Sorry, I couldn't find pricing data for that day. The closing price for Berkshire Hathaway (BRK.A) on December 29, 2023 was $542,625. It was down 0.2% for the day. The latest price is $735,288.69.
The closing price for JPMorgan Chase (JPM) in September 2012 was $28.28, on September 28, 2012. It was up 9.5% for the month. The latest price is $317.47.