The closing price for the Dow Jones Industrial Average (DJI) this month is $46,142.42, yesterday. It is up 1.9% for the month. The latest price is $46,199.83.
Sorry, I couldn't find pricing data for that day. The closing price for the S&P 500 (GSPC) on December 31, 2021 was $4,766.20. It was down 0.2% for the day. The latest price is $6,602.99.