NEW YORK: Wall Street stocks rocketed higher on Wednesday (Mar 4), boosted by a strong performance by US presidential candidate Joe Biden in the Super Tuesday primaries and extending a run of volatility amid coronavirus worries.
US indices last week suffered their biggest weekly losses since 2008. The roller-coaster continued this week, with stocks surging on Monday and plunging on Tuesday before Wednesday's rally recovered some of the ground.
The Dow Jones Industrial Average finished the session up 4.53 per cent at 27,090.86, a gain of almost 1,173.45 points, recovering the 800 points lost on Tuesday.
The broad-based S&P 500 jumped 126.75 points (4.22 per cent) to end the day at 3,130.12, while the tech-rich Nasdaq Composite Index surged 334.00 points (3.85 per cent) to close at 9,018.09.
As the new coronavirus continued to spread, Italy on Wednesday announced it was closing all schools and Israel moved to tighten travel restrictions on five more European nations.
The death-toll currently stands at more than 3,200 and a growing list of trade shows and public events have been postponed or cancelled as economists slash their outlook for 2020.
But markets on Wednesday focused on election results from Tuesday in which former vice president Biden re-established himself as a frontrunner, winning at least nine and possibly 10 of the nomination contests held across 14 states.
Investors have been unnerved by the rise of leftist Bernie Sanders, who has emerged as Biden's top rival in the shrinking field of Democratic contenders. Sanders favours hefty taxes on wealth and a radical remake of the US healthcare system.
While stock gains were broad-based, health insurers were especially buoyant on expectations that Biden would seek more modest changes to the healthcare market in comparison with Sanders, who has sharply criticised insurers.
UnitedHealth Group surged 10.7 per cent, Anthem won 15.6 per cent and Humana jumped 14.4 per cent.
Campbell Soup soared 10.1 per cent after lifting its 2020 profit forecast, due in part to lower interest payments following moves to cut debt.