Sorry, available market cap data for Western Digital (WDC) starts on January 2, 2009. Western Digital (WDC) has a market capitalization of $25.5B, based on 326.52M shares at a price of $78.12.

DATE	OPEN	HIGH	LOW	CLOSE	VOLUME
December 2002	$7.14	$7.16	$4.85	$5.11	63,511,300
November 2002	$4.93	$7.11	$4.93	$6.76	69,485,000
October 2002	$3.69	$5.22	$3.52	$4.95	39,954,600
September 2002	$3.24	$3.80	$3.04	$3.76	18,727,900
August 2002	$3.58	$4.39	$3.12	$3.24	29,559,800
July 2002	$2.62	$3.76	$2.38	$3.55	40,034,900
June 2002	$3.72	$3.72	$2.45	$2.60	30,779,300
May 2002	$4.92	$4.95	$3.29	$3.68	46,064,700
April 2002	$5.00	$6.04	$4.72	$4.95	48,017,400
March 2002	$4.73	$5.68	$4.65	$4.98	31,699,400
February 2002	$4.96	$5.18	$4.16	$4.65	39,557,000
January 2002	$5.09	$6.20	$4.84	$5.00	59,238,800
December 2001	$3.60	$5.43	$3.60	$5.01	49,212,000
November 2001	$2.76	$3.96	$2.69	$3.77	29,787,400
October 2001	$1.73	$2.87	$1.72	$2.68	25,254,500
September 2001	$2.53	$2.85	$1.56	$1.74	13,595,900
August 2001	$2.87	$3.25	$2.52	$2.54	17,086,200
July 2001	$3.16	$3.16	$2.36	$2.81	16,167,000
June 2001	$3.49	$3.68	$2.38	$3.16	27,684,400
May 2001	$4.22	$4.40	$3.34	$3.45	13,870,000
April 2001	$3.76	$4.46	$3.00	$4.25	29,927,600
March 2001	$3.25	$3.81	$2.60	$3.81	24,280,000
February 2001	$4.14	$4.75	$3.20	$3.29	22,408,900
January 2001	$2.05	$4.35	$1.85	$4.22	44,972,600
December 2000	$2.65	$3.05	$1.75	$1.95	49,789,000