Sorry, available market cap data for Microsoft (MSFT) starts on January 2, 2009. Microsoft (MSFT) has a market capitalization of $2.9T, based on 7.43B shares at a price of $393.31 (up 0.3% on Friday).

DATE	OPEN	HIGH	LOW	CLOSE	VOLUME
February 28 2003	$14.63	$14.83	$14.51	$14.60	56,585,400
February 27 2003	$14.73	$14.92	$14.36	$14.53	75,434,300
February 26 2003	$14.83	$15.08	$14.53	$14.55	57,096,000
February 25 2003	$14.51	$14.96	$14.41	$14.91	68,113,000
February 24 2003	$15.06	$15.10	$14.69	$14.83	62,403,700
February 21 2003	$14.97	$15.28	$14.60	$15.18	56,853,200
February 20 2003	$15.26	$15.33	$14.85	$14.88	50,897,200
February 19 2003	$15.29	$15.33	$14.89	$15.12	46,902,700
February 18 2003	$15.12	$15.35	$14.99	$15.33	57,415,500
February 14 2003	$14.51	$14.90	$14.36	$14.83	90,446,400
February 13 2003	$14.25	$14.47	$14.17	$14.43	73,558,200
February 12 2003	$14.30	$14.47	$14.21	$14.26	71,315,200
February 11 2003	$14.53	$14.64	$14.13	$14.26	84,292,000
February 10 2003	$14.37	$14.59	$14.29	$14.55	74,081,400
February 07 2003	$14.71	$14.73	$14.25	$14.31	75,208,000
February 06 2003	$14.39	$14.63	$14.30	$14.56	83,312,000
February 05 2003	$14.69	$14.91	$14.35	$14.42	101,072,000
February 04 2003	$14.68	$14.72	$14.40	$14.53	81,854,800
February 03 2003	$14.72	$15.08	$14.58	$14.91	80,129,800