Group One Trading
ASYS icon

Group One Trading’s Amtech Systems ASYS Stock Holding History

Group One Trading’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 		$38.7K Sell
3,311
-4,238
-56% -$57.1K ﹤0.01% 5459
2025
Q4 		$94.7K Buy
7,549
+5,525
+273% +$49.8K ﹤0.01% 5052
2025
Q3 		$18.7K Buy
+2,024
New +$12.4K ﹤0.01% 6740
2024
Q2 		– Sell
-1,052
Closed -$5.69K – 6681
2024
Q1 		$5.69K Sell
1,052
-1,000
-49% -$4.5K ﹤0.01% 6129
2023
Q4 		$8.62K Buy
+2,052
New +$13.9K ﹤0.01% 6279
2021
Q4 		– Sell
-2,204
Closed -$25.4K – 8166
2021
Q3 		$25K Buy
+2,204
New +$22.6K ﹤0.01% 7034
2021
Q2 		– Sell
-669
Closed -$6.86K – 8114
2021
Q1 		$8K Buy
+669
New +$6.19K ﹤0.01% 7105
2020
Q4 		– Sell
-1,500
Closed -$7K – 6464
2020
Q3 		$7K Buy
+1,500
New +$7.73K ﹤0.01% 5526
2020
Q1 		– Sell
-300
Closed -$1.69K – 5226
2019
Q4 		$2K Buy
+300
New +$1.74K ﹤0.01% 4879
2018
Q4 		– Sell
-260
Closed -$1.27K – 4852
2018
Q3 		$1K Sell
260
-830
-76% -$4.55K ﹤0.01% 5061
2018
Q2 		$7K Sell
1,090
-3,500
-76% -$27.3K ﹤0.01% 4707
2018
Q1 		$34K Buy
4,590
+4,290
+1,430% +$38.6K ﹤0.01% 3836
2017
Q4 		$3K Sell
300
-300
-50% -$3.67K ﹤0.01% 4639
2017
Q3 		$7K Buy
+600
New +$6.04K ﹤0.01% 4380
2014
Q4 		– Sell
-368
Closed -$4K – 4869
2014
Q3 		$4K Buy
+368
New +$3.87K ﹤0.01% 4770
2013
Q3 		– Sell
-519
Closed -$3K – 5185
2013
Q2 		$3K Buy
+519
New +$2.33K ﹤0.01% 4812

Other funds holding ASYS

First Eagle Investment Management
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
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Marshall Wace
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
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Group One Trading's ASYS Position: Q1 2026 in Review

Group One Trading reduced its Amtech Systems (ASYS) stake by 56% in Q1 2026, selling an estimated $57.1K and leaving 3,311 shares worth $38.7K. The position accounts for ﹤0.01% of the portfolio, ranked #5459.

Group One Trading first reported a position in ASYS in Q2 2013 and has held it in 16 quarters since. The position peaked at $94.7K in Q4 2025. 79 funds tracked by Wall St. Rank hold ASYS as of Q1 2026.

  • Group One Trading held 3,311 shares of Amtech Systems worth $38.7K as of Q1 2026.
  • Group One Trading sold 4,238 Amtech Systems shares in Q1 2026, an estimated $57.1K.
  • Amtech Systems made up ﹤0.01% of Group One Trading's portfolio in Q1 2026, its #5459 holding.
  • Group One Trading first reported a position in Amtech Systems in Q2 2013 and has held it in 16 quarters since.
  • Group One Trading's Amtech Systems position peaked at $94.7K in Q4 2025.
  • 79 funds tracked by Wall St. Rank held Amtech Systems as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.