Stock futures were little changed early Friday after the major averages closed at new all-time highs.
Futures for the Dow Jones Industrials retreated 17 points, or 0.1%, at 30,185.
Futures for the S&P 500 eked ahead 1.25 points at 3,714.
Futures for the NASDAQ Composite registered higher by three points to 12,754.
The major averages were coming off a record-setting session, which saw all three indexes close at new highs. During regular trading hours, the Dow advanced 148 points for a gain of 0.49%. The S&P 500 gained 0.6%, and NASDAQ added 0.8%, both hitting intraday and record closing highs.
The major averages are on track to post modest gains for the week. The S&P 500 is up 1.6% this week through Thursday's close, heading for its fourth positive week in five. The Dow has gained 0.9% in this period, while the tech-heavy NASDAQ outperformed with a 3.1% rally for the week so far.
The leg higher came amid optimism around COVID vaccines, as well as the hope that Washington will soon come to a consensus on additional stimulus measures.
Leaders on Capitol Hill said they are close to an agreement that would provide $900 billion in additional aid. The talks, which have stretched on for months, are up against the wire, with federal funding lapsing at 12:01 a.m. ET on Saturday.
The stock market is expected to experience massive volume on Friday as Tesla's historic entry into the S&P 500 is poised to occur at the close. With a market capitalization of more than $600 billion after a nearly 700% rally this year, the electric carmaker will be joining as the seventh-largest company in the index.
Tesla will be added to the benchmark in one fell swoop, marking the largest rebalancing of the S&P 500 in history. It's estimated that passive funds tracking the S&P 500 will need to buy more than $85 billion of Tesla, while selling $85 billion of the rest of the index to make room for it.
Meanwhile, the Tesla inclusion coincides with a quarterly event known as quadruple witching, when options and futures on indexes and equities expire. Many expect Friday to be one of the busiest trading days of the year.
On Thursday evening Food and Drug Administration advisors overwhelmingly backed Moderna's COVID vaccine, a key step towards public distribution approval by the FDA.
Overseas, in Japan, the Nikkei 225 fell 0.2% Friday, while in Hong Kong, the Hang Seng index skidded 0.7%.
Oil prices settled 0.05 cents to $48.31 U.S. a barrel.
Gold prices jumped $1.80 at $1,892.20 U.S.