amazon market cap in 2015

On December 31, 2015, Amazon (AMZN) had a market capitalization of $325.1B, based on 9.62B shares at a price of $33.79.

DATE CLOSE VOLUME OUTSTANDING MARKET CAP
December 31 2015
$33.79
74,991,199
9,620,000,000
$325,103,090,000.00
December 30 2015
$34.45
70,380,059
9,620,000,000
$331,442,670,000.00
December 29 2015
$34.70
114,699,918
9,620,000,000
$333,799,570,000.00
December 28 2015
$33.76
75,671,099
9,620,000,000
$324,771,200,000.00
December 24 2015
$33.14
21,859,400
9,620,000,000
$318,801,990,000.00
December 23 2015
$33.19
54,458,439
9,620,000,000
$319,239,700,000.00
December 22 2015
$33.16
53,355,899
9,620,000,000
$318,975,150,000.00
December 21 2015
$33.23
65,017,999
9,620,000,000
$319,629,310,000.00
December 18 2015
$33.21
136,826,078
9,620,000,000
$319,451,340,000.00
December 17 2015
$33.53
73,632,899
9,620,000,000
$322,582,650,000.00
December 16 2015
$33.79
79,289,399
9,620,000,000
$325,045,370,000.00
December 15 2015
$32.93
95,068,299
9,620,000,000
$316,805,840,000.00
December 14 2015
$32.90
87,225,459
9,620,000,000
$316,454,710,000.00
December 11 2015
$32.01
109,488,398
9,620,000,000
$307,912,150,000.00
December 10 2015
$33.12
69,109,439
9,620,000,000
$318,575,920,000.00
December 09 2015
$33.24
103,163,439
9,620,000,000
$319,763,990,000.00
December 08 2015
$33.87
73,038,159
9,620,000,000
$325,795,730,000.00
December 07 2015
$33.49
74,656,279
9,620,000,000
$322,188,230,000.00
December 04 2015
$33.63
90,695,919
9,620,000,000
$323,539,840,000.00
December 03 2015
$33.31
101,294,719
9,620,000,000
$320,466,250,000.00
December 02 2015
$33.80
85,470,519
9,620,000,000
$325,160,810,000.00
December 01 2015
$33.95
95,023,039
9,620,000,000
$326,627,860,000.00
November 30 2015
$33.24
113,863,438
9,620,000,000
$319,768,800,000.00
November 27 2015
$33.66
39,336,019
9,620,000,000
$323,838,060,000.00
November 25 2015
$33.77
53,957,779
9,620,000,000
$324,838,540,000.00