The iShares Core U.S. Aggregate Bond ETF, which tracks the U.S. investment-grade bond market, was down 0.3%, according to FactSet data, at last check. Among Treasury bond funds, the Vanguard Long-Term Treasury ETF was falling 0.5%, while the iShares 3-7 Year Treasury bond, which targets intermediate-term U.S. Treasury bonds, was down 0.2%.

The S&P 500 ended at a record high on Friday, representing the index's 45th record closing high this year and its first close above 5,800.

U.S. stocks are rising toward records as JPMorgan Chase, Wells Fargo and other big financial companies rally following better-than-expected profit reports.

U.S. stocks were pulling back from record territory in the final hour of trade Thursday as investors looked forward to big banks kicking off earnings season in earnest. "Inflation is ebbing lower, but it's going to take some time," said Anthony Saglimbene, chief market strategist at Ameriprise Financial, in a phone interview.