Thomas Aj Frank is CIO at Interactive Brokers Group, Inc. (IBKR). They have made 202 open-market trades across 1 company since 2015, most recently 2026-05-08.
CIK 0001391401
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 202 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| IBKR | 251,518 | $20.8M |
Shares reported on the most recent Form 4, priced at the 2026-05-28 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| IBKR | SELL | 2024-02-05 | 2024-02-07 | $95.47 | $4.3M | +9.3% | +14.1% | +27.4% |
| IBKR | SELL | 2024-02-01 | 2024-02-05 | $93.77 | $15.8M | +10.0% | +15.7% | +28.3% |
| IBKR | SELL | 2024-01-30 | 2024-02-01 | $90.18 | $1.6M | +10.4% | +21.5% | +27.9% |
| IBKR | SELL | 2024-01-26 | 2024-01-30 | $90.95 | $17.4M | +9.7% | +21.6% | +30.6% |
| IBKR | SELL | 2024-01-24 | 2024-01-26 | $91.12 | $14.3M | +2.8% | +17.4% | +27.8% |
| IBKR | SELL | 2024-01-22 | 2024-01-24 | $91.09 | $17.7M | +3.6% | +16.3% | +24.9% |
| IBKR | SELL | 2024-01-18 | 2024-01-22 | $88.73 | $2.6M | -0.6% | +14.9% | +23.7% |
| IBKR | SELL | 2024-01-16 | 2024-01-18 | $88.54 | $5.0M | +0.9% | +16.2% | +22.8% |
| IBKR | SELL | 2024-01-11 | 2024-01-16 | $88.01 | $4.6M | +9.0% | +24.3% | +29.7% |
| IBKR | SELL | 2024-01-09 | 2024-01-11 | $87.18 | $4.5M | +4.6% | +11.8% | +29.3% |
| IBKR | SELL | 2024-01-05 | 2024-01-09 | $87.39 | $4.5M | +4.7% | +9.6% | +31.4% |
| IBKR | SELL | 2024-01-03 | 2024-01-05 | $86.60 | $3.6M | +1.1% | +8.2% | +26.4% |
| IBKR | SELL | 2023-10-16 | 2023-10-18 | $86.42 | $4.6M | -3.0% | -3.9% | +5.8% |
| IBKR | SELL | 2023-10-12 | 2023-10-16 | $85.71 | $4.5M | -6.6% | -6.5% | +1.6% |
| IBKR | SELL | 2023-10-10 | 2023-10-12 | $88.04 | $4.6M | -5.8% | -4.4% | +1.9% |
| IBKR | SELL | 2023-10-06 | 2023-10-10 | $89.18 | $5.0M | -9.0% | -6.9% | -0.6% |
| IBKR | SELL | 2023-10-04 | 2023-10-06 | $86.80 | $4.6M | -7.5% | -9.8% | -2.7% |
| IBKR | SELL | 2023-10-02 | 2023-10-04 | $86.58 | $4.5M | +0.3% | -7.2% | -1.3% |
| IBKR | SELL | 2023-09-28 | 2023-10-02 | $87.38 | $4.3M | -0.8% | -8.8% | -1.9% |
| IBKR | SELL | 2023-09-26 | 2023-09-28 | $87.11 | $4.6M | +0.2% | -9.3% | -6.3% |
| IBKR | SELL | 2023-09-25 | 2023-09-26 | $87.80 | $2.3M | +3.4% | -7.6% | -4.2% |
| IBKR | SELL | 2023-09-21 | 2023-09-25 | $88.94 | $5.0M | +0.9% | -8.5% | -4.6% |
| IBKR | SELL | 2023-09-19 | 2023-09-21 | $89.94 | $7.3M | -2.6% | -10.1% | -8.7% |
| IBKR | SELL | 2023-09-15 | 2023-09-19 | $91.43 | $7.2M | -3.3% | -9.3% | -9.4% |
| IBKR | SELL | 2023-09-13 | 2023-09-15 | $92.50 | $7.5M | -3.8% | -6.2% | -11.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.