| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1 | 1 | 0.00% | 0.00% | 0.00% | Q4 2015 | Q2 2016 | 2 |
| SpiderRock Trading LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q4 2013 | Q4 2013 | 1 |
| DEUTSCHE BANK AG\ | 1 | 1 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q2 2013 | 1 |
This page lists all the filers that currently own CECO ENVIRONMENTAL CORP or have owned CECO ENVIRONMENTAL CORP in the past.