| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| SIMPLEX TRADING, LLC | 36 | 36 | 0.00% | 0.04% | 0.14% | Q4 2014 | Q3 2023 | 36 |
| Allianz Asset Management GmbH | 22 | 11 | 0.00% | 0.03% | 0.09% | Q1 2015 | Q3 2023 | 33 |
| JPMORGAN CHASE & CO | 26 | 1 | 0.00% | 0.00% | 0.00% | Q3 2015 | Q3 2023 | 30 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 21 | 21 | 0.00% | 0.00% | 0.00% | Q3 2018 | Q3 2023 | 21 |
| IMC-Chicago, LLC | 8 | 3 | 0.01% | 0.04% | 0.10% | Q4 2018 | Q3 2023 | 17 |
| Timber Hill LLC | 17 | 17 | 0.01% | 0.05% | 0.09% | Q2 2013 | Q2 2017 | 17 |
| SG Americas Securities, LLC | 16 | 1 | 0.00% | 0.01% | 0.05% | Q1 2018 | Q2 2022 | 17 |
| Maven Securities LTD | 5 | 4 | 0.01% | 0.05% | 0.18% | Q4 2019 | Q3 2023 | 14 |
| Citadel Advisors | 13 | 13 | 0.02% | 0.03% | 0.04% | Q2 2013 | Q2 2016 | 13 |
| GROUP ONE TRADING, L.P. | 12 | 12 | 0.00% | 0.16% | 0.39% | Q4 2020 | Q3 2023 | 12 |
| Virtu KCG Holdings LLC | 7 | 2 | 0.00% | 0.01% | 0.03% | Q3 2013 | Q4 2015 | 9 |
| HRT FINANCIAL LP | 3 | 1 | 0.00% | 0.02% | 0.06% | Q3 2019 | Q3 2023 | 7 |
| JANE STREET GROUP, LLC | 6 | 6 | 0.02% | 0.03% | 0.04% | Q2 2022 | Q3 2023 | 6 |
| HBK INVESTMENTS L P | 1 | 1 | 0.01% | 0.01% | 0.04% | Q3 2018 | Q1 2022 | 5 |
| Garda Capital Partners LP | 2 | 1 | 0.13% | 0.19% | 0.29% | Q4 2022 | Q3 2023 | 3 |
| Hudson Bay Capital Management LP | 2 | 1 | 0.11% | 0.46% | 0.84% | Q1 2018 | Q1 2019 | 3 |
| LUPO SECURITIES, LLC | 2 | 2 | 0.02% | 0.03% | 0.04% | Q4 2014 | Q1 2015 | 2 |
| Assenagon Asset Management S.A. | 2 | 2 | 0.26% | 0.26% | 0.26% | Q3 2020 | Q4 2020 | 2 |
| KNIGHT CAPITAL GROUP LLC | 1 | 1 | 0.05% | 0.05% | 0.05% | Q2 2013 | Q2 2013 | 1 |
| Elite Wealth Management, Inc. | 1 | 1 | 0.00% | 0.00% | 0.00% | Q2 2013 | Q2 2013 | 1 |
| PEAK6 Group LLC | 1 | 1 | 0.06% | 0.06% | 0.06% | Q3 2014 | Q3 2014 | 1 |
| ATLAS CAPITAL ADVISORS LLC | 1 | 1 | 0.00% | 0.00% | 0.00% | Q2 2019 | Q2 2019 | 1 |
| COMMERZBANK AKTIENGESELLSCHAFT /FI | 1 | 1 | 0.02% | 0.02% | 0.02% | Q2 2019 | Q2 2019 | 1 |
| TWO SIGMA SECURITIES, LLC | 1 | 1 | 0.06% | 0.06% | 0.06% | Q3 2019 | Q3 2019 | 1 |
| Sender Co & Partners, Inc. | 1 | 1 | 0.54% | 0.54% | 0.54% | Q3 2022 | Q3 2022 | 1 |
This page lists all the filers that currently own BLACKROCK INC or have owned BLACKROCK INC in the past.