Ken Griffin Amtech Systems Inc Transaction History

Citadel Advisors LLC

$550 Billion
Q2 2025

A detailed history of Ken Griffin (Citadel Advisors LLC) transactions in Amtech Systems Inc stock. As of the latest transaction made, Citadel Advisors LLC holds 18,300 shares of ASYS stock, worth $84,729. This represents 0.0% of its overall portfolio holdings.

Number of Shares

18,300

Previous 1,100 1563.64%

Holding current value

$84,729

Previous $5,000 1520.0%

% of portfolio

0.0%

Previous 0.0%

24 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Aug 14, 2025	SELL	$3.35 - $4.81 $21,815 - $31,322	-6,512 Reduced 14.66%	37,894 $168,000
Q1 2025 May 15, 2025	BUY	$4.77 - $5.7 $19,795 - $23,655	4,150 Added 10.31%	44,406 $214,000
Q4 2024 Feb 14, 2025	SELL	$5.42 - $6.01 $11,056 - $12,260	-2,040 Reduced 4.82%	40,256 $219,000
Q3 2024 Nov 14, 2024	BUY	$5.25 - $6.76 $39,154 - $50,416	7,458 Added 21.41%	42,296 $245,000
Q2 2024 Aug 14, 2024	SELL	$4.65 - $6.63 $146,833 - $209,355	-31,577 Reduced 47.54%	34,838 $204,000
Q1 2024 May 15, 2024	BUY	$3.44 - $5.41 $69,343 - $109,054	20,158 Added 43.58%	66,415 $359,000
Q4 2023 Feb 14, 2024	BUY	$3.69 - $8.0 $127,168 - $275,704	34,463 Added 292.21%	46,257 $194,000
Q3 2023 Nov 14, 2023	SELL	$7.32 - $10.91 $185,928 - $277,114	-25,400 Reduced 68.29%	11,794 $89,000
Q2 2023 Aug 14, 2023	SELL	$8.5 - $10.21 $65,373 - $78,525	-7,691 Reduced 17.13%	37,194 $355,000
Q1 2023 May 15, 2023	BUY	$7.98 - $11.18 $138,596 - $194,174	17,368 Added 63.12%	44,885 $428,000
Q4 2022 Feb 14, 2023	BUY	$7.54 - $11.05 $58,766 - $86,123	7,794 Added 39.52%	27,517 $209,000
Q3 2022 Nov 14, 2022	BUY	$6.87 - $12.93 $135,497 - $255,018	19,723 New	19,723 $168,000
Q3 2021 Nov 15, 2021	SELL	$8.88 - $12.5 $21,782 - $30,662	-2,453 Reduced 11.19%	19,460 $222,000
Q1 2021 May 17, 2021	BUY	$6.36 - $12.32 $139,366 - $269,968	21,913 New	21,913 $259,000
Q3 2020 Nov 16, 2020	SELL	$4.77 - $5.84 $48,520 - $59,404	-10,172 Closed	0 $0
Q2 2020 Aug 14, 2020	BUY	$4.25 - $5.49 $43,231 - $55,844	10,172 New	10,172 $50,000
Q2 2019 Aug 14, 2019	SELL	$5.1 - $6.97 $93,585 - $127,899	-18,350 Closed	0 $0
Q1 2019 May 15, 2019	SELL	$4.58 - $5.37 $4,296 - $5,037	-938 Reduced 4.86%	18,350 $0
Q4 2018 Feb 14, 2019	BUY	$4.03 - $5.69 $15,737 - $22,219	3,905 Added 25.39%	19,288 $87,000
Q3 2018 Nov 13, 2018	SELL	$4.64 - $6.16 $49,917 - $66,269	-10,758 Reduced 41.15%	15,383 $0
Q2 2018 Aug 10, 2018	SELL	$6.05 - $10.22 $158,812 - $268,275	-26,250 Reduced 50.1%	26,141 $0
Q1 2018 May 11, 2018	BUY	$6.93 - $11.37 $27,144 - $44,536	3,917 Added 8.08%	52,391 $383,000
Q4 2017 Feb 09, 2018	BUY	$9.45 - $15.25 $296,077 - $477,797	31,331 Added 182.76%	48,474 $488,000
Q3 2017 Nov 09, 2017	BUY	$9.27 - $12.3 $158,915 - $210,858	17,143	17,143 $205,000

Others Institutions Holding ASYS

# of Institutions

Shares Held

6.36M

Call Options Held

18.3K

Put Options Held

View Full List

About AMTECH SYSTEMS INC

Ticker ASYS
Exchange NASDAQ
Sector Technology
Industry Semiconductor Equipment & Materials
Shares Outstandng 13,889,300
Market Cap $64.3M
Description
Amtech Systems, Inc. manufactures and sells capital equipment and related consumables for use in fabricating silicon carbide (SiC), silicon power devices, analog and discrete devices, electronic assemblies, and light-emitting diodes (LEDs) worldwide. The company operates in Semiconductor and Material and Substrate segments. The Semiconductor seg...

More about ASYS

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