| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 3 | 3 | 0.00% | 0.00% | 0.00% | Q3 2013 | Q1 2014 | 3 |
This page lists all the filers that currently own AMTECH SYS INC or have owned AMTECH SYS INC in the past.