Sorry, I couldn't find pricing data for that day. The closing price for the Dow Jones Industrial Average (DJI) on March 12, 1976 was $987.64. It was down 0.9% for the day. The latest price is $45,479.60.
DATE
OPEN
HIGH
LOW
CLOSE
March 12 1976
$996.61
$996.61
$984.49
$987.64
Daily pricing data for the Dow Jones Industrial Average dates back to 1/2/1950, and may be incomplete.