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 Q3 2021?

294 institutional investors reported IBKR - Interactive Brokers Group, Inc. - Common Stock for Q3 2021. Use the holders table for investor-level position and value details.

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

CUSIP: 45841N107

Q3 2021 13F Holders as of 30 Sep 2021

Security type / class: Equity / Common Stock
Total 13F shares: 81,939,700
Total 13F value: $5,112,239,576
Share change: +1,984,214
Put/Call ratio: 107%
SEC-reported price per share: $62.34
Number of holders: 294
Value change: +$116,084,815
Number of buys: 165
Number of sells: 119
Shares outstanding: 445,757,274

Security key

45841N107

Report period

Q3 2021

Institutions

294

Top holders

IBKR full security history Ownership snapshot Full 13F holder table Interactive Brokers Group, Inc. SEC filings Interactive Brokers Group, Inc. company facts

Broader feeds

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Ownership snapshot

Top reported holders 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.

Comparable stake leader

KAYNE ANDERSON RUDNICK IN...

Disclosed value leader

KAYNE ANDERSON RUDNICK IN...

Comparable rows

0/15

Latest evidence

30 Jun 2021

13F Highest disclosed value: $575,276,000 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC has the largest disclosed position value at $575.28M.

0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC's linked filing trail.

Disclosed position value Top 5

KAYNE ANDERSON RUDNICK INVESTMENT... $575.28M

Greenwich Wealth Management LLC $494.19M

BlackRock Finance, Inc. $480.38M

VANGUARD GROUP INC $477.38M

Bares Capital Management, Inc. $335.08M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC	13F Company 13F	— denominator unverified	$575,276,000 8,752,100 shares	—	30 Jun 2021
Greenwich Wealth Management LLC	13F Company 13F	— denominator unverified	$494,187,000 7,518,444 shares	—	30 Jun 2021
BlackRock Finance, Inc.	13F Company 13F	— denominator unverified	$480,385,000 7,308,467 shares	—	30 Jun 2021
VANGUARD GROUP INC	13F Company 13F	— denominator unverified	$477,377,000 7,262,687 shares	—	30 Jun 2021
Bares Capital Management, Inc.	13F Company 13F	— denominator unverified	$335,078,000 5,097,799 shares	—	30 Jun 2021
Select Equity Group, L.P.	13F Company 13F	— denominator unverified	$283,436,239 4,312,129 shares	—	30 Jun 2021

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 Q3 2021

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

Institutions

294

81,939,700

Rows available

294

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-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. The marker flags a reported price that did not pass the local price check.

Compare Q3 2021 vs Q2 2021 Across Filers

Q2 2021 holders

308

Q3 2021 holders

294

Holder diff

-14

Investor	Q2 2021 Shares	Q3 2021 Shares	Share Diff	Share Chg %	Q2 2021 value	Q3 2021 value	Value change	Value Chg %