INTERACTIVE BROKERS GROUP IN

Ticker: IBKR CUSIP: 45841N107 Class: EQTY

CANTILLON CAPITAL MANAGEMENT LLC's Holding History (CIK: 0001279936)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 12,759,904 Value ($000) $820,589 Avg Close $66.89 Range $58.88 - $73.26
Q3 2025
Shares 12,664,026 Value ($000) $871,412 Avg Close $62.79 Range $53.01 - $70.18
Q2 2025
Shares 12,803,631 Value ($000) $709,449 Avg Close $47.28 Range $32.69 - $55.48
Q1 2025
Shares 3,293,826 Value ($000) $545,425 Avg Close $49.31 Range $39.14 - $58.82
Q4 2024
Shares 3,395,690 Value ($000) $599,917 Avg Close $41.85 Range $33.69 - $48.10
Q3 2024
Shares 3,377,643 Value ($000) $470,708 Avg Close $30.72 Range $25.70 - $34.63
Q2 2024
Shares 3,478,575 Value ($000) $426,473 Avg Close $29.54 Range $26.42 - $31.96
Q1 2024
Shares 3,655,704 Value ($000) $408,379 Avg Close $24.63 Range $20.33 - $27.83
Q4 2023
Shares 3,728,869 Value ($000) $309,123 Avg Close $20.21 Range $17.92 - $22.24
Q3 2023
Shares 3,819,629 Value ($000) $330,627 Avg Close $21.95 Range $20.01 - $23.60
Q2 2023
Shares 3,834,468 Value ($000) $318,529 Avg Close $19.44 Range $17.44 - $21.23
Q1 2023
Shares 3,604,400 Value ($000) $297,579 Avg Close $20.03 Range $17.46 - $22.21
Q4 2022
Shares 3,220,214 Value ($000) $232,982 Avg Close $18.36 Range $15.40 - $20.01
Q3 2022
Shares 2,470,872 Value ($000) $157,914 Avg Close $15.12 Range $12.86 - $17.38
Q2 2022
Shares 2,492,911 Value ($000) $137,135 Avg Close $14.55 Range $12.78 - $16.65
Q1 2022
Shares 2,224,503 Value ($000) $146,617 Avg Close $16.85 Range $13.94 - $19.79
Q4 2021
Shares 2,162,492 Value ($000) $171,745 Avg Close $18.18 Range $15.23 - $20.25
Q3 2021
Shares 2,325,818 Value ($000) $144,992 Avg Close $15.36 Range $14.37 - $16.36
Q2 2021
Shares 2,359,066 Value ($000) $155,062 Avg Close $16.85 Range $15.38 - $18.89
Q1 2021
Shares 2,397,278 Value ($000) $175,097 Avg Close $17.53 Range $14.36 - $19.61
Q4 2020
Shares 2,478,421 Value ($000) $150,985 Avg Close $12.87 Range $11.33 - $15.30
Q3 2020
Shares 2,488,447 Value ($000) $120,266 Avg Close $12.09 Range $9.98 - $13.03
Q2 2020
Shares 2,514,083 Value ($000) $105,013 Avg Close $10.11 Range $8.76 - $11.44
Q1 2020
Shares 2,495,290 Value ($000) $107,721 Avg Close $11.67 Range $8.14 - $14.11
Q4 2019
Shares 2,502,438 Value ($000) $116,664 Avg Close $11.31 Range $10.72 - $12.50
Q3 2019
Shares 2,555,209 Value ($000) $137,419 Avg Close $11.96 Range $10.69 - $13.30
Q2 2019
Shares 2,573,615 Value ($000) $139,490 Avg Close $13.01 Range $11.86 - $14.22
Q1 2019
Shares 2,618,638 Value ($000) $135,855 Avg Close $12.59 Range $11.61 - $13.91
Q4 2018
Shares 2,638,920 Value ($000) $144,217 Avg Close $12.75 Range $11.08 - $14.96
Q3 2018
Shares 2,615,325 Value ($000) $144,653 Avg Close $14.48 Range $13.14 - $15.95
Q2 2018
Shares 2,473,537 Value ($000) $159,320 Avg Close $17.25 Range $15.13 - $19.13
Q1 2018
Shares 2,541,244 Value ($000) $170,873 Avg Close $15.75 Range $14.01 - $17.65
Q4 2017
Shares 2,040,053 Value ($000) $120,791 Avg Close $12.95 Range $10.63 - $14.82
Q3 2017
Shares 2,145,765 Value ($000) $96,645 Avg Close $9.67 Range $8.58 - $10.70
Q2 2017
Shares 1,925,891 Value ($000) $72,067 Avg Close $8.40 Range $7.80 - $9.05