The Dow Jones industrial average plunged 2.5 percent Friday — closing down 666 points — and suffered its worst week in two years as concerns over rising interest rates and inflation from an overheated economy triggered a long-feared sell-off. It was the worst day for stocks since President Trump took office — and a stark reversal from the optimism that has propelled the markets higher for most of the

past year. The market has been on a historic nine-year bull run. The U.S. and world economies are so strong that people think the situation cannot last. Concerns were fueled by a Labor Department report that wages in January were 2.9 percent higher than a year ago and unemployment held at 4.1 percent. A tightening labor market sparked fears that interest rates will rise. READ MORE