Interactive Brokers Group, Inc.
MX ˙ BMV ˙ US45841N1072
SecurityMX:IBKR / Interactive Brokers Group, Inc.
InstitutionAqr Capital Management Llc
ManagerCliff Asness
Latest Disclosed Ownership242,576 shares
Latest Disclosed Value $ 16,269,580
Aqr Capital Management Llc reports 154.83% increase in ownership of IBKR / Interactive Brokers Group, Inc.

On May 15, 2026 - Aqr Capital Management Llc filed a 13F-HR form disclosing ownership of 242,576 shares of Interactive Brokers Group, Inc. (MX:IBKR) valued at $16,269,580 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 95,193 shares of Interactive Brokers Group, Inc.. This represents a change in shares of 154.83% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 242,576 147,383 154.83 16,270 165.79 0.0014
2026-02-17 2025-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 95,193 20,051 26.68 6,122 18.39 0.0032
2025-11-14 2025-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 75,142 31,389 71.74 5,171 113.28 0.0033
2025-08-14 2025-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 43,753 30,049 219.27 2,424 6.83 0.0020
2025-05-15 2025-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 13,704 2,713 24.68 2,269 16.90 0.0023
2025-02-14 2024-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 10,991 8,529 346.43 1,942 465.89 0.0025
2024-11-14 2024-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 2,462 419 20.51 343 37.20 0.0005
2024-08-14 2024-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 2,043 2,043 250 0.0004
2024-02-14 2023-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -3,495 -100.00 0 -100.00
2023-11-14 2023-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 3,495 129 3.83 303 8.24 0.0006
2023-08-14 2023-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 3,366 -126 -3.61 280 -3.12 0.0006
2023-05-15 2023-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 3,492 180 5.43 288 20.50 0.0006
2023-02-14 2022-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 3,312 3,312 240 0.0005
2020-08-17 2020-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -7,032 -100.00 0 -100.00
2020-05-15 2020-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 7,032 -3,187 -31.19 304 -36.13 0.0005
2020-02-14 2019-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 10,219 -1,307 -11.34 476 -23.23 0.0005
2019-11-14 2019-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 11,526 0 0.00 620 -0.80 0.0007
2019-08-14 2019-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 11,526 0 0.00 625 4.52 0.0007
2019-05-14 2019-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 11,526 -7,204 -38.46 598 -41.60 0.0006
2019-02-14 2018-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 18,730 -38,711 -67.39 1,024 -67.77 0.0012
2018-11-15 2018-09-30 13F/A-1 INTERACTIVE BROKERS GROUP IN COM 45841N107 57,441 -7,716 -11.84 3,177 -24.30 0.0030
2018-11-14 2018-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 65,157 0 4,197
2018-08-14 2018-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 65,157 20,574 46.15 4,197 39.99 0.0042
2018-05-15 2018-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 44,583 0 0.00 2,998 13.56 0.0032
2018-02-14 2017-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 44,583 0 0.00 2,640 31.47 0.0028
2017-11-14 2017-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 44,583 0 0.00 2,008 20.38 0.0024
2017-08-14 2017-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 44,583 0 0.00 1,668 7.75 0.0022
2017-05-15 2017-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 44,583 0 0.00 1,548 -4.91 0.0021
2017-02-14 2016-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 44,583 -16,014 -26.43 1,628 -23.82 0.0022
2016-11-14 2016-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 60,597 -3,497 -5.46 2,137 -5.82 0.0033
2016-08-15 2016-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 64,094 19,511 43.76 2,269 29.44 0.0040
2016-07-29 2016-03-31 13F/A-1 INTERACTIVE BROKERS GROUP IN COM 45841N107 44,583 -1,978 -4.25 1,753 -13.65 0.0032
2016-05-16 2016-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 44,583 1,753
2016-02-16 2015-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 46,561 1,768 3.95 2,030 14.82 0.0036
2015-11-16 2015-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 44,793 4,067 9.99 1,768 4.43 0.0035
2015-08-14 2015-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 40,726 -474 -1.15 1,693 20.76 0.0034
2015-05-15 2015-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 41,200 10,800 35.53 1,402 58.24 0.0032
2015-04-22 2014-12-31 13F/A-1 INTERACTIVE BROKERS GROUP IN COM 45841N107 30,400 -6,500 -17.62 886 -3.80 0.0019
2015-02-17 2014-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 30,400 886
2014-11-14 2014-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 36,900 0 0.00 921 7.22 0.0025
2014-08-14 2014-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 36,900 0 0.00 859 7.38 0.0023
2014-05-15 2014-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 36,900 36,900 800 0.0024
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.