CNBC's MacKenzie Sigalos brings you the day's top business news headlines. On today's show, CNBC's Frank Holland hits the massive plunge in cannabis stocks after Reddit traders piled into the space. Plus, CNBC's Josh Lipton breaks down the ongoing global semiconductor shortage that is snarling production schedules of everything from pickup trucks to gaming consoles.

00:00 -- Intro
0:40 -- Stocks close mixed
1:37 -- Weed stocks tank as Reddit trade loses momentum
2:57 -- CNBC Soundcheck
4:32 -- The global semiconductor chip shortage
6:44 -- Numbers Round

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