Interactive Brokers Group Inc (IBKR) is 33.42% of Bryan R. Lawrence's Oakcliff Capital Partners portfolio as of June 30, 2026, according to the 13F-HR filed with the SEC on August 13, 2026: 1.03M shares worth about $89.7M, the largest of 9 stock positions. Bryan R. Lawrence left the share count unchanged from the prior quarter.
What did the 2026 Q2 filing report for IBKR?
As of June 30, 2026, from the 13F-HR filed August 13, 2026.
| Value | |
|---|---|
| Portfolio weight | 33.42% |
| Shares | 1.03M |
| Reported value | $89.7M |
| Rank in portfolio | 1st of 9 |
| Next largest holding | GOOG at 15.55% |
| Top three holdings | 62.07% of the book |
| Change this quarter | unchanged |
How concentrated is Bryan R. Lawrence in IBKR?
IBKR at 33.42% is 3 times the average stock position in the Bryan R. Lawrence portfolio, which is 11%. The next largest holding is GOOG at 15.55%. The three largest stocks together are 62.07% of the reported book. A quarter earlier IBKR was 30.5% of the book.
Where does IBKR sit in the Bryan R. Lawrence portfolio?
IBKR is the largest of 9 stock positions in the Bryan R. Lawrence portfolio at 33.42%, above the fund's average stock position of 11%. Across the 2026 Q2 portfolio, Bryan R. Lawrence reported 9 stock positions, with 1 opened and none closed. The total portfolio value is about $268.5M, up 18% from the prior quarter.
How long has Bryan R. Lawrence held IBKR?
Bryan R. Lawrence first reported IBKR in the quarter ended March 31, 2017. The current weight is the highest the fund has reported for the name. The share count was unchanged the quarter before. Every reported trade is on the Bryan R. Lawrence IBKR trade history page.
Did other funds buy or sell IBKR in 2026 Q2?
Among the other tracked funds that had filed for 2026 Q2 as of August 13, 2026, 6 hold IBKR. Of those, one opened it this quarter. The largest buyers of IBKR this quarter were Ole Andreas Halvorsen and Stephen Mandel. The largest sellers were William Von Mueffling, John Armitage and Rob Vinall. Every tracked holder of IBKR is on the IBKR ownership page.
FAQ
What share of the Bryan R. Lawrence portfolio is IBKR?
IBKR is 33.42% of the Bryan R. Lawrence portfolio as of 2026 Q2, the largest of 9 stock positions.
What is the IBKR stake of Bryan R. Lawrence worth?
Bryan R. Lawrence holds 1.03M shares of IBKR, worth about $89.7M at June 30, 2026 prices, 33.42% of the reported portfolio.
What are the largest holdings of Bryan R. Lawrence?
The largest stock positions of Bryan R. Lawrence as of 2026 Q2 are IBKR (33.42%), GOOG (15.55%) and GIL (13.1%), together 62.07% of the book.
Did Bryan R. Lawrence's Oakcliff Capital Partners change its IBKR position in 2026 Q2?
Bryan R. Lawrence left the share count unchanged from the prior quarter.