| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| Ancora Advisors LLC | 1 | 1 | 0.09% | 0.11% | 0.14% | Q2 2013 | Q1 2015 | 3 |
| Janney Montgomery Scott LLC | 1 | 1 | 0.00% | 0.00% | 0.01% | Q4 2013 | Q1 2015 | 2 |
| CROFT-LEOMINSTER INC | 1 | 1 | 0.03% | 0.03% | 0.03% | Q1 2014 | Q1 2014 | 1 |
| Keane Capital Partners, LLC | 1 | 1 | 2.42% | 2.42% | 2.42% | Q1 2016 | Q1 2016 | 1 |
| ARDSLEY ADVISORY PARTNERS LP | 1 | 1 | 0.22% | 0.22% | 0.22% | Q2 2014 | Q2 2014 | 1 |
| Psagot Value Holdings Ltd. | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q3 2014 | 1 |
| GROUP ONE TRADING, L.P. | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q3 2014 | 1 |
This page lists all the filers that currently own AMTECH SYS INC or have owned AMTECH SYS INC in the past.