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Wednesday, December 9, 2009, 2:25PM ET - U.S. Markets close in 1 hour and 35 minutes. Dow Up 0.03% Nasdaq Down 0.16%
Interactive Brokers Group, Inc. (IBKR)At 2:10PM ET: 17.35  Down 0.04 (0.23%)  
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Major HoldersGet Major Holders for:
BREAKDOWN
% of Shares Held by All Insider and 5% Owners: 7%
% of Shares Held by Institutional & Mutual Fund Owners: 78%
% of Float Held by Institutional & Mutual Fund Owners: 84%
Number of Institutions Holding Shares: 137

MAJOR DIRECT HOLDERS (FORMS 3 & 4)
HolderSharesReported
TCV VII LPN/A6-Aug-09
TCV VI L PN/A6-Aug-09
GALIK MILAN52,3759-May-09
HARRIS LAWRENCE E30,4641-May-09
BRODY PAUL JONATHAN17,6039-May-09


TOP INSTITUTIONAL HOLDERS
HolderShares% OutValue*Reported
BAMCO INC.1,992,3004.83$39,587,00130-Sep-09
VANGUARD GROUP, INC. (THE)1,589,9943.86$31,593,18030-Sep-09
Technology Crossover Management VI, L.L.C.1,500,0003.64$29,805,00030-Sep-09
EMINENCE CAPITAL, L.L.C.1,500,0003.64$29,805,00030-Sep-09
Barclays Global Investors UK Holdings Ltd1,332,0903.23$26,468,62830-Sep-09
Susquehanna International Group, LLP834,6852.03$16,585,19030-Sep-09
FMR LLC5,310,19312.88$105,513,53430-Sep-09
PRICE (T.ROWE) ASSOCIATES INC5,118,90012.42$101,712,54330-Sep-09
FIL LTD805,0111.95$15,995,56830-Sep-09
SOUTHPOINT CAPITAL ADVISORS LP800,0001.94$15,896,00030-Sep-09

TOP MUTUAL FUND HOLDERS
HolderShares% OutValue*Reported
PRICE (T.ROWE) MID CAP GROWTH FUND3,500,0008.49$69,545,00030-Sep-09
BARON PARTNERS FUND1,900,0004.61$37,753,00030-Sep-09
METROPOLITAN SER FD-FI MIDCAP OPPORTUNITIES PORT834,5022.02$12,959,81630-Jun-09
PENNSYLVANIA MUTUAL FUND INC560,3001.36$8,701,45930-Jun-09
VANGUARD SMALL-CAP INDEX FUND495,5131.20$7,695,31630-Jun-09
STRATTON SMALL-CAP VALUE FUND459,0001.11$7,128,27030-Jun-09
VANGUARD TOTAL STOCK MARKET INDEX FUND376,922.91$5,853,59830-Jun-09
VANGUARD STRATEGIC EQUITY FUND361,024.88$5,606,70230-Jun-09
RiverSource Growth Fd313,531.76$5,891,24731-Jul-09
VANGUARD SMALL-CAP GROWTH INDEX FUND313,502.76$4,868,68630-Jun-09

View Transactions for Insiders & Institutional Holders
* Value shown is computed using the security's price on the report date given.


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