US stock indices opened lower on Friday as bond yields rose amid roiling energy markets.
At the open, the Dow Jones Industrial Average fell 45.8 points, or 0.10%, to 45,975.65. The S&P 500 fell 11.8 points, or 0.18%, to 6,594.66, while the Nasdaq Composite dropped 101.4 points, or 0.46%, to 21,989.333.
U.S. stocks slipped under the weight of another rise for yields in the bond market. That makes borrowing more expensive for companies and households, slowing the economy.