Sorry, available market cap data for WW Grainger (GWW) starts on July 1, 1985. WW Grainger (GWW) has a market capitalization of $60.6B, based on 47.21M shares at a price of $1,283.99 (up 2.1% today).

DATE	OPEN	HIGH	LOW	CLOSE	VOLUME
December 31 1980	$2.27	$2.27	$2.25	$2.25	111,200
December 30 1980	$2.28	$2.29	$2.27	$2.27	7,200
December 29 1980	$2.28	$2.28	$2.28	$2.28	800
December 26 1980	$2.30	$2.30	$2.30	$2.30	800
December 24 1980	$2.31	$2.31	$2.30	$2.30	29,600
December 23 1980	$2.34	$2.34	$2.32	$2.32	419,200
December 22 1980	$2.34	$2.34	$2.34	$2.34	20,800
December 19 1980	$2.31	$2.34	$2.31	$2.33	57,600
December 18 1980	$2.28	$2.30	$2.28	$2.30	31,200
December 17 1980	$2.26	$2.28	$2.26	$2.26	45,600
December 16 1980	$2.21	$2.25	$2.21	$2.25	49,600
December 15 1980	$2.20	$2.24	$2.20	$2.21	204,800
December 12 1980	$2.21	$2.21	$2.20	$2.20	75,200
December 11 1980	$2.26	$2.26	$2.19	$2.21	68,800
December 10 1980	$2.34	$2.34	$2.30	$2.30	264,000
December 09 1980	$2.34	$2.36	$2.34	$2.34	78,400
December 08 1980	$2.35	$2.35	$2.34	$2.34	121,600
December 05 1980	$2.35	$2.35	$2.34	$2.35	11,200
December 04 1980	$2.37	$2.37	$2.34	$2.35	201,600
December 03 1980	$2.35	$2.37	$2.34	$2.37	16,000
December 02 1980	$2.35	$2.37	$2.35	$2.35	19,200
December 01 1980	$2.34	$2.36	$2.34	$2.35	43,200
November 28 1980	$2.35	$2.36	$2.34	$2.34	78,400
November 26 1980	$2.36	$2.38	$2.35	$2.35	108,800
November 25 1980	$2.36	$2.36	$2.34	$2.36	204,000