| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 36 | 36 | 0.00% | 0.04% | 0.10% | Q4 2014 | Q3 2023 | 36 |
| GROUP ONE TRADING, L.P. | 32 | 32 | 0.00% | 0.09% | 0.35% | Q4 2015 | Q3 2023 | 32 |
| SG Americas Securities, LLC | 13 | 1 | 0.00% | 0.01% | 0.06% | Q3 2014 | Q3 2022 | 22 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 21 | 21 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2023 | 21 |
| IMC-Chicago, LLC | 11 | 8 | 0.01% | 0.01% | 0.03% | Q4 2018 | Q3 2023 | 19 |
| Timber Hill LLC | 17 | 17 | 0.01% | 0.03% | 0.12% | Q2 2013 | Q2 2017 | 17 |
| Allianz Asset Management GmbH | 9 | 1 | 0.00% | 0.01% | 0.03% | Q1 2015 | Q3 2023 | 15 |
| CMT Capital Markets Trading GmbH | 14 | 14 | 0.02% | 0.16% | 0.32% | Q2 2020 | Q3 2023 | 14 |
| Citadel Advisors | 13 | 13 | 0.01% | 0.02% | 0.05% | Q2 2013 | Q2 2016 | 13 |
| HBK INVESTMENTS L P | 7 | 1 | 0.00% | 0.08% | 0.28% | Q2 2018 | Q1 2022 | 12 |
| JPMORGAN CHASE & CO | 5 | 1 | 0.00% | 0.00% | 0.00% | Q1 2016 | Q3 2022 | 11 |
| Virtu KCG Holdings LLC | 9 | 9 | 0.01% | 0.02% | 0.03% | Q3 2013 | Q3 2015 | 9 |
| JANE STREET GROUP, LLC | 6 | 6 | 0.01% | 0.01% | 0.02% | Q2 2022 | Q3 2023 | 6 |
| Pentwater Capital Management LP | 5 | 5 | 0.11% | 0.21% | 0.41% | Q4 2015 | Q4 2016 | 5 |
| Hudson Bay Capital Management LP | 4 | 4 | 0.06% | 0.13% | 0.24% | Q1 2018 | Q4 2018 | 4 |
| Maven Securities LTD | 3 | 1 | 0.01% | 0.02% | 0.04% | Q3 2020 | Q1 2022 | 4 |
| COMMERZBANK AKTIENGESELLSCHAFT /FI | 2 | 1 | 0.00% | 0.02% | 0.04% | Q3 2013 | Q2 2019 | 3 |
| Elite Wealth Management, Inc. | 1 | 1 | 0.00% | 0.00% | 0.00% | Q1 2013 | Q4 2013 | 2 |
| HRT FINANCIAL LP | 1 | 1 | 0.07% | 0.09% | 0.10% | Q3 2019 | Q1 2020 | 2 |
| All Terrain Financial Advisors, LLC | 2 | 2 | 0.04% | 0.04% | 0.04% | Q4 2017 | Q1 2018 | 2 |
| ADVENT CAPITAL MANAGEMENT /DE/ | 1 | 1 | 0.00% | 0.00% | 0.00% | Q2 2016 | Q3 2018 | 2 |
| Mint Tower Capital Management B.V. | 2 | 2 | 0.00% | 0.22% | 0.43% | Q2 2017 | Q3 2017 | 2 |
| CIBC WORLD MARKETS CORP | 2 | 2 | 0.10% | 0.24% | 0.37% | Q2 2016 | Q3 2016 | 2 |
| Twin Tree Management, LP | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2023 | Q3 2023 | 1 |
| WELLS FARGO & COMPANY/MN | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2021 | Q3 2021 | 1 |
| SOCIETE GENERALE | 1 | 1 | 0.00% | 0.00% | 0.00% | Q2 2016 | Q2 2016 | 1 |
| TWO SIGMA SECURITIES, LLC | 1 | 1 | 0.02% | 0.02% | 0.02% | Q3 2019 | Q3 2019 | 1 |
| PEAK6 Group LLC | 1 | 1 | 0.01% | 0.01% | 0.01% | Q3 2014 | Q3 2014 | 1 |
| Marathon Trading Investment Management LLC | 1 | 1 | 0.03% | 0.03% | 0.03% | Q3 2016 | Q3 2016 | 1 |
| Capital Markets Trading UK LLP | 1 | 1 | 0.04% | 0.04% | 0.04% | Q3 2023 | Q3 2023 | 1 |
| KNIGHT CAPITAL GROUP LLC | 1 | 1 | 0.03% | 0.03% | 0.03% | Q2 2013 | Q2 2013 | 1 |
| CenterStar Asset Management, LLC | 1 | 1 | 0.10% | 0.10% | 0.10% | Q3 2023 | Q3 2023 | 1 |
| BOLTON LP | 1 | 1 | 0.00% | 0.00% | 0.00% | Q3 2013 | Q3 2013 | 1 |
This page lists all the filers that currently own WESTERN DIGITAL CORP or have owned WESTERN DIGITAL CORP in the past.