microsoft market cap 1999 to 2010

On December 31, 2010, Microsoft (MSFT) had a market capitalization of $183.9B, based on 8.57B shares at a price of $21.45.

DATE CLOSE VOLUME OUTSTANDING MARKET CAP
December 2010
$21.45
1,033,710,000
8,570,000,000
$183,855,638,000.00
November 2010
$19.42
1,361,176,300
8,570,000,000
$166,398,548,000.00
October 2010
$20.38
1,281,432,800
8,570,000,000
$174,613,750,000.00
September 2010
$18.71
1,273,139,500
8,695,000,000
$162,679,972,000.00
August 2010
$17.93
1,279,372,100
8,695,000,000
$155,903,958,500.00
July 2010
$19.61
1,408,590,600
8,695,000,000
$170,538,513,000.00
June 2010
$17.49
1,671,811,600
8,843,000,000
$154,625,160,800.00
May 2010
$19.61
1,720,130,200
8,843,000,000
$173,374,089,400.00
April 2010
$23.10
1,319,029,500
8,843,000,000
$204,304,250,500.00
March 2010
$22.16
1,110,237,200
8,876,000,000
$196,673,520,400.00
February 2010
$21.69
1,074,643,300
8,876,000,000
$192,510,676,400.00
January 2010
$21.22
1,359,650,900
8,876,000,000
$188,339,844,000.00
December 2009
$22.95
920,605,500
8,951,000,000
$205,432,610,800.00
November 2009
$22.15
1,018,256,700
8,951,000,000
$198,220,790,100.00
October 2009
$20.79
1,523,430,100
8,951,000,000
$186,075,178,200.00
September 2009
$19.28
1,038,979,700
8,983,000,000
$173,204,816,200.00
August 2009
$18.48
993,250,400
8,983,000,000
$165,999,551,900.00
July 2009
$17.53
1,517,459,800
8,983,000,000
$157,504,328,800.00
June 2009
$17.72
1,411,144,700
8,960,000,000
$158,770,304,000.00
May 2009
$15.57
1,101,122,400
8,960,000,000
$139,534,080,000.00
April 2009
$15.01
1,562,400,700
8,960,000,000
$134,471,680,000.00
March 2009
$13.61
1,625,752,800
8,904,000,000
$121,164,741,600.00
February 2009
$11.96
1,456,213,400
8,904,000,000
$106,522,113,600.00
January 2009
$12.58
1,564,043,400
8,904,000,000
$112,020,333,600.00
December 2008
$14.30
1,546,943,400
8,914,000,000
$127,492,485,000.00