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John Overdeck’s Amtech Systems ASYS Stock Holding History

John Overdeck’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 		$5.87M Sell
254,367
-12,489
-5% -$237K ﹤0.01% 1987
2026
Q1 		$3.12M Buy
266,856
+155,419
+139% +$2.09M ﹤0.01% 2412
2025
Q4 		$1.4M Buy
+111,437
New +$1M ﹤0.01% 2705
2023
Q2 		– Sell
-10,100
Closed -$96.4K – 2999
2023
Q1 		$96.4K Sell
10,100
-1,100
-10% -$10.3K ﹤0.01% 2679
2022
Q4 		$85.1K Sell
11,200
-600
-5% -$5.43K ﹤0.01% 2530
2022
Q3 		$100K Sell
11,800
-3,400
-22% -$31.3K ﹤0.01% 2231
2022
Q2 		$111K Sell
15,200
-14,040
-48% -$121K ﹤0.01% 2258
2022
Q1 		$294K Sell
29,240
-40,830
-58% -$390K ﹤0.01% 2221
2021
Q4 		$692K Buy
70,070
+29,043
+71% +$335K ﹤0.01% 2917
2021
Q3 		$469K Sell
41,027
-102,135
-71% -$1.05M ﹤0.01% 3326
2021
Q2 		$1.38M Sell
143,162
-4,057
-3% -$41.6K ﹤0.01% 2197
2021
Q1 		$1.74M Buy
+147,219
New +$1.36M ﹤0.01% 1818
2020
Q4 		– Sell
-10,900
Closed -$53K – 3318
2020
Q3 		$53K Hold
10,900
– – ﹤0.01% 2976
2020
Q2 		$53K Sell
10,900
-900
-8% -$4.45K ﹤0.01% 2837
2020
Q1 		$51K Hold
11,800
– – ﹤0.01% 2927
2019
Q4 		$84K Hold
11,800
– – ﹤0.01% 3539
2019
Q3 		$63K Sell
11,800
-800
-6% -$4.39K ﹤0.01% 3345
2019
Q2 		$69K Sell
12,600
-9,300
-42% -$56.7K ﹤0.01% 3228
2019
Q1 		$117K Buy
21,900
+10,800
+97% +$53.3K ﹤0.01% 2881
2018
Q4 		$50K Buy
+11,100
New +$54.2K ﹤0.01% 2865
2018
Q3 		– Sell
-10,397
Closed -$63K – 3158
2018
Q2 		$63K Buy
+10,397
New +$81.1K ﹤0.01% 3227
2018
Q1 		– Sell
-68,627
Closed -$691K – 3117
2017
Q4 		$691K Buy
+68,627
New +$839K ﹤0.01% 2217

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 $59.9B AUM 27.01% 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

John Overdeck's ASYS Position: Q2 2026 in Review

John Overdeck reduced its Amtech Systems (ASYS) stake by 4.7% in Q2 2026, selling an estimated $237K and leaving 254,367 shares worth $5.87M. The position accounts for ﹤0.01% of the portfolio, ranked #1987.

John Overdeck first reported a position in ASYS in Q4 2017 and has held it in 22 quarters since. 111 funds tracked by Wall St. Rank hold ASYS as of Q2 2026.

  • John Overdeck held 254,367 shares of Amtech Systems worth $5.87M as of Q2 2026.
  • John Overdeck sold 12,489 Amtech Systems shares in Q2 2026, an estimated $237K.
  • Amtech Systems made up ﹤0.01% of John Overdeck's portfolio in Q2 2026, its #1987 holding.
  • John Overdeck first reported a position in Amtech Systems in Q4 2017 and has held it in 22 quarters since.
  • 111 funds tracked by Wall St. Rank held Amtech Systems as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.