US stock indices opened the first session of the week sharply lower, with Apple dragging the tech sector down while banks shut down in observance of Veterans' Day.
Apple tumbled nearly 4% after two of its suppliers cut their forecasts, with laser sensor manufacturer Lumentum losing a third of its value after reporting a large client has considerably cut orders, while screen maker Japan Display trimmed forecasts as well for the year due to weak demand from smartphone makers.
As of 03:50 GMT, Standard and Poor's 500 fell 1.08%, or 30.17 points to 2,750.84, while Dow Jones slumped 1.14%, or 296.93 points to 25,692.37.
Tech-heavy NASDAQ sank 2.02%, or 149.38 points to 7,256.53.