Stock market live Monday: Dow slides 180 on shutdown fears, S&P 500's 4-day losing streak, stay-at-home tech outperforms

Wall Street struggled to rebound from a losing week even as the U.S. approves the rollout of a coronavirus vaccine designed by Pfizer and BioNTech. Sentiment got hurt after New York City Mayor Bill de Blasio said residents should be prepared for the possibility of a full shutdown.

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