Therese Poletti’s Tech Tales: After a $2 trillion stock rebound, Big Tech wades into sea of uncertainty

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Big Tech didn’t offer strong holiday returns, but Wall Street still responded to fourth-quarter results by throwing $2 trillion in valuation at the biggest tech companies.

That stock bounce appears to be predicated on a widespread belief that there will be a rebound in the second half of this year, when companies lap the results that disappointed Wall Street in the back end of 2022. While executives have provided color about expecting such a rebound, most have not offered any concrete evidence — such as annual forecasts —…