Despite Posting Monster Q4 And 2020 Results, Facebook’s Stock Tumbles On IDFA Fears | AdExchanger
Although Facebook had a great Q4, the stock fell nearly 4% in after-hours trading due to concerns related to the impace of Apple's coming IDFA changes.
27 Jan 2021 ... Apparently IDFA can move stock prices. Although Facebook had a damned good
Q4, with ad revenue up more than 30% year-over-year to $28.1 ...