The Dow made another climb towards 20,000, trading at 19,962 (+0.15%) at 9:38 a.m. ET.
The index could close higher for an eighth straight week, its longest streak since November 2013. Stocks gained after the election as investors cheered the prospects of President-elect Donald Trump's promises to cut taxes and ease regulations.
Also, there was a sense of relief on Wall Street and among consumers that the tense campaign trail ended with a clear winner.
The S&P 500 is up 0.2% to 2,268.65. The Nasdaq rose to a new intraday high of 5,501.70, up 0.74%.
In other markets, crude oil rose following news that the monitoring committee of the Organization of Petroleum Exporting Countries (OPEC) and non-members will meet on January 13. They recently agreed to lower production levels in a bid to raise oil prices.
West Texas Intermediate crude oil, the US benchmark of prices, rose by 1.2% to $53.65 per barrel.
In US economic data, home prices extended to their best levels since the financial crisis, according to the October reading of the S&P/Case-Shiller index.