Sorry, I couldn't find pricing data for that day. The closing price for Nike (NKE) on September 23, 1988 was $0.21. It was up 1.3% for the day. The latest price is $68.61.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
September 23 1988
$0.21
$0.21
$0.21
$0.21
39,756,800
Daily pricing data for Nike dates back to 12/2/1980, and may be incomplete.