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SPARK LP
> IBKR
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 03/31/2012 | Interactive Brokers Group, Inc. | IBKR | 137,900 | 55,900 | 2,344,000 | 1,119,000 | $17.00 |
| 12/31/2011 | Interactive Brokers Group, Inc. | IBKR | 82,000 | 33,100 | 1,225,000 | 545,000 | $14.94 |
| 09/30/2011 | Interactive Brokers Group, Inc. | IBKR | 48,900 | -47,400 | 680,000 | -827,000 | $13.91 |
| 06/30/2011 | Interactive Brokers Group, Inc. | IBKR | 96,300 | 0 | 1,507,000 | -21,000 | $15.65 |
| 03/31/2011 | Interactive Brokers Group, Inc. | IBKR | 96,300 | 17,100 | 1,528,000 | 119,000 | $15.87 |
| 12/31/2010 | Interactive Brokers Group, Inc. | IBKR | 79,200 | 55,000 | 1,409,000 | 981,000 | $17.79 |
| 12/31/2009 | Interactive Brokers Group, Inc. | IBKR | 24,200 | 0 | 428,000 | -52,000 | $17.69 |
| 09/30/2009 | Interactive Brokers Group, Inc. | IBKR | 24,200 | -13,400 | 480,000 | -103,000 | $19.83 |
| 06/30/2009 | Interactive Brokers Group, Inc. | IBKR | 37,600 | 23,100 | 583,000 | 350,000 | $15.51 |
| 03/31/2009 | Interactive Brokers Group, Inc. | IBKR | 14,500 | 14,500 | 233,000 | 233,000 | $16.07 |
| 12/31/2008 | Interactive Brokers Group, Inc. | IBKR | 45,900 | 21,310 | 820,000 | 260,000 | $17.86 |
| 09/30/2008 | Interactive Brokers Group, Inc. | IBKR | 24,590 | 4,190 | 560,000 | -95,000 | $22.77 |
| 06/30/2008 | Interactive Brokers Group, Inc. | IBKR | 20,400 | 0 | 655,000 | 133,000 | $32.11 |
| 03/31/2008 | Interactive Brokers Group, Inc. | IBKR | 20,400 | 20,400 | 522,000 | 522,000 | $25.59 |
| 12/31/2007 | Interactive Brokers Group, Inc. | IBKR | 0 | -50,408 | 0 | -1,364,000 | |
| 09/30/2007 | Interactive Brokers Group, Inc. | IBKR | 0 | -50,408 | 0 | -1,364,000 | |
| 06/30/2007 | Interactive Brokers Group, Inc. | IBKR | 50,408 | 50,408 | 1,364,000 | 1,364,000 | $27.06 |
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