The closing price for Microsoft (MSFT) in May 2018 was $91.15, on May 31, 2018. It was up 6.5% for the month. The latest price is $534.18.

DATE	OPEN	HIGH	LOW	CLOSE	VOLUME
May 31 2018	$91.57	$92.21	$90.94	$91.15	34,140,900
May 30 2018	$90.66	$91.53	$90.29	$91.25	22,158,500
May 29 2018	$90.23	$91.19	$89.67	$90.38	28,671,000
May 25 2018	$90.65	$91.28	$90.25	$90.71	18,363,900
May 24 2018	$91.05	$91.24	$89.28	$90.66	26,649,300
May 23 2018	$89.19	$91.05	$88.83	$90.98	21,251,200
May 22 2018	$90.08	$90.53	$89.64	$89.91	15,441,200
May 21 2018	$89.45	$90.38	$89.27	$90.01	19,422,500
May 18 2018	$88.54	$89.39	$88.54	$88.86	17,865,800
May 17 2018	$89.23	$89.95	$88.37	$88.70	17,246,700
May 16 2018	$89.79	$89.82	$89.10	$89.59	17,384,700
May 15 2018	$89.29	$89.85	$88.46	$89.36	24,594,000
May 14 2018	$89.91	$90.62	$89.35	$90.01	19,454,100
May 11 2018	$89.80	$89.87	$89.10	$89.71	16,778,300
May 10 2018	$89.49	$89.94	$89.11	$89.90	22,388,100
May 09 2018	$88.16	$89.04	$87.28	$89.01	27,327,400
May 08 2018	$88.01	$88.30	$87.29	$87.97	23,484,600
May 07 2018	$87.39	$88.80	$87.32	$88.35	24,242,000
May 04 2018	$85.69	$87.57	$85.32	$87.38	22,531,300
May 03 2018	$85.36	$87.17	$84.89	$86.38	31,142,500
May 02 2018	$87.22	$87.39	$85.57	$85.86	27,471,000
May 01 2018	$85.59	$87.50	$85.20	$87.23	31,408,900

Daily pricing data for Microsoft dates back to 3/13/1986, and may be incomplete.