Stocks that traded heavily or had substantial price changes Friday:
Stocks in companies that make vaccines against COVID-19 soared as a new variant emerged.
Energy stocks plunged on fears a resurgence of the pandemic will again pummel the overall economy.
Travel companies were among the worst hit by renewed fears of possible lockdowns in response to the continuing pandemic.
The concert and event promoter had its worst day since early in the pandemic amid fresh fears of pandemic-related cancellations and capacity limits.
Airline shares sank after a slew of nations moved to stop air travel from southern
Investors poured money into the cleaning supplies maker, similar to what happened early in the pandemic.
Grocery chains benefited from investors' bet that a new coronavirus strain would drive more shoppers to stock up and eat more at home.
The video meeting company had its best day since March as investors anticipated more remote working.
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