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
2025
Q4 		– Sell
-5,300
Closed -$49.1K – 8091
2025
Q3 		$49.1K Buy
5,300
+3,700
+231% +$22.6K ﹤0.01% 5981
2025
Q2 		$7.1K Buy
1,600
+300
+23% +$1.17K ﹤0.01% 6923
2025
Q1 		$6.28K Buy
1,300
+1,200
+1,200% +$6.19K ﹤0.01% 6540
2024
Q4 		$545 Hold
100
– – ﹤0.01% 6996
2024
Q3 		$580 Buy
+100
New +$609 ﹤0.01% 6378
2024
Q1 		– Sell
-1,000
Closed -$4.2K – 7022
2023
Q4 		$4.2K Sell
1,000
-200
-17% -$1.36K ﹤0.01% 6577
2023
Q3 		$9.14K Buy
1,200
+200
+20% +$1.82K ﹤0.01% 6381
2023
Q2 		$9.56K Buy
1,000
+500
+100% +$4.54K ﹤0.01% 6417
2023
Q1 		$4.77K Buy
+500
New +$4.7K ﹤0.01% 6296
2022
Q1 		– Sell
-200
Closed -$2K – 7989
2021
Q4 		$2K Buy
200
+100
+100% +$1.15K ﹤0.01% 7855
2021
Q3 		$1K Sell
100
-2,400
-96% -$24.6K ﹤0.01% 7999
2021
Q2 		$24K Sell
2,500
-2,200
-47% -$22.6K ﹤0.01% 7069
2021
Q1 		$56K Buy
+4,700
New +$43.5K ﹤0.01% 6133
2020
Q2 		– Sell
-600
Closed -$3K – 5773
2020
Q1 		$3K Sell
600
-3,000
-83% -$16.9K ﹤0.01% 4869
2019
Q4 		$26K Buy
3,600
+1,600
+80% +$9.28K ﹤0.01% 4268
2019
Q3 		$11K Hold
2,000
– – ﹤0.01% 4561
2019
Q2 		$11K Buy
2,000
+500
+33% +$3.05K ﹤0.01% 4379
2019
Q1 		$8K Sell
1,500
-15,100
-91% -$74.6K ﹤0.01% 4331
2018
Q4 		$75K Hold
16,600
– – ﹤0.01% 3335
2018
Q3 		$89K Buy
16,600
+14,400
+655% +$79K ﹤0.01% 3608
2018
Q2 		$13K Sell
2,200
-5,100
-70% -$39.8K ﹤0.01% 4534
2018
Q1 		$53K Buy
7,300
+6,900
+1,725% +$62.1K ﹤0.01% 3631
2017
Q4 		$4K Buy
400
+300
+300% +$3.67K ﹤0.01% 4588
2017
Q3 		$1K Buy
+100
New +$1.01K ﹤0.01% 4691
2013
Q3 		– Sell
-10,000
Closed -$64K – 5184
2013
Q2 		$64K Buy
+10,000
New +$44.8K ﹤0.01% 3205

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.