The Dow Jones industrial average fell 83 points, or 0.5 per cent, to 17,812 as of 9:33 am. Eastern time Friday.
The Standard & Poor's 500 index fell seven points, or 0.4 per cent, to 2,058. The Nasdaq composite fell 11 points, or 0.2 per cent, to 4,882.
All 10 industry groups in the S&P 500 index fell. Stocks of utility companies declined the most.
Bonds barely moved. The yield on the 10-year Treasury note stood at 2.12 per cent, the same as late Thursday.