CNBC.com's MacKenzie Sigalos brings you the day's top business news headlines. On today's show, CNBC's Meg Tirrell runs through what we do and don't know about Moderna's 94% effective Covid-19 vaccine, and Pfizer's 90% effective candidate. Plus, CNBC.com markets reporter Pippa Stevens breaks down Tesla's addition to the S&P 500, and explains why the stock rallied today.

00:00 -- CNBC After Hours: November 17, 2020
00:38 -- Stocks fall after yesterday's record rally
1:48 -- What we know and don't know about the highly effective Covid-19 vaccines from Moderna and Pfizer
4:35 -- CNBC Soundcheck
6:35 -- Tesla's big invite
9:48 -- Numbers Round

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