Sorry, I couldn't find pricing data for that day. The closing price for Tesla (TSLA) on October 12, 2018 was $17.25. It was down 0.9% for the day. The latest price is $461.87.
DATE
OPEN
HIGH
LOW
CLOSE
VOLUME
October 12 2018
$17.40
$17.47
$16.80
$17.25
108,021,171
Daily pricing data for Tesla dates back to 6/29/2010, and may be incomplete.