One Madison Group LLC
- SEC CIK
- 0001728278
- Latest filing
- Aug 14, 2026
IBKR holding history
Interactive Brokers Group, Inc. in every 13F filed by One Madison Group LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
IBKR overviewAll 13F holders of IBKRFull Q2 2026 holdings
- Shares (Q2 2026)
- 249,500
- Value
- $21.7M
- % of portfolio
- 2.1%
- Quarters held
- 7
- Since Q4 2024
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 249,500 | $21.7M | 2.1% | +30,125+13.7% | Added | Holders |
| Q1 2026 | 219,375 | $14.7M | 1.7% | +79,375+56.7% | Added | Holders |
| Q4 2025 | 140,000 | $9.00M | 1.0% | −30,000−17.6% | Reduced | Holders |
| Q3 2025 | 170,000 | $11.7M | 1.3% | −34,000−16.7% | Reduced | Holders |
| Q2 2025 | 204,000 | $11.3M | 1.2% | −36,000−15.0% | ReducedConverted for a 4-for-1 split | Holders |
| Q1 2025 | 60,000 | $9.94M | 1.3% | −90,000−60.0% | Reduced | Holders |
| Q4 2024 | 150,000 | $26.5M | 3.0% | – | No prior filing | Holders |