# Interactive Brokers Group (IBKR): value investors who own it

3 value investors held Interactive Brokers Group in their Q3 2026 13F, led by Oakcliff Capital, RV Capital, Cantillon Capital Management.

## 13F holders

| Manager | Portfolio | Value | Change | Quarters held |
| --- | --- | --- | --- | --- |
| Oakcliff Capital | 33.4% | $89.7m | Unchanged | 38 |
| RV Capital | 12.8% | $48.8m | Trimmed -26% | 14 |
| Cantillon Capital Management | 6.8% | $45.1m | Trimmed -95% | 37 |

## Directors buying and selling (Form 4, last 12 months)

| Date | Who | Role | Bought or sold | Shares | Value |
| --- | --- | --- | --- | --- | --- |
| 2026-10-01 | Conkling Lori A | Director | Bought | 25 | $2k |
| 2026-09-01 | Conkling Lori A | Director | Bought | 25 | $2k |
| 2026-08-03 | Conkling Lori A | Director | Bought | 25 | $2k |

Source: SEC filings, via moatshark (https://www.moatshark.com/s/ibkr). Values traded and returns are estimates. Not investment advice. Built 2026-10-21.