Sorry, I couldn't find pricing data for that day. The closing price for Microsoft (MSFT) on May 31, 2019 was $116.65. It was down 0.4% for the day. The latest price is $485.92.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
May 31 2019
$117.16
$117.53
$116.31
$116.65
26,646,770
Daily pricing data for Microsoft dates back to 3/13/1986, and may be incomplete.