IBKR — Interactive Brokers Group, Inc.
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Dividends
Measured signals that fired on IBKR
| date | signal | measured base rate |
|---|---|---|
| 2026-08-21 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
| 2026-07-17 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-06-12 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-06-01 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-04-22 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-04-16 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-03 | Conkling Lori A Director | Open-market purchase 10b5-1 plan | 25 | 87.03 | 2.2K |
| 2026-07-31 | Nemser Earl H Vice Chairman | Grant or award | 803.6K | 87.99 | 70.7M |
| 2026-07-01 | Conkling Lori A Director | Open-market purchase 10b5-1 plan | 25 | 88.03 | 2.2K |
| 2026-06-01 | Conkling Lori A Director | Open-market purchase 10b5-1 plan | 25 | 86.10 | 2.2K |
| 2026-05-08 | Galik Milan Chief Executive Officer | Shares withheld for tax | 255.0K | 84.42 | 21.5M |
| 2026-05-08 | Brody Paul Jonathan Chief Financial Officer | Shares withheld for tax | 82.9K | 84.42 | 7.0M |
| 2026-05-08 | Frank Thomas AJ Executive Vice President | Shares withheld for tax | 31.7K | 84.42 | 2.7M |
| 2026-05-08 | Nemser Earl H Vice Chairman | Shares withheld for tax | 22.5K | 84.42 | 1.9M |
| 2026-05-08 | Mendonca Denis Chief Accounting Officer | Shares withheld for tax | 11.2K | 84.42 | 941.9K |
| 2026-05-01 | Conkling Lori A Director | Open-market purchase 10b5-1 plan | 25 | 79.64 | 2.0K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 2.1B | 31.4M |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.9B | 28.2M |
| STATE STREET CORP | 1.3B | 19.1M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.0B | 15.0M |
| FMR LLC | 838.5M | 12.5M |
| Cantillon Capital Management LLC | 754.3M | 11.2M |
| GEODE CAPITAL MANAGEMENT, LLC | 699.5M | 10.4M |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 671.8M | 10.0M |
| WELLINGTON MANAGEMENT GROUP LLP | 655.6M | 9.8M |
| Invesco Ltd. | 647.0M | 9.6M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 10-Q | 2026-08-06 | 2026-06-30 | on EDGAR ↗ |
| 4 | 2026-08-04 | 2026-07-31 | on EDGAR ↗ |
| 4 | 2026-08-04 | 2026-08-03 | on EDGAR ↗ |
| 424B5 | 2026-07-31 | — | on EDGAR ↗ |
| 8-K | 2026-07-31 | 2026-07-31 | on EDGAR ↗ |
| 424B5 | 2026-07-31 | — | on EDGAR ↗ |
| 8-K | 2026-07-31 | 2026-07-31 | on EDGAR ↗ |
| S-3ASR | 2026-07-31 | — | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Interactive Brokers' Margin Loans Grew 49% in a Year to $100.7 Billion · 2026-08-20
- Interactive Brokers Is Holding $930 Billion of Customer Money. Here's What That Earns at Today's Rates. · 2026-08-19
- Reported August 13, 'Feds probe 'mention markets' amid White House Kalshi controversy' - NPR Exclusive · 2026-08-14 · benzinga
- 'Kalshi Tops $4B In Annualized Revenue as it Seeks $40B Valuation'- The Information · 2026-08-11 · benzinga
- 'CFTC Warns Prediction Markets Against American-Style Casino Odds' - Bloomberg News · 2026-08-07 · benzinga
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