William von Mueffling - Cantillon Capital Management
Holding/activity history for Interactive Brokers Group Inc. (IBKR)
| Period | Shares | % of Portfolio | Activity | % Change to Portfolio | Reported Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026 Q1 | 11,245,881 | 5.01 | Reduce 11.87% | 0.53 | $67.07 | $754,261,239 | SEC |
| 2025 Q4 | 12,759,904 | 4.44 | Add 0.76% | 0.03 | $64.31 | $820,589,426 | SEC |
| 2025 Q3 | 12,664,026 | 4.80 | Reduce 1.09% | 0.04 | $68.81 | $871,411,630 | SEC |
| 2025 Q2 | 12,803,631 | 4.10 | Add 288.72% | 3.05 | $55.41 | $709,449,194 | SEC |
| 2025 Q1 | 3,293,826 | 3.53 | Reduce 3.00% | 0.11 | $165.59 | $545,424,647 | SEC |
| 2024 Q4 | 3,395,690 | 3.63 | Add 0.53% | 0.02 | $176.67 | $599,916,552 | SEC |
| 2024 Q3 | 3,377,643 | 2.88 | Reduce 2.90% | 0.08 | $139.36 | $470,708,328 | SEC |
| 2024 Q2 | 3,478,575 | 2.85 | Reduce 4.85% | 0.12 | $122.60 | $426,473,295 | SEC |
| 2024 Q1 | 3,655,704 | 2.57 | Reduce 1.96% | 0.04 | $111.71 | $408,378,694 | SEC |
| 2023 Q4 | 3,728,869 | 2.07 | Reduce 2.38% | 0.06 | $82.90 | $309,123,240 | SEC |
| 2023 Q3 | 3,819,629 | 2.45 | Reduce 0.39% | <0.01 | $86.56 | $330,627,086 | SEC |
| 2023 Q2 | 3,834,468 | 2.23 | Add 6.38% | 0.13 | $83.07 | $318,529,257 | SEC |
| 2023 Q1 | 3,604,400 | 2.42 | Add 11.93% | 0.26 | $82.56 | $297,579,264 | SEC |
| 2022 Q4 | 3,220,214 | 1.97 | Add 30.33% | 0.46 | $72.35 | $232,982,483 | SEC |
| 2022 Q3 | 2,470,872 | 1.43 | Reduce 0.88% | 0.01 | $63.91 | $157,914,000 | SEC |
| 2022 Q2 | 2,492,911 | 1.14 | Add 12.07% | 0.12 | $55.01 | $137,135,000 | SEC |
| 2022 Q1 | 2,224,503 | 1.05 | Add 2.87% | 0.03 | $65.91 | $146,617,000 | SEC |
| 2021 Q4 | 2,162,492 | 1.13 | Reduce 7.02% | 0.07 | $79.42 | $171,745,000 | SEC |
| 2021 Q3 | 2,325,818 | 0.99 | Reduce 1.41% | 0.01 | $62.34 | $144,992,000 | SEC |
| 2021 Q2 | 2,359,066 | 1.04 | Reduce 1.59% | 0.02 | $65.73 | $155,062,000 | SEC |
| 2021 Q1 | 2,397,278 | 1.27 | Reduce 3.27% | 0.04 | $73.04 | $175,097,000 | SEC |
| 2020 Q4 | 2,478,421 | 1.13 | Reduce 0.40% | <0.01 | $60.92 | $150,985,000 | SEC |
| 2020 Q3 | 2,488,447 | 1.01 | Reduce 1.02% | <0.01 | $48.33 | $120,266,000 | SEC |
| 2020 Q2 | 2,514,083 | 0.91 | Add 0.75% | <0.01 | $41.77 | $105,013,000 | SEC |
| 2020 Q1 | 2,495,290 | 1.19 | Reduce 0.29% | <0.01 | $43.17 | $107,721,000 | SEC |
| 2019 Q4 | 2,502,438 | 1.08 | Reduce 2.07% | 0.03 | $46.62 | $116,664,000 | SEC |
| 2019 Q3 | 2,555,209 | 1.34 | Reduce 0.72% | 0.01 | $53.78 | $137,419,000 | SEC |
| 2019 Q2 | 2,573,615 | 1.41 | Reduce 1.72% | 0.02 | $54.20 | $139,490,000 | SEC |
| 2019 Q1 | 2,618,638 | 1.44 | Reduce 0.77% | 0.01 | $51.88 | $135,855,000 | SEC |
| 2018 Q4 | 2,638,920 | 1.74 | Add 0.90% | 0.02 | $54.65 | $144,217,000 | SEC |
| 2018 Q3 | 2,615,325 | 1.63 | Add 5.73% | 0.09 | $55.31 | $144,653,000 | SEC |
| 2018 Q2 | 2,473,537 | 1.72 | Reduce 2.66% | 0.05 | $64.41 | $159,320,000 | SEC |
| 2018 Q1 | 2,541,244 | 1.94 | Add 24.57% | 0.38 | $67.24 | $170,873,000 | SEC |
| 2017 Q4 | 2,040,053 | 1.43 | Reduce 4.93% | 0.06 | $59.21 | $120,791,000 | SEC |
| 2017 Q3 | 2,145,765 | 1.12 | Add 11.42% | 0.11 | $45.04 | $96,645,000 | SEC |
| 2017 Q2 | 1,925,891 | 0.90 | Buy | 0.90 | $37.42 | $72,067,000 | SEC |