The Dow Jones Industrial Average, S&P 500, and Nasdaq Composite all reached new record highs on December 22. The Dow closed up 227.79 points, or 0.47%, at 48,362.68. The S&P 500 increased by 43.99 points, or 0.64%, to 6,878.49, while the Nasdaq Composite rose 121.21 points, or 0.52%, to 23,428.83. On-chain data highlights strong market momentum driving these gains across major indices.