Carl Quintanilla, Jim Cramer and David Faber drilled down on catalysts for Wednesday's tech pullback: Alphabet posts a Q4 revenue miss and announces 

a $75 billion capex plan, AMD misses on AI data center revenue and China reportedly weighs a probe into Apple's App Store. In a CNBC exclusive, 

Uber CEO Dara Khosrowshahi joined the anchors at Post 9  to discuss his company's Q4 results, autonomous driving and the guidance that weighed on the stock. 

Also in focus: Disney's Q1 beat and streaming subscriber losses, earnings winners and losers -- including one stock that plummeted 35%.

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