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 2015?

173 institutional investors reported IBKR - Interactive Brokers Group, Inc. - Common Stock for Q1 2015. Use the holders table for investor-level position and value details.

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

CUSIP: 45841N107

Q1 2015 13F Holders as of 31 Mar 2015

Type / Class: Equity / Common Stock
Shares outstanding: 445,757,274
Total 13F shares: 46,179,529
Share change: +1,479,294
Total reported value: $1,570,325,307
Put/Call ratio: 171%
Price per share: $34.02
Number of holders: 173
Value change: +$56,293,626
Number of buys: 104
Number of sells: 60

Security key

45841N107

Report period

Q1 2015

Institutions

173

Top holders

IBKR full security history Newer quarter: Q2 2015 Previous quarter: Q4 2014 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 2015 Previous quarter: Q4 2014

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 the largest verified stakes, then open the linked filing trail.

Lead holder

Kylin Management LLC

13D/G signal

—

Evidence rows

Latest as of

31 Dec 2014

13F Lead comparable stake: 1.1%

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Kylin Management LLC	13F Company 13F	1.1%	$139,896,000 4,797,539 shares	—	31 Dec 2014
VANGUARD GROUP INC	13F Company 13F	0.82%	$106,083,000 3,637,972 shares	—	31 Dec 2014
FMR LLC	13F Company 13F	0.77%	$99,898,000 3,425,883 shares	—	31 Dec 2014
Ancient Art, L.P.	13F Company 13F	0.76%	$99,245,000 3,403,458 shares	—	31 Dec 2014
RS INVESTMENT MANAGEMENT CO LLC	13F Company 13F	0.66%	$85,684,000 2,938,424 shares	—	31 Dec 2014
BlackRock Fund Advisors	13F Company 13F	0.57%	$74,199,000 2,544,560 shares	—	31 Dec 2014
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	0.49%	$64,261,000 2,203,723 shares	—	31 Dec 2014
RUANE, CUNNIFF & GOLDFARB INC	13F Company 13F	0.39%	$50,629,000 1,736,264 shares	—	31 Dec 2014
Grantham, Mayo, Van Otterloo & Co. LLC	13F Company 13F	0.31%	$40,408,000 1,385,751 shares	—	31 Dec 2014
Arlington Value Capital, LLC	13F Company 13F	0.29%	$37,182,000 1,275,096 shares	—	31 Dec 2014
BlackRock Institutional Trust Company, N.A.	13F Company 13F	0.26%	$33,864,000 1,161,320 shares	—	31 Dec 2014
Passport Capital, LLC	13F Company 13F	0.23%	$30,330,000 1,040,135 shares	—	31 Dec 2014
TPG Group Holdings (SBS) Advisors, Inc.	13F Company 13F	0.22%	$27,956,000 958,702 shares	—	31 Dec 2014
Apex Capital Management	13F Company 13F	0.18%	$23,091,000 791,873 shares	—	31 Dec 2014
STATE STREET CORP	13F Company 13F	0.16%	$21,321,000 731,305 shares	—	31 Dec 2014
Quinn Opportunity Partners LLC	13F Company 13F	0.13%	$16,790,000 575,815 shares	—	31 Dec 2014
MORGAN STANLEY	13F Company 13F	0.12%	$15,673,000 537,477 shares	—	31 Dec 2014
DELTA PARTNERS LP	13F Company 13F	0.11%	$14,110,000 483,890 shares	—	31 Dec 2014
Bank of New York Mellon Corp	13F Company 13F	0.1%	$13,195,000 452,493 shares	—	31 Dec 2014
PUTNAM INVESTMENTS LLC	13F Company 13F	0.1%	$12,647,000 433,700 shares	—	31 Dec 2014
CORNERSTONE CAPITAL MANAGEMENT HOLDINGS LLC.	13F Company 13F	0.09%	$11,785,000 404,146 shares	—	31 Dec 2014
BOSTON PROVIDENT, L.P.	13F Individual 13F	0.08%	$10,755,000 368,832 shares	—	31 Dec 2014
PRINCIPAL FINANCIAL GROUP INC	13F Company 13F	0.08%	$10,326,000 354,130 shares	—	31 Dec 2014
NORGES BANK	13F Company 13F	0.07%	$9,151,000 313,835 shares	—	31 Dec 2014
MSF Capital, LLC	13F Company 13F	0.07%	$8,960,000 307,247 shares	—	31 Dec 2014
GEODE CAPITAL MANAGEMENT, LLC	13F Company 13F	0.07%	$8,944,000 306,725 shares	—	31 Dec 2014
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F Company 13F	0.07%	$8,660,000 296,979 shares	—	31 Dec 2014
RENAISSANCE TECHNOLOGIES LLC	13F Company 13F	0.07%	$8,453,000 289,900 shares	—	31 Dec 2014
WELLINGTON MANAGEMENT GROUP LLP	13F Company 13F	0.06%	$8,223,000 282,013 shares	—	31 Dec 2014
NORTHERN TRUST CORP	13F Company 13F	0.06%	$7,723,000 264,848 shares	—	31 Dec 2014
GOLDMAN SACHS GROUP INC	13F Company 13F	0.06%	$7,713,000 264,511 shares	—	31 Dec 2014
AMERIPRISE FINANCIAL INC	13F Company 13F	0.06%	$7,580,000 259,947 shares	—	31 Dec 2014
Greenwich Wealth Management LLC	13F Company 13F	0.06%	$7,165,000 245,716 shares	—	31 Dec 2014
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F Company 13F	0.05%	$6,616,000 226,882 shares	—	31 Dec 2014
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F Company 13F	0.05%	$6,801,000 220,383 shares	—	31 Dec 2014
MANAGED ACCOUNT ADVISORS LLC	13F Company 13F	0.05%	$6,156,000 211,124 shares	—	31 Dec 2014
DEUTSCHE BANK AG\	13F Company 13F	0.05%	$6,062,000 207,948 shares	—	31 Dec 2014
Lombard Odier Asset Management (USA) Corp	13F Company 13F	0.04%	$5,832,000 200,000 shares	—	31 Dec 2014
BOGLE INVESTMENT MANAGEMENT L P /DE/	13F Company 13F	0.04%	$5,201,000 178,361 shares	—	31 Dec 2014
NEW YORK STATE COMMON RETIREMENT FUND	13F Company 13F	0.04%	$4,994,000 171,257 shares	—	31 Dec 2014
CAXTON ASSOCIATES LP	13F Company 13F	0.04%	$4,741,000 162,592 shares	—	31 Dec 2014
GAM Holding AG	13F Company 13F	0.04%	$4,674,000 160,300 shares	—	31 Dec 2014
GABELLI FUNDS LLC	13F Company 13F	0.03%	$4,316,000 148,000 shares	—	31 Dec 2014
BRIDGEWAY CAPITAL MANAGEMENT, LLC	13F Company 13F	0.03%	$4,138,000 141,900 shares	—	31 Dec 2014
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F Company 13F	0.03%	$4,062,000 139,300 shares	—	31 Dec 2014
TIAA CREF INVESTMENT MANAGEMENT LLC	13F Company 13F	0.03%	$3,978,000 136,407 shares	—	31 Dec 2014
Cupps Capital Management, LLC	13F Company 13F	0.03%	$3,962,000 135,900 shares	—	31 Dec 2014
JPMORGAN CHASE & CO	13F Company 13F	0.03%	$3,753,000 128,700 shares	—	31 Dec 2014
PRUDENTIAL FINANCIAL INC	13F Company 13F	0.03%	$3,701,000 126,919 shares	—	31 Dec 2014
COMERICA BANK	13F Company 13F	0.03%	$3,312,000 113,572 shares	—	31 Dec 2014

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 2015

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

Institutions

173

46,179,529

Rows loaded

173

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2015 vs Q4 2014 Across Filers

Q4 2014 holders

150

Q1 2015 holders

173

Holder diff

Investor	Q4 2014 Shares	Q1 2015 Shares	Share Diff	Share Chg %	Q4 2014 Value $	Q1 2015 Value $	Value Diff $	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.