Interactive Brokers Group, Inc.
MX ˙ BMV ˙ US45841N1072
SecurityMX:IBKR / Interactive Brokers Group, Inc.
InstitutionBoothbay Fund Management, Llc
Latest Disclosed Ownership69,876 shares
Latest Disclosed Value $ 4,686,583
Boothbay Fund Management, Llc ownership in IBKR / Interactive Brokers Group, Inc.

On May 15, 2026 - Boothbay Fund Management, Llc filed a 13F-HR form disclosing ownership of 69,876 shares of Interactive Brokers Group, Inc. (MX:IBKR) valued at $4,686,583 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 14, 2023 disclosing 0 shares of Interactive Brokers Group, Inc..

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 69,876 69,876 4,687 0.0607
2023-08-14 2023-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -30,100 -100.00 0 -100.00
2023-05-15 2023-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 30,100 30,100 2,485 0.0510
2023-02-14 2022-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -3,262 -100.00 0 -100.00
2022-11-14 2022-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 3,262 -2,673 -45.04 208 -36.20 0.0052
2022-08-15 2022-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,935 -660 -10.01 326 -25.06 0.0086
2022-05-16 2022-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 6,595 6,595 435 0.0101
2022-02-14 2021-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -3,344 -100.00 0 -100.00
2021-11-15 2021-09-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 3,344 -2,643 -44.15 208 -47.21 0.0058
2021-08-17 2021-06-30 13F/A-1 INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,987 5,987 394 0.0127
2021-08-16 2021-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,987 5,987 394 0.0124
2020-05-15 2020-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 0 -5,200 -100.00 0 -100.00
2020-02-14 2019-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 5,200 0 0.00 242 -13.57 0.0211
2019-11-14 2019-09-30 13F Interactive Brokers Group COM CL A 45841N107 5,200 1,123 27.54 280 26.70 0.0257
2019-08-14 2019-06-30 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 4,077 77 1.93 221 6.25 0.0201
2019-05-15 2019-03-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 4,000 0 0.00 208 -5.02 0.0202
2019-02-14 2018-12-31 13F INTERACTIVE BROKERS GROUP IN COM CL A 45841N107 4,000 4,000 0.00 219 5.29 0.0319
2018-02-14 2017-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 0 -6,800 -100.00 0 -100.00
2017-11-14 2017-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 6,800 -72 -1.05 306 19.07 0.0509
2017-08-14 2017-06-30 13F INTERACTIVE BROKERS COM 45841N107 6,872 -3,024 -30.56 257 -25.29 0.0534
2017-05-15 2017-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 9,896 2,447 32.85 344 26.47 0.0641
2017-07-18 2016-12-31 13F/A-2 INTERACTIVE BROKERS GROUP IN COM 45841N107 7,449 7,449 -24.73 272 -20.93 0.0619
2017-02-16 2016-12-31 13F/A-1 INTERACTIVE BROKERS GROUP IN COM 45841N107 7,449 0 272 0.0672
2017-02-15 2016-12-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 7,449 272
2016-11-14 2016-09-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 0 -12,220 -100.00 0 -100.00
2017-07-18 2016-06-30 13F/A-1 INTERACTIVE BROKERS GROUP IN COM 45841N107 12,220 3,629 42.24 433 28.11 0.2141
2016-08-15 2016-06-30 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 12,220 433
2017-07-18 2016-03-31 13F/A-3 INTERACTIVE BROKERS GROUP IN COM 45841N107 8,591 8,591 338 0.2660
2016-05-16 2016-03-31 13F INTERACTIVE BROKERS GROUP IN COM 45841N107 8,591 338 0.1156
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.