The Nasdaq closed above 6,000 for the first time Tuesday following a round of mostly strong corporate earnings and ahead of the White House's long-awaited tax cut announcement Wednesday.
At the closing bell, the tech-rich Nasdaq Composite Index stood at 6,025.68, up 0.7 percent.
The Dow Jones Industrial Average jumped 1.1 percent to end the day at 20,996.43, while the S&P 500 rose 0.6 percent to 2,388.58.