The Dow Jones Industrial Average soared nearly 1,300 points, or 5%, Monday as stocks roared back from a seven-day rout on hopes that central banks will take action to shield the global economy from the effects of the coronavirus outbreak.

The huge gains clawed back some of the ground lost last week in a massive sell-off that gave stocks their worst stretch since the financial crisis of 2008.

Technology companies led the broad gains, which gave the Dow its biggest-ever point gain and biggest percentage increase since March 2009. The S&P 500 index jumped 4.6%, its best day since December 2018.

E...