Sorry, I couldn't find pricing data for that day. The closing price for the Dow Jones Industrial Average (DJI) on December 31, 1986 was $1,895.95. It was down 0.7% for the day. The latest price is $44,419.41.
DATE
OPEN
HIGH
LOW
CLOSE
December 31 1986
$1,908.46
$1,915.21
$1,889.34
$1,895.95
Daily pricing data for the Dow Jones Industrial Average dates back to 1/2/1950, and may be incomplete.