What does CUSIP 45841N107 represent in this 13F holders report?

CUSIP 45841N107 is the security identifier for IBKR - Interactive Brokers Group, Inc. - Common Stock used to aggregate holder disclosures.

How many institutions held IBKR - Interactive Brokers Group, Inc. - Common Stock in Q1 2020?

218 institutional investors reported IBKR - Interactive Brokers Group, Inc. - Common Stock for Q1 2020. Use the holders table for investor-level position and value details.

Interactive Brokers Group, Inc. - Common Stock (IBKR)

CUSIP: 45841N107

Q1 2020 13F Holders as of 31 Mar 2020

Type / Class: Equity / Common Stock
Shares outstanding: 445,757,274
Total 13F shares: 69,442,047
Share change: +521,217
Total reported value: $2,995,722,845
Put/Call ratio: 228%
Price per share: $43.17
Number of holders: 218
Value change: +$16,641,420
Number of buys: 114
Number of sells: 105

Security key

45841N107

Report period

Q1 2020

Institutions

218

Top holders

IBKR full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2020 Previous quarter: Q4 2019 Interactive Brokers Group, Inc. SEC filings Interactive Brokers Group, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 45841N107

Newer quarter: Q2 2020 Previous quarter: Q4 2019

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top shareholders of IBKR - Interactive Brokers Group, Inc. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Lead holder

Bares Capital Management,...

13D/G signal

—

Evidence rows

Latest as of

31 Dec 2019

13F Lead comparable stake: 1.7% Showing first 8 of 50 holder rows. Open remaining rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Bares Capital Management, Inc.	13F Company 13F	1.7%	$348,420,000 7,473,615 shares	—	31 Dec 2019
BAILLIE GIFFORD & CO	13F Company 13F	1.6%	$337,511,000 7,239,630 shares	—	31 Dec 2019
BlackRock Finance, Inc.	13F Company 13F	1.5%	$314,014,000 6,735,624 shares	—	31 Dec 2019
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC	13F Company 13F	1.3%	$271,007,000 5,813,101 shares	—	31 Dec 2019
VANGUARD GROUP INC	13F Company 13F	1.3%	$265,672,000 5,698,664 shares	—	31 Dec 2019
CANTILLON CAPITAL MANAGEMENT LLC	13F Company 13F	0.56%	$116,664,000 2,502,438 shares	—	31 Dec 2019
Echinus Advisors, LLC	13F Company 13F	0.54%	$112,425,000 2,411,525 shares	—	31 Dec 2019
Select Equity Group, L.P.	13F Company 13F	0.48%	$100,452,720 2,154,713 shares	—	31 Dec 2019

Show 42 additional holder rows in the full holder list

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
STATE STREET CORP	13F Company 13F	0.4%	$82,731,000 1,774,582 shares	—	31 Dec 2019
TPG Group Holdings (SBS) Advisors, Inc.	13F Company 13F	0.36%	$75,655,000 1,622,805 shares	—	31 Dec 2019
Ancient Art, L.P.	13F Company 13F	0.36%	$75,491,000 1,619,273 shares	—	31 Dec 2019
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	0.34%	$70,552,000 1,513,352 shares	—	31 Dec 2019
CAT ROCK CAPITAL MANAGEMENT LP	13F Company 13F	0.28%	$57,889,000 1,241,731 shares	—	31 Dec 2019
Arlington Value Capital, LLC	13F Company 13F	0.26%	$54,776,000 1,174,950 shares	—	31 Dec 2019
JARISLOWSKY, FRASER Ltd	13F Company 13F	0.19%	$39,554,000 848,438 shares	—	31 Dec 2019
GEODE CAPITAL MANAGEMENT, LLC	13F Company 13F	0.19%	$39,019,000 836,960 shares	—	31 Dec 2019
Bank of New York Mellon Corp	13F Company 13F	0.19%	$38,838,000 833,091 shares	—	31 Dec 2019
Bronte Capital Management Pty Ltd.	13F Company 13F	0.17%	$34,405,000 737,990 shares	—	31 Dec 2019
Mitsubishi UFJ Trust & Banking Corp	13F Company 13F	0.16%	$33,509,000 718,775 shares	—	31 Dec 2019
WELLS FARGO & COMPANY/MN	13F Company 13F	0.15%	$32,073,000 687,974 shares	—	31 Dec 2019
Park West Asset Management LLC	13F Company 13F	0.13%	$28,003,000 600,658 shares	—	31 Dec 2019
Greenwich Wealth Management LLC	13F Company 13F	0.13%	$27,800,000 596,303 shares	—	31 Dec 2019
NORTHERN TRUST CORP	13F Company 13F	0.13%	$27,476,000 589,370 shares	—	31 Dec 2019
MONTRUSCO BOLTON INVESTMENTS INC.	13F Company 13F	0.12%	$24,466,000 541,837 shares	—	31 Dec 2019
Amova Asset Management Americas, Inc.	13F Company 13F	0.12%	$24,565,000 526,930 shares	—	31 Dec 2019
Sumitomo Mitsui Trust Group, Inc.	13F Company 13F	0.12%	$24,565,000 526,930 shares	—	31 Dec 2019
NORGES BANK	13F Company 13F	0.11%	$22,198,000 476,154 shares	—	31 Dec 2019
BLOOM TREE PARTNERS, LLC	13F Company 13F	0.1%	$20,699,000 444,000 shares	—	31 Dec 2019
Ensign Peak Advisors, Inc	13F Company 13F	0.1%	$20,401,000 437,609 shares	—	31 Dec 2019
ASSETMARK, INC	13F Company 13F	0.09%	$19,179,000 411,397 shares	—	31 Dec 2019
Grantham, Mayo, Van Otterloo & Co. LLC	13F Company 13F	0.09%	$18,404,000 394,772 shares	—	31 Dec 2019
Oakcliff Capital Partners, LP	13F Company 13F	0.09%	$17,900,000 383,955 shares	—	31 Dec 2019
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F Company 13F	0.08%	$15,897,000 340,989 shares	—	31 Dec 2019
PRINCIPAL FINANCIAL GROUP INC	13F Company 13F	0.07%	$15,192,000 325,863 shares	—	31 Dec 2019
Invesco Ltd.	13F Company 13F	0.06%	$12,576,000 269,751 shares	—	31 Dec 2019
Anavon Capital LLP	13F Company 13F	0.06%	$11,697,000 250,900 shares	—	31 Dec 2019
GOLDMAN SACHS GROUP INC	13F Company 13F	0.06%	$11,647,000 249,832 shares	—	31 Dec 2019
Nuveen Asset Management, LLC	13F Company 13F	0.06%	$11,572,000 248,226 shares	—	31 Dec 2019
Mercator Fund (Cayman Master) LP	13F Company 13F	0.06%	$11,481,000 246,275 shares	—	31 Dec 2019
Sycale Advisors (NY) LLC	13F Company 13F	0.06%	$11,481,000 246,275 shares	—	31 Dec 2019
THRIVENT FINANCIAL FOR LUTHERANS	13F Company 13F	0.05%	$11,328,000 243,001 shares	—	31 Dec 2019
TRAN CAPITAL MANAGEMENT, L.P.	13F Company 13F	0.04%	$8,964,000 192,285 shares	—	31 Dec 2019
MILLENNIUM MANAGEMENT LLC	13F Company 13F	0.04%	$8,918,000 191,301 shares	—	31 Dec 2019
RHUMBLINE ADVISERS	13F Company 13F	0.04%	$8,401,000 180,207 shares	—	31 Dec 2019
GABELLI FUNDS LLC	13F Company 13F	0.04%	$8,310,000 178,249 shares	—	31 Dec 2019
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F Company 13F	0.04%	$8,277,000 177,535 shares	—	31 Dec 2019
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F Company 13F	0.04%	$7,567,000 162,308 shares	—	31 Dec 2019
AMERIPRISE FINANCIAL INC	13F Company 13F	0.04%	$7,546,000 161,865 shares	—	31 Dec 2019
NEW YORK STATE COMMON RETIREMENT FUND	13F Company 13F	0.04%	$7,342,000 157,493 shares	—	31 Dec 2019
MORGAN STANLEY	13F Company 13F	0.03%	$7,235,000 155,181 shares	—	31 Dec 2019

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2020

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

218

69,442,047

Rows loaded

218

Investor	Option	Weight %	Change %	Reported value	* Price	Shares	Share Change	Activity	Report Period

* Reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. An asterisk next to the price means the price is likely invalid.

Compare Q1 2020 vs Q4 2019 Across Filers

Q4 2019 holders

239

Q1 2020 holders

218

Holder diff

-21

Investor	Q4 2019 Shares	Q1 2020 Shares	Share Diff	Share Chg %	Q4 2019 value	Q1 2020 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend