Interactive Brokers Group Ownership | Who Owns Interactive Brokers Group?

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Interactive Brokers Group Ownership Summary

Interactive Brokers Group is owned by 87.71% institutional investors, 2.67% insiders, and 9.63% retail investors. Vanguard group is the largest institutional shareholder, holding 11.73% of IBKR shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 3.22% of its assets in Interactive Brokers Group shares.

IBKR Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Interactive Brokers Group	87.71%	2.67%	9.63%
Sector	Financial Services Stocks	736.16%	13.84%	-650.00%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	52.25M	11.73%	$3.36B
Blackrock	9.30M	8.69%	$1.14B
Blackrock funding, inc. /de	33.13M	7.44%	$2.88B
Vanguard capital management	28.35M	6.36%	$2.47B
State street	19.44M	4.36%	$1.69B
Fmr	11.83M	2.66%	$1.03B
Geode capital management	10.64M	2.39%	$925.47M
Greenwich wealth management	9.92M	2.23%	$863.59M
Invesco	9.71M	2.18%	$845.07M
Two sigma investments, lp	8.34M	1.87%	$725.95M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Oakcliff capital partners, lp	1.03M	33.42%	$89.72M
Greenwich wealth management	9.92M	31.48%	$863.59M
Hengistbury investment partners llp	1.01M	28.22%	$87.78M
Systrade	500.00K	27.24%	$43.52M
Ancient art	1.29M	22.86%	$111.86M
Brooktree capital management	261.63K	14.86%	$22.77M
Crocodile capital partners gmbh	227.23K	13.45%	$19.78M
Bares capital management	2.06M	13.08%	$141.79M
Lansing management lp	245.72K	12.95%	$21.39M
Rv capital	561.09K	12.75%	$48.84M

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	6.33M	0.06%	6.33M
Ninety one uk	5.26M	1.02%	5.26M
Sixth street partners management company	3.84M	0.04%	3.84M
Viking global investors lp	4.83M	1.20%	3.44M
Blackrock funding, inc. /de	33.13M	0.04%	1.75M

Top Sellers

Holder	Shares	% Assets	Change
Cantillon capital management	517.83K	6.78%	-10.73M
Kayne anderson rudnick investment management	6.37M	1.72%	-3.65M
Wellington management group llp	7.38M	0.11%	-2.39M
Egerton capital (uk) llp	4.13M	3.47%	-2.15M
Jpmorgan chase	5.19M	0.03%	-1.54M

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	6.33M	0.06%	6.33M	$551.33M
Ninety one uk	5.26M	1.02%	5.26M	$457.72M
Sixth street partners management company	3.84M	0.04%	3.84M	$334.11M
Agf management	1.45M	0.49%	1.45M	$126.38M
Lone pine capital	577.67K	0.31%	577.67K	$50.28M

Sold Out

Holder	Change
Curio wealth	-1.00
Blume capital management	-2.00
Northwest financial advisors	-2.00
Claris advisors, llc / mo /	-2.00
Castleview partners	-3.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	1,147	10.50%	390,692,113	3.02%	87	1.21%	584	8.15%	386	16.62%
Mar 31, 2026	616	-39.19%	125,621,455	-67.26%	28	0.38%	340	-30.89%	178	-48.70%
Dec 31, 2025	716	-24.95%	254,998,782	-32.75%	57	0.77%	337	-33.79%	251	-16.33%
Sep 30, 2025	704	-14.77%	261,205,947	-29.31%	59	0.84%	374	-51.43%	227	1094.74%
Jun 30, 2025	831	6.40%	376,882,120	302.56%	85	1.16%	772	91.56%	18	-92.94%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Mid-Cap ETF	14.20M	3.22%	-25.52K
Vanguard Total Stock Mkt Idx Inv	13.44M	3.02%	-29.89K
Vanguard Morn Total Stk Mkt Idx Investor	13.44M	3.02%	-29.89K
Vanguard US Total Market Shares ETF	3.27M	3.00%	53.98K
Vanguard 500 Index Investor	11.57M	2.60%	-87.45K
iShares Core S&P 500 ETF	6.01M	1.33%	9.58K
Fidelity 500 Index	5.71M	1.28%	15.47K
State Street® SPDR® S&P 500® ETF	5.50M	1.22%	4.64K
SPDR® S&P 500® ETF	5.26M	1.18%	64.77K
Fidelity Magellan	5.19M	1.17%	-236.10K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 03, 2026	Conkling Lori A	-	Buy	$2.18K
Jul 01, 2026	Conkling Lori A	-	Buy	$2.20K
Jun 01, 2026	Conkling Lori A	-	Buy	$2.15K
May 01, 2026	Conkling Lori A	-	Buy	$1.99K
Apr 28, 2026	Harris Lawrence E	-	Sell	$2.00M

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	2	-
2026 Q2	3	1
2026 Q1	2	8
2025 Q4	1	5
2025 Q3	-	64

IBKR Ownership FAQ

Who owns the most shares of Interactive Brokers Group?

Interactive Brokers Group’s largest shareholders are Vanguard group (52.25M shares, 11.73%), Blackrock (9.3M shares, 8.69%), and Blackrock funding, inc. /de (33.13M shares, 7.44%). Together, they hold 27.86% of Interactive Brokers Group’s total shares outstanding.

Does Blackrock own Interactive Brokers Group?

Yes, BlackRock owns 8.69% of Interactive Brokers Group, totaling 9.3M shares as of Jun 2024. This represents 0.03% of BlackRock's total assets, with a market value of 1.14B$. In the last quarter, BlackRock increased its holdings by 210.61K shares, a 2.32% change.

Who is Interactive Brokers Group’s biggest shareholder by percentage of total assets invested?

Oakcliff capital partners, lp is Interactive Brokers Group’s biggest shareholder by percentage of total assets invested, with 33.42% of its assets in 1.03M Interactive Brokers Group shares, valued at 89.72M$.

Who is the top mutual fund holder of Interactive Brokers Group shares?

iShares Core S&P Mid-Cap ETF is the top mutual fund holder of Interactive Brokers Group shares, with 3.22% of its total shares outstanding invested in 14.2M Interactive Brokers Group shares.

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