The Dow Jones Industrial Average jumped 150 points, or 2.2%, to end at 6,875.84. Earlier in the session, the Dow had been up more than 250 points. The broader S&P 500 index rose 16.5 points, or 2.4%, to close at 712.87. The tech-heavy Nasdaq Composite index surged 33 points, or 2.5%, to finish at 1,353.74.
