| SC 13G/A | 2017-02-14 | Ancient Art, L.P. | Interactive Brokers Group, Inc. | 3,301,252 | 4.9% | EDGAR |
| SC 13G/A | 2017-02-10 | VANGUARD GROUP INC | Interactive Brokers Group, Inc. | 5,501,512 | 8.1% | EDGAR |
| SC 13G | 2017-01-27 | BAILLIE GIFFORD & CO | Interactive Brokers Group, Inc. | 5,499,239 | 8.1% | EDGAR |
| SC 13G/A | 2017-01-25 | BlackRock Inc. | Interactive Brokers Group, Inc. | 6,092,039 | 9.1% | EDGAR |
| SC 13D/A | 2016-08-03 | IBG Holdings LLC | Interactive Brokers Group, Inc. | 1,596,200 | 83.8% | EDGAR |
| SC 13G/A | 2016-02-16 | Kylin Management LLC | Interactive Brokers Group, Inc. | 4,621,815 | 7.3% | EDGAR |
| SC 13G/A | 2016-02-16 | Ancient Art, L.P. | Interactive Brokers Group, Inc. | 3,218,013 | 5.1% | EDGAR |
| SC 13G/A | 2016-02-12 | FMR LLC | Interactive Brokers Group, Inc. | 1,246,298 | 2.0% | EDGAR |
| SC 13G/A | 2016-02-12 | RS INVESTMENT MANAGEMENT CO LLC | Interactive Brokers Group, Inc. | 0 | 0.0% | EDGAR |
| SC 13G/A | 2016-02-10 | VANGUARD GROUP INC | Interactive Brokers Group, Inc. | 4,416,596 | 6.9% | EDGAR |
| SC 13G/A | 2016-01-26 | BlackRock Inc. | Interactive Brokers Group, Inc. | 4,390,272 | 6.9% | EDGAR |
| SC 13D/A | 2015-07-24 | IBG Holdings LLC | Interactive Brokers Group, Inc. | 2,771,778 | 85.0% | EDGAR |
| SC 13G/A | 2015-02-17 | Ancient Art, L.P. | Interactive Brokers Group, Inc. | 3,403,458 | 5.8% | EDGAR |
| SC 13G/A | 2015-02-17 | Kylin Management LLC | Interactive Brokers Group, Inc. | 3,483,544 | 6.0% | EDGAR |
| SC 13G/A | 2015-02-13 | FMR LLC | Interactive Brokers Group, Inc. | 3,425,883 | 5.9% | EDGAR |
| SC 13G/A | 2015-02-12 | RS INVESTMENT MANAGEMENT CO LLC | Interactive Brokers Group, Inc. | 2,938,424 | 5.0% | EDGAR |
| SC 13G/A | 2015-02-10 | VANGUARD GROUP INC | Interactive Brokers Group, Inc. | 3,637,972 | 6.2% | EDGAR |
| SC 13G/A | 2015-01-29 | BlackRock Inc. | Interactive Brokers Group, Inc. | 3,830,856 | 6.6% | EDGAR |
| SC 13D/A | 2014-10-29 | IBG Holdings LLC | Interactive Brokers Group, Inc. | 1,358,478 | 85.9% | EDGAR |
| SC 13G/A | 2014-10-10 | FMR LLC | Interactive Brokers Group, Inc. | 3,688,583 | 6.5% | EDGAR |