GROUP ONE TRADING, L.P. - AMTECH SYS INC ownership

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AMTECH SYS INC's ticker is and the CUSIP is 32332904.

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Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of AMTECH SYS INC
ValueSharesWeighting
Q3 2014$35,000
-53.3%
3,300
-45.9%
0.00%0.0%
Q2 2014$75,000
+87.5%
6,100
+84.8%
0.00%0.0%
Q1 2014$40,000
+400.0%
3,300
+200.0%
0.00%–
Q3 2013$8,000–1,100–0.00%–
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Other shareholders

There were no reported owners of AMTECH SYS INC in Q4 2014.

NameSharesValueWeighting ↓
View complete list of AMTECH SYS INC shareholders