On December 31, 2015, Bitcoin (BTC) had a market capitalization of $6.5B, based on 15.03M coins issued at a price of $430.57.

bitcoin market cap 2015
DATE CLOSE VOLUME BTC MINED MARKET CAP
December 31 2015 $430.57 45,996,600 15,029,525 $6,471,217,490.68
December 30 2015 $426.62 46,889,400 15,025,975 $6,410,381,454.50
December 29 2015 $432.98 51,596,500 15,021,850 $6,504,205,678.55
December 28 2015 $422.28 49,638,600 15,017,875 $6,341,733,237.13
December 27 2015 $422.82 53,591,200 15,014,100 $6,348,306,804.30
December 26 2015 $417.27 116,166,000 15,008,975 $6,262,855,034.15
December 25 2015 $455.65 39,078,500 15,004,700 $6,836,936,569.10
December 24 2015 $454.99 57,157,200 15,000,650 $6,825,070,740.25
December 23 2015 $442.40 47,161,400 14,997,200 $6,634,776,277.20
December 22 2015 $436.57 50,840,400 14,993,275 $6,545,644,053.30
December 21 2015 $438.64 77,639,700 14,989,525 $6,574,990,256.48
December 20 2015 $442.69 75,409,400 14,985,800 $6,633,988,873.00
December 19 2015 $462.32 47,892,700 14,981,675 $6,926,357,949.35
December 18 2015 $463.62 60,220,100 14,977,750 $6,943,924,544.00
December 17 2015 $456.08 47,978,400 14,973,525 $6,829,095,334.95
December 16 2015 $454.93 107,944,000 14,969,650 $6,810,202,753.10
December 15 2015 $465.32 83,121,100 14,965,575 $6,963,796,324.58
December 14 2015 $444.18 130,496,000 14,961,000 $6,645,406,902.00
December 13 2015 $433.76 55,050,600 14,956,125 $6,487,293,999.38
December 12 2015 $435.00 131,969,000 14,952,575 $6,504,325,267.28
December 11 2015 $451.94 110,944,000 14,948,525 $6,755,806,491.45
December 10 2015 $415.48 52,138,900 14,944,525 $6,209,136,302.47
December 09 2015 $417.56 90,917,200 14,939,125 $6,238,025,852.38
December 08 2015 $415.56 57,801,400 14,934,925 $6,206,402,237.78
December 07 2015 $395.54 63,455,800 14,930,550 $5,905,570,024.80

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