Investors Go Back to Their Early-Covid-19 Playbook: Buy Zoom and Peloton, Dump Travel

It was like early 2020 all over again in the stock market Friday.

Major indexes sold off, with the Dow Jones Industrial Average suffering its worst day in a year, on fears of a fast-spreading new variant of the coronavirus. Investors returned to their early-pandemic playbooks for which companies could be expected to struggle or thrive.