Jane Street
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Jane Street’s Amtech Systems ASYS Stock Holding History

Jane Street’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 		$5.76M Sell
249,465
-91,414
-27% -$1.74M ﹤0.01% 3505
2026
Q1 		$3.98M Buy
340,879
+15,125
+5% +$204K ﹤0.01% 3863
2025
Q4 		$4.09M Buy
325,754
+150,332
+86% +$1.35M ﹤0.01% 3548
2025
Q3 		$1.62M Buy
+175,422
New +$1.07M ﹤0.01% 5325

Other funds holding ASYS

ACM
AIGH Capital Management Baltimore, Maryland $1.59B AUM 855.46% 1-Year Est. Return
First Eagle Investment Management
First Eagle Investment Management New York $60.8B AUM 26.63% 1-Year Est. Return
BlackRock
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
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Jane Street's ASYS Position: Q2 2026 in Review

Jane Street reduced its Amtech Systems (ASYS) stake by 27% in Q2 2026, selling an estimated $1.74M and leaving 249,465 shares worth $5.76M. The position accounts for ﹤0.01% of the portfolio, ranked #3505.

Jane Street first reported a position in ASYS in Q3 2025 and has held it in 4 quarters since. 112 funds tracked by Wall St. Rank hold ASYS as of Q2 2026.

  • Jane Street held 249,465 shares of Amtech Systems worth $5.76M as of Q2 2026.
  • Jane Street sold 91,414 Amtech Systems shares in Q2 2026, an estimated $1.74M.
  • Amtech Systems made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #3505 holding.
  • Jane Street first reported a position in Amtech Systems in Q3 2025 and has held it in 4 quarters since.
  • 112 funds tracked by Wall St. Rank held Amtech Systems as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.