O'Shaughnessy Asset Management’s Amtech Systems ASYS Stock Holding History

O'Shaughnessy Asset Management’s Portfolio ASYS Stock Details ASYS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$592K	Sell	50,727 -10,236	-17%	-$138K	﹤0.01%	1452
2025 Q4	$765K	Buy	+60,963	New	+$549K	﹤0.01%	1274
2024 Q1	–	Sell	-13,104	Closed	-$55K	–	1877
2023 Q4	$55K	Sell	13,104 -9,515	-42%	-$64.6K	﹤0.01%	1545
2023 Q3	$172K	Sell	22,619 -11,578	-34%	-$105K	﹤0.01%	1309
2023 Q2	$327K	Buy	34,197 +11,007	+47%	+$100K	﹤0.01%	1029
2023 Q1	$221K	Buy	23,190 +10,693	+86%	+$100K	﹤0.01%	1173
2022 Q4	$95K	Buy	+12,497	New	+$113K	﹤0.01%	1205
2021 Q4	–	Sell	-4,587	Closed	-$52K	–	1336
2021 Q3	$52K	Sell	4,587 -136	-3%	-$1.39K	﹤0.01%	1624
2021 Q2	$46K	Sell	4,723 -871	-16%	-$8.93K	﹤0.01%	1601
2021 Q1	$66K	Sell	5,594 -8,535	-60%	-$79K	﹤0.01%	1326
2020 Q4	$90K	Sell	14,129 -10,051	-42%	-$59.8K	﹤0.01%	1102
2020 Q3	$118K	Sell	24,180 -478	-2%	-$2.46K	﹤0.01%	852
2020 Q2	$120K	Sell	24,658 -6,989	-22%	-$34.5K	﹤0.01%	792
2020 Q1	$138K	Buy	31,647 +3,896	+14%	+$21.9K	﹤0.01%	561
2019 Q4	$199K	Sell	27,751 -6,980	-20%	-$40.5K	﹤0.01%	611
2019 Q3	$184K	Sell	34,731 -1,348	-4%	-$7.39K	﹤0.01%	541
2019 Q2	$198K	Buy	+36,079	New	+$220K	﹤0.01%	544
2018 Q3	–	Sell	-8,189	Closed	-$50K	–	899
2018 Q2	$50K	Sell	8,189 -4,085	-33%	-$31.9K	﹤0.01%	712
2018 Q1	$90K	Sell	12,274 -9,327	-43%	-$84K	﹤0.01%	646
2017 Q4	$218K	Buy	21,601 +6,215	+40%	+$76K	0.01%	515
2017 Q3	$184K	Buy	+15,386	New	+$155K	﹤0.01%	528

Other funds holding ASYS

First Eagle Investment Management New York $59B AUM 32.99% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

PRCP

Pacific Ridge Capital Partners Lake Oswego, Oregon $462M AUM 40.76% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return

Jane Street New York $777B AUM 61.18% 1-Year Est. Return

Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

O'Shaughnessy Asset Management's ASYS Position: Q1 2026 in Review

O'Shaughnessy Asset Management reduced its Amtech Systems (ASYS) stake by 17% in Q1 2026, selling an estimated $138K and leaving 50,727 shares worth $592K. The position accounts for ﹤0.01% of the portfolio, ranked #1452.

O'Shaughnessy Asset Management first reported a position in ASYS in Q3 2017 and has held it in 21 quarters since. The position peaked at $765K in Q4 2025. 79 funds tracked by Wall St. Rank hold ASYS as of Q1 2026.

O'Shaughnessy Asset Management held 50,727 shares of Amtech Systems worth $592K as of Q1 2026.
O'Shaughnessy Asset Management sold 10,236 Amtech Systems shares in Q1 2026, an estimated $138K.
Amtech Systems made up ﹤0.01% of O'Shaughnessy Asset Management's portfolio in Q1 2026, its #1452 holding.
O'Shaughnessy Asset Management first reported a position in Amtech Systems in Q3 2017 and has held it in 21 quarters since.
O'Shaughnessy Asset Management's Amtech Systems position peaked at $765K in Q4 2025.
79 funds tracked by Wall St. Rank held Amtech Systems as of Q1 2026.

Based on O'Shaughnessy Asset Management's 13F filing for Q1 2026, filed 13 May 2026.