Interactive Brokers Group, Inc.
MX ˙ BMV ˙ US45841N1072
SecurityMX:IBKR / Interactive Brokers Group, Inc.
InstitutionTownsquare Capital Llc
Latest Disclosed Ownership19,320 shares
Latest Disclosed Value $ 1,295,793
Townsquare Capital Llc reports 114.95% increase in ownership of IBKR / Interactive Brokers Group, Inc.

On May 13, 2026 - Townsquare Capital Llc filed a 13F-HR form disclosing ownership of 19,320 shares of Interactive Brokers Group, Inc. (MX:IBKR) valued at $1,295,793 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 8,988 shares of Interactive Brokers Group, Inc.. This represents a change in shares of 114.95% 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)
2026-05-13 2026-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 19,320 10,332 114.95 1,296 124.05 0.2922
2026-02-11 2025-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 8,988 8,988 578 0.1296
2026-02-11 2025-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 8,988 578
2026-02-11 2025-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 8,988 578
2026-02-11 2025-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 8,988 578
2026-02-11 2025-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 8,988 578
2026-02-11 2025-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 8,988 578
2025-08-13 2025-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -6,843 -100.00 0 -100.00
2025-05-12 2025-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 6,843 1,625 31.14 1,133 23.02 0.0121
2025-02-13 2024-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,218 -238 -4.36 922 21.18 0.0104
2024-11-13 2024-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,456 67 1.24 760 15.15 0.0091
2024-08-14 2024-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,389 -29,280 -84.46 661 -82.95 0.0090
2024-05-15 2024-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 34,669 -43,040 -55.39 3,873 -39.89 0.0567
2024-02-15 2023-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 77,709 3,086 4.14 6,442 -0.26 0.1104
2023-11-15 2023-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 74,623 -4,759 -6.00 6,459 -2.05 0.1179
2023-11-13 2023-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 79,382 9,162 13.05 6,594 13.75 0.1201
2023-05-11 2023-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 70,220 14,145 25.23 5,797 42.89 0.1277
2023-02-13 2022-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 56,075 13,368 31.30 4,057 48.61 0.1004
2022-11-14 2022-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 42,707 -3,799 -8.17 2,730 6.72 0.0782
2022-08-08 2022-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 46,506 30,379 188.37 2,558 140.64 0.0726
2022-04-28 2022-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 16,127 -70,696 -81.43 1,063 -84.59 0.0197
2022-04-28 2022-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 50,924 3,356
2022-02-11 2021-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 86,823 3,340 4.00 6,897 32.51 0.1730
2021-11-15 2021-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 83,483 2,264 2.79 5,205 -0.65 0.1500
2021-08-16 2021-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 81,219 15,091 22.82 5,239 8.49 0.1694
2021-05-17 2021-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 66,128 1,766 2.74 4,829 23.19 0.1878
2021-02-16 2020-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 64,362 12,631 24.42 3,920 51.35 0.1744
2020-12-01 2020-09-30 13F/A-2 INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 51,731 18,612 56.20 2,590 57.73 0.1510
2020-11-16 2020-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 33,119 0 1,642 41,761.0126
2020-08-17 2020-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 33,119 803 2.48 1,642 23.83 0.1115
2020-05-18 2020-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 32,316 16,210 100.65 1,326 76.80 0.1072
2020-05-18 2019-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 16,106 2,842 21.43 750 21.56 0.0609
2019-11-14 2019-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 13,264 3,674 38.31 617 28.27 0.0510
2019-08-15 2019-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 9,590 -2,194 -18.62 481 -21.28 0.0458
2019-05-15 2019-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 11,784 4,064 52.64 611 55.08 0.0471
2019-02-12 2018-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 7,720 7,720 394 0.0513
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.