Sorry, I couldn't find pricing data for that day. The closing price for Costco Wholesale (COST) on June 28, 1996 was $7.26. It was up 2.4% for the day. The latest price is $999.21.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
June 28 1996
$7.09
$7.35
$7.05
$7.26
4,156,800
Daily pricing data for Costco Wholesale dates back to 11/27/1985, and may be incomplete.