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 |
| 2023 Q4 | 3,728,869 | 2.07 | Reduce 2.38% | 0.05 | $82.90 |
| 2023 Q3 | 3,819,629 | 2.45 | Reduce 0.39% | 0.01 | $86.56 |
| 2023 Q2 | 3,834,468 | 2.23 | Add 6.38% | 0.13 | $83.07 |
| 2023 Q1 | 3,604,400 | 2.42 | Add 11.93% | 0.26 | $82.56 |
| 2022 Q4 | 3,220,214 | 1.97 | Add 30.33% | 0.46 | $72.35 |
| 2022 Q3 | 2,470,872 | 1.43 | Reduce 0.88% | 0.01 | $63.91 |
| 2022 Q2 | 2,492,911 | 1.14 | Add 12.07% | 0.12 | $55.01 |
| 2022 Q1 | 2,224,503 | 1.05 | Add 2.87% | 0.03 | $65.91 |
| 2021 Q4 | 2,162,492 | 1.13 | Reduce 7.02% | 0.09 | $79.42 |
| 2021 Q3 | 2,325,818 | 0.99 | Reduce 1.41% | 0.01 | $62.34 |
| 2021 Q2 | 2,359,066 | 1.04 | Reduce 1.59% | 0.02 | $65.73 |
| 2021 Q1 | 2,397,278 | 1.27 | Reduce 3.27% | 0.04 | $73.04 |
| 2020 Q4 | 2,478,421 | 1.13 | Reduce 0.40% | 0.00 | $60.92 |
| 2020 Q3 | 2,488,447 | 1.01 | Reduce 1.02% | 0.01 | $48.33 |
| 2020 Q2 | 2,514,083 | 0.91 | Add 0.75% | 0.01 | $41.77 |
| 2020 Q1 | 2,495,290 | 1.19 | Reduce 0.29% | 0.00 | $43.17 |
| 2019 Q4 | 2,502,438 | 1.08 | Reduce 2.07% | 0.02 | $46.62 |
| 2019 Q3 | 2,555,209 | 1.34 | Reduce 0.72% | 0.01 | $53.78 |
| 2019 Q2 | 2,573,615 | 1.41 | Reduce 1.72% | 0.02 | $54.20 |
| 2019 Q1 | 2,618,638 | 1.44 | Reduce 0.77% | 0.01 | $51.88 |
| 2018 Q4 | 2,638,920 | 1.74 | Add 0.90% | 0.02 | $54.65 |
| 2018 Q3 | 2,615,325 | 1.63 | Add 5.73% | 0.09 | $55.31 |
| 2018 Q2 | 2,473,537 | 1.72 | Reduce 2.66% | 0.05 | $64.41 |
| 2018 Q1 | 2,541,244 | 1.94 | Add 24.57% | 0.38 | $67.24 |
| 2017 Q4 | 2,040,053 | 1.43 | Reduce 4.93% | 0.07 | $59.21 |
| 2017 Q3 | 2,145,765 | 1.12 | Add 11.42% | 0.11 | $45.04 |
| 2017 Q2 | 1,925,891 | 0.90 | Buy | 0.90 | $37.42 |