On December 31, 2008, Interactive Brokers (IBKR) had a market capitalization of $812.8M, based on 193.27M shares at a price of $4.21.
| DATE | CLOSE | VOLUME | OUTSTANDING | MARKET CAP |
|---|---|---|---|---|
December 31 2008 | $4.21 | 2,072,516 | 193,268,000 | $812,769,247.20 |
December 30 2008 | $4.02 | 1,312,864 | 193,268,000 | $776,415,536.40 |
December 29 2008 | $3.78 | 1,022,904 | 193,268,000 | $729,625,353.60 |
December 26 2008 | $3.72 | 558,212 | 193,268,000 | $719,633,398.00 |
December 24 2008 | $3.67 | 958,836 | 193,268,000 | $708,733,082.80 |
December 23 2008 | $3.73 | 1,876,436 | 193,268,000 | $720,541,757.60 |
December 22 2008 | $3.95 | 1,957,784 | 193,268,000 | $764,162,345.20 |
December 19 2008 | $4.07 | 3,000,684 | 193,268,000 | $785,962,975.60 |
December 18 2008 | $4.17 | 1,400,568 | 193,268,000 | $806,855,246.40 |
December 17 2008 | $4.26 | 1,363,224 | 193,268,000 | $823,205,719.20 |
December 16 2008 | $4.29 | 1,897,232 | 193,268,000 | $829,119,720.00 |
December 15 2008 | $4.04 | 1,742,940 | 193,268,000 | $780,957,334.40 |
December 12 2008 | $4.28 | 1,982,980 | 193,268,000 | $826,839,157.60 |
December 11 2008 | $4.25 | 1,454,916 | 193,268,000 | $821,852,843.20 |
December 10 2008 | $4.35 | 959,584 | 193,268,000 | $840,020,035.20 |
December 09 2008 | $4.26 | 1,903,244 | 193,268,000 | $824,114,078.80 |
December 08 2008 | $4.33 | 2,611,868 | 193,268,000 | $835,942,080.40 |
December 05 2008 | $4.04 | 2,258,180 | 193,268,000 | $780,957,334.40 |
December 04 2008 | $3.82 | 2,374,512 | 193,268,000 | $737,800,590.00 |
December 03 2008 | $3.90 | 3,294,348 | 193,268,000 | $754,151,062.80 |
December 02 2008 | $3.95 | 2,715,656 | 193,268,000 | $763,253,985.60 |
December 01 2008 | $4.04 | 2,288,540 | 193,268,000 | $780,512,818.00 |
November 28 2008 | $4.29 | 884,024 | 193,268,000 | $828,655,876.80 |
November 26 2008 | $4.21 | 1,739,852 | 193,268,000 | $813,213,763.60 |
November 25 2008 | $3.93 | 2,244,328 | 193,268,000 | $759,601,220.40 |
