| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 17 | 1 | 0.00% | 0.00% | 0.01% | Q3 2014 | Q1 2019 | 18 |
| SIMPLEX TRADING, LLC | 17 | 17 | 0.00% | 0.00% | 0.00% | Q1 2015 | Q1 2019 | 17 |
| Timber Hill LLC | 16 | 16 | 0.00% | 0.01% | 0.02% | Q2 2013 | Q1 2017 | 16 |
| Citadel Advisors | 13 | 13 | 0.00% | 0.01% | 0.03% | Q2 2013 | Q2 2016 | 13 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 7 | 7 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q1 2020 | 7 |
| SG Americas Securities, LLC | 3 | 3 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q1 2019 | 3 |
| ADVENT CAPITAL MANAGEMENT /DE/ | 2 | 2 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q4 2018 | 2 |
| KNIGHT CAPITAL GROUP LLC | 1 | 1 | 0.01% | 0.01% | 0.01% | Q2 2013 | Q2 2013 | 1 |
| HBK INVESTMENTS L P | 1 | 1 | 0.00% | 0.00% | 0.00% | Q4 2018 | Q4 2018 | 1 |
| PEAK6 Group LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q3 2014 | 1 |
| JPMORGAN CHASE & CO | 1 | 1 | 0.00% | 0.00% | 0.00% | Q4 2017 | Q4 2017 | 1 |
| BOLTON LP | 1 | 1 | 0.00% | 0.00% | 0.00% | Q4 2013 | Q4 2013 | 1 |
| SIGMA CAPITAL MANAGEMENT LLC | 1 | 1 | 0.31% | 0.31% | 0.31% | Q2 2013 | Q2 2013 | 1 |
| Virtu KCG Holdings LLC | 1 | 1 | 0.01% | 0.01% | 0.01% | Q3 2013 | Q3 2013 | 1 |
| Hudson Bay Capital Management LP | 1 | 1 | 0.17% | 0.17% | 0.17% | Q2 2015 | Q2 2015 | 1 |
This page lists all the filers that currently own ROWAN COMPANIES PLC or have owned ROWAN COMPANIES PLC in the past.