Jeff Yass’s Amtech Systems ASYS Stock Holding History

Jeff Yass’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	$824K	Buy	35,700 +15,000	+72%	+$285K	﹤0.01%	8709
2026 Q1	$242K	Sell	20,700 -86,800	-81%	-$1.17M	﹤0.01%	11338
2025 Q4	$1.35M	Buy	107,500 +69,300	+181%	+$624K	﹤0.01%	6497
2025 Q3	$354K	Buy	+38,200	New	+$233K	﹤0.01%	9734
2024 Q3	–	Sell	-11,900	Closed	-$69.7K	–	11914
2024 Q2	$69.7K	Sell	11,900 -5,500	-32%	-$29.7K	﹤0.01%	11249
2024 Q1	$94.1K	Buy	+17,400	New	+$78.4K	﹤0.01%	11255
2021 Q3	–	Sell	-22,500	Closed	-$217K	–	12705
2021 Q2	$217K	Sell	22,500 -4,500	-17%	-$46.2K	﹤0.01%	11424
2021 Q1	$319K	Buy	+27,000	New	+$250K	﹤0.01%	10475
2018 Q4	–	Sell	-12,000	Closed	-$64K	–	8895
2018 Q3	$64K	Buy	+12,000	New	+$65.8K	﹤0.01%	8765
2018 Q2	–	Sell	-12,600	Closed	-$92K	–	9575
2018 Q1	$92K	Buy	+12,600	New	+$113K	﹤0.01%	8733

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 $59.9B AUM 27.01% 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

Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

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

Jeff Yass's ASYS Position: Q2 2026 in Review

Jeff Yass reduced its Amtech Systems (ASYS) stake by 68% in Q2 2026, selling an estimated $1.73M and leaving 42,842 shares worth $989K. The position accounts for ﹤0.01% of the portfolio, ranked #8229.

Jeff Yass first reported a position in ASYS in Q4 2017 and has held it in 23 quarters since. The position peaked at $1.56M in Q1 2026. 111 funds tracked by Wall St. Rank hold ASYS as of Q2 2026.

Jeff Yass held 42,842 shares of Amtech Systems worth $989K as of Q2 2026.
Jeff Yass sold 91,096 Amtech Systems shares in Q2 2026, an estimated $1.73M.
Amtech Systems made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #8229 holding.
Jeff Yass first reported a position in Amtech Systems in Q4 2017 and has held it in 23 quarters since.
Jeff Yass's Amtech Systems position peaked at $1.56M in Q1 2026.
111 funds tracked by Wall St. Rank held Amtech Systems as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.