Interactive Brokers IBKR Institutional Ownership

NASDAQ IBKR

$93.05 -0.82 (-0.87%)

As of: Aug 24, 2026 · 3:59 PM EDT

Institutions by Trading Activity

978 Institutions

Increased 533 54.5%

Unchanged 124 12.7%

Reduced 321 32.8%

Ownership Statistics

13F · as of 31 Mar, 2026

Institutional Ownership

37,899.38%

▲+37,812.29 pp QoQ

Shares Held by Institutions

378.99Mn

of 1.00Mn outstanding

▲+20.53% QoQ

Shares Outstanding

1.00Mn

-377.99Mn held outside 13F filers

Institutional Investors

978

filed 13F for Mar 2026

▲+26 vs prior quarter

Net Shares Added (QoQ)

+64.56Mn

accumulated since last quarter

Value of Holdings

$34.32Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 31 Mar, 2026

Interactive Brokers Group, Inc. (NASDAQ:IBKR) has 978 institutional investors with active 13F positions as of March 2026.

They owned 37899.4% of outstanding stock in March 2026, up from 87.1% the prior quarter.
They increased total shares held in Interactive Brokers by 20.53% from the prior quarter, while the number of investors in IBKR increased 31.45% year over year.
Activity in IBKR broke down as 533 buyers, 321 sellers, and 124 unchanged among 978 total holders.
Combined, these investors held 378.99Mn shares in IBKR for March 2026, up by 64.56Mn shares quarter on quarter, and down 31.86Mn shares year over year.
BlackRock, Inc. holds the largest position in IBKR at 31.38Mn shares as of March 31, 2026, or 3137.5% of shares outstanding.
The biggest buyers of Interactive Brokers for the quarter ending March 2026 included VANGUARD CAPITAL MANAGEMENT LLC (28.18Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (14.98Mn), FMR LLC (7.69Mn), TWO SIGMA INVESTMENTS, LP (4.79Mn), Capital World Investors (3.03Mn).
The biggest sellers of Interactive Brokers for the quarter ending March 2026 included Orbis Allan Gray Ltd (3.16Mn), MARSHALL WACE, LLP (2.33Mn), Goldman Sachs Group Inc (1.82Mn), CANTILLON CAPITAL MANAGEMENT LLC (1.51Mn), HSBC HOLDINGS PLC (1.39Mn).
According to Business Quant data, leading holders of IBKR for March 2026 are BlackRock, Inc. (31.38Mn), VANGUARD CAPITAL MANAGEMENT LLC (28.18Mn), State Street Corp (19.09Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (14.98Mn), FMR LLC (12.5Mn), CANTILLON CAPITAL MANAGEMENT LLC (11.25Mn), GEODE CAPITAL MANAGEMENT, LLC (10.44Mn), KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC (10.02Mn), Greenwich Wealth Management LLC (9.92Mn), WELLINGTON MANAGEMENT GROUP LLP (9.77Mn).

Form 13F Holdings

978 Institutional Holders

Report period 31 Mar, 2026

Total shares held 378.99Mn

Of outstanding 37,899.38%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	31,375,037	3,137.50%	▼304,805	-0.96%	$2.10Bn
2	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	28,180,361	2,818.04%	▲28,180,361	0.00%	$1.89Bn
3	State Street Corp	0000093751	19,092,105	1,909.21%	▲255,584	+1.36%	$1.28Bn
4	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	14,984,545	1,498.45%	▲14,984,545	0.00%	$1.01Bn
5	FMR LLC	0000315066	12,501,284	1,250.13%	▲7,692,089	+159.95%	$838.46Mn
6	CANTILLON CAPITAL MANAGEMENT LLC	0001279936	11,245,881	1,124.59%	▼1,514,023	-11.87%	$754.26Mn
7	GEODE CAPITAL MANAGEMENT, LLC	0001214717	10,443,607	1,044.36%	▲240,173	+2.35%	$699.50Mn
8	KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC	0001021223	10,016,215	1,001.62%	▼1,190,538	-10.62%	$671.79Mn
9	Greenwich Wealth Management LLC	0001439805	9,924,043	992.40%	▲738,935	+8.04%	$665.61K
10	WELLINGTON MANAGEMENT GROUP LLP	0000902219	9,774,792	977.48%	▲1,490,574	+17.99%	$655.60Mn
11	Invesco Ltd.	0000914208	9,647,168	964.72%	▲1,358,789	+16.39%	$647.04Mn
12	TWO SIGMA INVESTMENTS, LP	0001179392	8,312,971	831.30%	▲4,786,150	+135.71%	$557.55Mn
13	Jpmorgan Chase & Co	0000019617	6,723,652	672.37%	▼717,164	-9.64%	$428.23Mn
14	Egerton Capital (UK) LLP	0001581811	6,275,179	627.52%	▼664,402	-9.57%	$420.88Mn
15	Bank Of America Corp /De/	0000070858	6,230,136	623.01%	▼438,536	-6.58%	$417.86Mn
16	Orbis Allan Gray Ltd	0001663865	6,118,045	611.80%	▼3,155,690	-34.03%	$410.34Mn
17	London & Capital Asset Management Ltd	0001767559	5,915,803	591.58%	▲54,761	+0.93%	$396.65Mn
18	AMERICAN CENTURY COMPANIES INC	0000748054	5,744,408	574.44%	▼18,452	-0.32%	$385.28Mn
19	Morgan Stanley	0000895421	4,765,572	476.56%	▲244,926	+5.42%	$319.63Mn
20	1832 Asset Management L.P.	0000944388	4,454,154	445.42%	▼573,762	-11.41%	$298.74Mn

Showing 1 to 20 of 978 holders