Arrowstreet Capital’s Amtech Systems ASYS Stock Holding History

Arrowstreet Capital’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 Q2	$7.13M	Sell	308,896 -56,491	-15%	-$1.07M	﹤0.01%	1192
2026 Q1	$4.27M	Buy	365,387 +18,354	+5%	+$247K	﹤0.01%	1204
2025 Q4	$4.36M	Buy	347,033 +164,604	+90%	+$1.48M	﹤0.01%	1174
2025 Q3	$1.69M	Buy	+182,429	New	+$1.11M	﹤0.01%	1484
2022 Q1	–	Sell	-135,814	Closed	-$1.34M	–	1185
2021 Q4	$1.34M	Sell	135,814 -2,797	-2%	-$32.3K	﹤0.01%	1099
2021 Q3	$1.58M	Hold	138,611	–	–	﹤0.01%	1187
2021 Q2	$1.34M	Buy	138,611 +27,988	+25%	+$287K	﹤0.01%	1456
2021 Q1	$1.31M	Buy	110,623 +47,623	+76%	+$441K	﹤0.01%	1712
2020 Q4	$402K	Hold	63,000	–	–	﹤0.01%	2062
2020 Q3	$308K	Buy	63,000 +22,300	+55%	+$115K	﹤0.01%	2135
2020 Q2	$198K	Hold	40,700	–	–	﹤0.01%	2172
2020 Q1	$177K	Buy	40,700 +28,500	+234%	+$160K	﹤0.01%	1746
2019 Q4	$87K	Buy	+12,200	New	+$70.7K	﹤0.01%	1673
2018 Q2	–	Sell	-59,972	Closed	-$439K	–	1073
2018 Q1	$439K	Buy	59,972 +6,025	+11%	+$54.2K	﹤0.01%	970
2017 Q4	$543K	Buy	+53,947	New	+$659K	﹤0.01%	1060

Other funds holding ASYS

ACM

AIGH Capital Management Baltimore, Maryland $1.59B AUM 855.46% 1-Year Est. Return

First Eagle Investment Management New York $60.8B AUM 26.63% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

AIC

AWM Investment Company New York $1.15B AUM 201.65% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Connor, Clark & Lunn Investment Management (CC&L) Vancouver, British Columbia, Canada $52.8B AUM 58.98% 1-Year Est. Return

Arrowstreet Capital's ASYS Position: Q2 2026 in Review

Arrowstreet Capital reduced its Amtech Systems (ASYS) stake by 15% in Q2 2026, selling an estimated $1.07M and leaving 308,896 shares worth $7.13M. The position accounts for ﹤0.01% of the portfolio, ranked #1192.

Arrowstreet Capital first reported a position in ASYS in Q4 2017 and has held it in 15 quarters since. 112 funds tracked by Wall St. Rank hold ASYS as of Q2 2026.

Arrowstreet Capital held 308,896 shares of Amtech Systems worth $7.13M as of Q2 2026.
Arrowstreet Capital sold 56,491 Amtech Systems shares in Q2 2026, an estimated $1.07M.
Amtech Systems made up ﹤0.01% of Arrowstreet Capital's portfolio in Q2 2026, its #1192 holding.
Arrowstreet Capital first reported a position in Amtech Systems in Q4 2017 and has held it in 15 quarters since.
112 funds tracked by Wall St. Rank held Amtech Systems as of Q2 2026.

Based on Arrowstreet Capital's 13F filing for Q2 2026, filed 13 Aug 2026.