| 15.78 Data as of May 17 |  +0.16 / +1.02%Today’s Change | 13.01 Today|||52-Week Range 15.98 | +15.35% Year-to-Date |
| Other institutional | 53.26% |
| Mutual fund holders | 32.86% |
| Individual stakeholders | 10.79% |
| 3/31/2013 | PYRAMIS GLOBAL ADVISORS LLC Bought 1.4 Million shares of Interactive Brokers Group... |
| 3/31/2013 | ING INVESTMENT MANAGEMENT ADVISO... Bought 1.3 Million shares of Interactive Brokers Group... |
| 3/31/2013 | ANCIENT ART LP Bought 1.1 Million shares of Interactive Brokers Group... |
| Stockholder | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| Pyramis Global Advisors LLC | 12.51% | 5,940,611 | 89,465,602 | +1,371,729 | +30.02% |
| RS Investment Management Co. LLC | 7.74% | 3,677,831 | 55,388,135 | +68,773 | +1.91% |
| BlackRock Fund Advisors | 5.76% | 2,737,579 | 41,227,940 | +360,833 | +15.18% |
| The Vanguard Group, Inc. | 5.50% | 2,612,223 | 39,340,078 | -37,170 | -1.40% |
| Ancient Art LP | 4.73% | 2,247,953 | 33,854,172 | +1,127,006 | +100.54% |
| ING Investment Management Advisor... | 4.71% | 2,238,000 | 33,704,280 | +1,258,000 | +128.37% |
| Citadel Advisors LLC | 3.43% | 1,631,053 | 24,563,658 | +140,150 | +9.40% |
| Dimensional Fund Advisors, Inc. | 2.81% | 1,335,998 | 20,120,130 | +87,259 | +6.99% |
| Susquehanna Investment Group LLC | 2.81% | 1,333,539 | 20,083,097 | -1,282 | -0.10% |
| Fidelity Management & Research Co... | 2.29% | 1,085,767 | 16,351,651 | +84,151 | +8.40% |
| Mutual fund | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| RS Partners Fund | 3.80% | 1,804,400 | 27,174,264 | 0 | 0.00% |
| ING (L) - Invest US High Dividend | 2.67% | 1,269,000 | 19,111,140 | +289,000 | +29.49% |
| Fidelity Advisor Stock Selector M... | 2.29% | 1,085,767 | 16,351,651 | +123,200 | +12.80% |
| Vanguard Small Cap Index Fund | 1.66% | 789,256 | 11,886,195 | +52,072 | +7.06% |
| Royce Pennsylvania Mutual Fund | 1.66% | 788,600 | 11,876,316 | 0 | 0.00% |
| iShares Core S&P Small Cap ETF | 1.49% | 709,775 | 10,689,212 | +15,550 | +2.24% |
| Vanguard Total Stock Market Index... | 1.31% | 623,926 | 9,396,326 | +57,291 | +10.11% |
| DWS Small Cap Value Fund | 1.31% | 621,221 | 9,355,588 | -4,800 | -0.77% |
| Vanguard Small Cap Value Index Fu... | 0.94% | 447,224 | 6,735,193 | +42,050 | +10.38% |
| DFA US Micro Cap Portfolio | 0.76% | 362,686 | 5,462,051 | +49,459 | +15.79% |
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