CNBC's MacKenzie Sigalos brings you the day's top business news headlines. On today's show, CNBC's Kate Rooney breaks down what to expect from the Biden administration in terms of cryptocurrency regulation. Plus, CNBC's Deirdre Bosa explains why Chinese billionaire Jack Ma's reappearance this week captured the attention of the global business community.

00:00 -- CNBC After Hours: Jan. 21, 2021
0:45 -- Nasdaq, S&P 500 close at record highs
1:43 -- What is the Biden bitcoin doctrine?
3:36 -- CNBC Soundcheck
5:27 -- The return of Jack Ma
9:13 - -Numbers Round

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