Wall Street's three major indexes closed at all-time highs on Thursday.
The Dow Jones Industrial Average gained more than 211 points from Wednesday's close, ending at 31,041.13, setting a record-high for a second straight day.
The tech-heavy Nasdaq ended 2.56 percent higher.
Investors were given a sense of relief after Congress confirmed Joe Biden as the winner of the presidential election, despite the turmoil when Trump supporters occupied the Capitol building.
Democrats also won run-off elections in the state of Georgia this week. Market watchers now expect further measures from a Democrat-controlled Congress to boost the economy.
They also say the new administration will increase public spending immediately after Biden is sworn in.
But some are advising caution, pointing to the coronavirus pandemic and the current jobs situation.