Essex Investment Management’s Amtech Systems ASYS Stock Holding History

Essex Investment 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	$442K	Hold	37,816	–	–	0.07%	174
2025 Q4	$475K	Hold	37,816	–	–	0.07%	170
2025 Q3	$350K	Buy	+37,816	New	+$231K	0.05%	177
2024 Q1	–	Sell	-143,375	Closed	-$602K	–	311
2023 Q4	$602K	Sell	143,375 -204,062	-59%	-$1.39M	0.12%	169
2023 Q3	$2.65M	Sell	347,437 -7,063	-2%	-$64.2K	0.43%	79
2023 Q2	$3.39M	Buy	354,500 +42,682	+14%	+$388K	0.47%	62
2023 Q1	$2.97M	Buy	311,818 +45,157	+17%	+$424K	0.43%	78
2022 Q4	$2.03M	Sell	266,661 -2,344	-0.9%	-$21.2K	0.32%	100
2022 Q3	$2.29M	Buy	269,005 +7,384	+3%	+$68K	0.37%	83
2022 Q2	$1.91M	Buy	261,621 +8,810	+3%	+$76.1K	0.31%	97
2022 Q1	$2.54M	Buy	252,811 +11,691	+5%	+$112K	0.32%	95
2021 Q4	$2.38M	Buy	241,120 +18,123	+8%	+$209K	0.27%	115
2021 Q3	$2.55M	Buy	222,997 +24,752	+12%	+$254K	0.31%	101
2021 Q2	$1.91M	Buy	198,245 +51,041	+35%	+$523K	0.22%	153
2021 Q1	$1.74M	Sell	147,204 -15,651	-10%	-$145K	0.21%	160
2020 Q4	$1.04M	Buy	+162,855	New	+$968K	0.13%	222

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

Essex Investment Management's ASYS Position: Q1 2026 in Review

Essex Investment Management held its Amtech Systems (ASYS) position steady in Q1 2026 at 37,816 shares worth $442K. The position accounts for 0.07% of the portfolio, ranked #174.

Essex Investment Management first reported a position in ASYS in Q4 2020 and has held it in 16 quarters since. The position peaked at $3.39M in Q2 2023. 79 funds tracked by Wall St. Rank hold ASYS as of Q1 2026.

Essex Investment Management held 37,816 shares of Amtech Systems worth $442K as of Q1 2026.
Essex Investment Management left its Amtech Systems share count unchanged in Q1 2026.
Amtech Systems made up 0.07% of Essex Investment Management's portfolio in Q1 2026, its #174 holding.
Essex Investment Management first reported a position in Amtech Systems in Q4 2020 and has held it in 16 quarters since.
Essex Investment Management's Amtech Systems position peaked at $3.39M in Q2 2023.
79 funds tracked by Wall St. Rank held Amtech Systems as of Q1 2026.

Based on Essex Investment Management's 13F filing for Q1 2026, filed 11 May 2026.