| Company | Symbol | Filed By | Filing Date | Filing |
|---|---|---|---|---|
| Praesidium Investment Management Company, Llc | 2018-03-07 | |||
| Price T Rowe Associates Inc /md/ | 2018-02-14 | |||
| Vanguard Group Inc | 2018-02-12 | |||
| Blackrock Inc. | 2018-01-19 | |||
| Praesidium Investment Management Company, Llc | 2017-09-15 |