Came on a day of relatively light trading
Wall Street's "Santa Claus" rally kept delivering gifts a day after Christmas.
The Dow Jones industrial average, Standard & Poor's 500 index and the Russell 2000 index of small-company stocks closed at all-time highs on Friday.
The modest pickup in stocks, which gave the Dow its seventh consecutive gain, came on a day of relatively light trading following the holiday break for U.S. markets.
Utilities stocks were among the biggest gainers.
Oil prices continued to decline. That made traders hopeful for stronger consumer spending heading into next year, since drivers won't need to pay as much to fill up their cars.
"Holiday sales look good. The consumer is in good shape," said David Chalupnik, head of equities at Nuveen Asset Management. "We're ending the year strong and my guess is the market continues to trend higher through year-end and January is probably going to be a good month as well."
The Dow gained 23.50 points to close at 18,053.71. That's up 0.1 per cent from its previous record high on Wednesday.
The Standard & Poor's 500 index added 6.89 points, or 0.3 per cent, to 2,088.77. That's up 0.3 per cent from the S&P 500's most-recent all-time high recorded on Tuesday.
The Nasdaq composite rose 33.39 points, or 0.7 per cent, to 4,806.86. The last time the index was higher was March 28, 2000, during the heady days of the dot-com bubble.