Sorry, I couldn't find pricing data for that day. The closing price for Apple (AAPL) on May 31, 2013 was $13.84. It was down 0.6% for the day. The latest price is $227.63.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
May 31 2013
$13.93
$14.07
$13.83
$13.84
384,302,800
Daily pricing data for Apple dates back to 12/12/1980, and may be incomplete.