39,011	1,379 New	1,379 $31,000
Q4 2024 Feb 11, 2025	BUY	$36.84 - $53.4 $20,188 - $29,263	548 New	548 $20,000
Q2 2024 Jul 25, 2024	BUY	$38.65 - $43.48 $31,499 - $35,436	815 New	815 $32,000
Q2 2023 Aug 04, 2023	BUY	$35.77 - $58.38 $7,010 - $11,442	196 New	196 $11,000

Q4 2022 Feb 02, 2023	BUY	$27.93 - $31.27 $7,792 - $8,724	279 New	279 $7,000
Q2 2021 Aug 12, 2021	BUY	$17.11 - $20.92 $13,688 - $16,736	800 New	800 $16,000
Q4 2020 Feb 02, 2021	SELL	$17.76 - $21.24 $11,153 - $13,338	-628 Closed	0 $0
Q3 2020 Oct 14, 2020	BUY	$17.99 - $22.22 $9,498 - $11,732	528 Added 528.0%	628 $11,000
Q2 2020 Jul 13, 2020	BUY	$14.25 - $22.46 $1,425 - $2,246	100 New	100 $2,000
Q4 2019 Feb 05, 2020	SELL	$17.07 - $20.64 $9,422 - $11,393	-552 Closed	0 $0
Q3 2019 Oct 15, 2019	SELL	$19.12 - $22.62 $5,908 - $6,989	-309 Reduced 35.89%	552 $10,000
Q2 2019 Jul 26, 2019	BUY	$18.92 - $22.96 $16,290 - $19,768	861 New	861 $18,000
Q1 2019 Apr 18, 2019	SELL	$19.46 - $25.28 $10,099 - $13,120	-519 Closed	0 $0
Q4 2018 Jan 16, 2019	BUY	$17.72 - $22.51 $1,204 - $1,530	68 Added 15.08%	519 $10,000
Q3 2018 Oct 23, 2018	BUY	$15.39 - $19.38 $1,154 - $1,453	75 Added 19.95%	451 $8,000
Q2 2018 Jul 30, 2018	BUY	$14.63 - $19.6 $5,500 - $7,369	376 New	376 $5,000
Q4 2017 Jan 10, 2018	SELL	$17.76 - $19.75 $35,076 - $39,006	-1,975 Closed	0 $0
Q3 2017 Oct 25, 2017	BUY	$14.73 - $17.99 $29,091 - $35,530	1,975	1,975 $35,000

Others Institutions Holding AMPH

# of Institutions

262

Shares Held

33.5M

Call Options Held

73.4K

Put Options Held

12.6K

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...

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Simplex Trading, LLC Amphastar Pharmaceuticals, Inc. Transaction History