| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GROUP ONE TRADING, L.P. | 42 | 42 | 0.01% | 0.11% | 0.41% | Q2 2013 | Q3 2023 | 42 |
| SIMPLEX TRADING, LLC | 36 | 36 | 0.00% | 0.03% | 0.06% | Q4 2014 | Q3 2023 | 36 |
| Allianz Asset Management GmbH | 21 | 1 | 0.00% | 0.00% | 0.01% | Q1 2015 | Q2 2021 | 22 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 21 | 21 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2023 | 21 |
| IMC-Chicago, LLC | 11 | 8 | 0.00% | 0.02% | 0.05% | Q4 2018 | Q3 2023 | 19 |
| JPMORGAN CHASE & CO | 7 | 1 | 0.00% | 0.00% | 0.00% | Q3 2015 | Q3 2023 | 17 |
| Timber Hill LLC | 16 | 16 | 0.00% | 0.03% | 0.07% | Q2 2013 | Q1 2017 | 16 |
| CMT Capital Markets Trading GmbH | 11 | 1 | 0.00% | 0.07% | 0.34% | Q4 2015 | Q2 2023 | 16 |
| Citadel Advisors | 13 | 13 | 0.00% | 0.01% | 0.02% | Q2 2013 | Q2 2016 | 13 |
| Virtu KCG Holdings LLC | 10 | 10 | 0.00% | 0.02% | 0.04% | Q3 2013 | Q4 2015 | 10 |
| SG Americas Securities, LLC | 5 | 4 | 0.00% | 0.00% | 0.00% | Q1 2019 | Q4 2022 | 9 |
| JANE STREET GROUP, LLC | 6 | 6 | 0.00% | 0.01% | 0.01% | Q2 2022 | Q3 2023 | 6 |
| Teewinot Capital Advisers, L.L.C. | 3 | 2 | 0.07% | 0.35% | 1.12% | Q2 2014 | Q3 2015 | 5 |
| Catalyst Capital Advisors LLC | 4 | 4 | 0.00% | 0.00% | 0.00% | Q1 2017 | Q4 2017 | 4 |
| HBK INVESTMENTS L P | 2 | 1 | 0.00% | 0.00% | 0.01% | Q2 2021 | Q1 2022 | 3 |
| Marathon Trading Investment Management LLC | 3 | 3 | 0.03% | 0.04% | 0.04% | Q2 2015 | Q4 2015 | 3 |
| Maven Securities LTD | 2 | 2 | 0.00% | 0.01% | 0.02% | Q2 2023 | Q3 2023 | 2 |
| Gladius Capital Management LP | 2 | 2 | 0.12% | 0.14% | 0.17% | Q3 2019 | Q4 2019 | 2 |
| Focused Wealth Management, Inc | 1 | 1 | 0.00% | 0.00% | 0.01% | Q2 2018 | Q2 2021 | 2 |
| Hudson Bay Capital Management LP | 2 | 2 | 0.02% | 0.02% | 0.03% | Q1 2018 | Q2 2018 | 2 |
| Advanced Portfolio Management, LLC | 1 | 1 | 0.13% | 0.13% | 0.13% | Q3 2023 | Q3 2023 | 1 |
| Executive Wealth Management, LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q4 2018 | Q4 2018 | 1 |
| Twin Tree Management, LP | 1 | 1 | 0.01% | 0.01% | 0.01% | Q2 2023 | Q2 2023 | 1 |
| PEAK6 Group LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2014 | Q3 2014 | 1 |
| BOOTHBAY FUND MANAGEMENT, LLC | 1 | 1 | 0.03% | 0.03% | 0.03% | Q2 2018 | Q2 2018 | 1 |
| BLAIR WILLIAM & CO/IL | 1 | 1 | 0.00% | 0.00% | 0.00% | Q4 2016 | Q4 2016 | 1 |
| KNIGHT CAPITAL GROUP LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q2 2013 | 1 |
| TWO SIGMA SECURITIES, LLC | 1 | 1 | 0.03% | 0.03% | 0.03% | Q3 2019 | Q3 2019 | 1 |
| CLOVIS CAPITAL MANAGEMENT LP | 1 | 1 | 2.44% | 2.44% | 2.44% | Q3 2016 | Q3 2016 | 1 |
| Capital Markets Trading UK LLP | 1 | 1 | 0.04% | 0.04% | 0.04% | Q1 2020 | Q1 2020 | 1 |
| TLP GROUP LLC | 1 | 1 | 0.05% | 0.05% | 0.05% | Q4 2015 | Q4 2015 | 1 |
This page lists all the filers that currently own SOUTHWEST AIRLS CO or have owned SOUTHWEST AIRLS CO in the past.