The closing price for Bitcoin (BTC) in September 2014 was $386.94, on September 30, 2014. It was down 19% for the month. The latest price is $60,782.07.
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 $5,708.47.