| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 36 | 36 | 0.00% | 0.00% | 0.01% | Q4 2014 | Q3 2023 | 36 |
| GROUP ONE TRADING, L.P. | 10 | 1 | 0.00% | 0.01% | 0.04% | Q2 2013 | Q2 2023 | 25 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 21 | 21 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2023 | 21 |
| Timber Hill LLC | 9 | 8 | 0.00% | 0.01% | 0.06% | Q2 2013 | Q4 2017 | 17 |
| Citadel Advisors | 13 | 13 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q2 2016 | 13 |
| Maven Securities LTD | 5 | 5 | 0.01% | 0.03% | 0.06% | Q1 2021 | Q1 2022 | 5 |
| SG Americas Securities, LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q1 2014 | Q4 2018 | 3 |
| JANE STREET GROUP, LLC | 3 | 3 | 0.00% | 0.00% | 0.00% | Q3 2022 | Q1 2023 | 3 |
| JPMORGAN CHASE & CO | 3 | 3 | 0.00% | 0.00% | 0.00% | Q1 2023 | Q3 2023 | 3 |
| TWO SIGMA SECURITIES, LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2019 | Q3 2019 | 1 |
| PEAK6 Group LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q3 2014 | 1 |
| Hartree Partners, LP | 1 | 1 | 0.01% | 0.01% | 0.01% | Q2 2021 | Q2 2021 | 1 |
This page lists all the filers that currently own PACKAGING CORP AMER or have owned PACKAGING CORP AMER in the past.