Sorry, I couldn't find pricing data for that day. The closing price for the Nasdaq Composite (IXIC) on December 28, 2018 was $6,584.52. It was down 0.5% for the day. The latest price is $23,543.86.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
December 28 2018
$6,616.79
$6,684.18
$6,529.22
$6,584.52
2,216,250,000
Daily pricing data for the Nasdaq Composite dates back to 2/5/1971, and may be incomplete.