In this Feb. 14, 2018, file photo the logo for Alphabet appears on a screen at the Nasdaq MarketSite in New York. Alphabet Inc. reports financial earnings on Thursday, Feb. 2, 2023. Credit: AP Photo/Richard Drew, File

Wall Street had its eyes Friday on big tech after some of the biggest companies in the world posted lackluster quarterly financial performances.

That included Apple Inc. The company posted its first quarterly revenue drop in nearly four years after pandemic-driven restrictions on its China factories curtailed sales of the latest iPhone during the holiday season.

Amazon reported worse-than-expected fourth-quarter profits, but its revenue beat expectations boosted by sales in its cloud-computing unit AWS, which is also seeing a slow-down in growth.

Google's parent company Alphabet posted a lower profit and a small revenue increase for last year's fourth quarter, as a decline in online ad spending and competition from rivals weigh on the search giant. While overall revenue grew, advertising revenue fell by nearly 4% and revenue at YouTube declined 8% year-over-year.

Amazon ended Friday down 8.4% and Alphabet lost 2.8%. Apple bounced back, finishing the day up 2.4%.

  • The Amazon DTW1 fulfillment center is shown in Romulus, Mich., April 1, 2020. Amazon reports financial earnings on Thursday, Feb. 2, 2023. Credit: AP Photo/Paul Sancya

  • This Wednesday, July 24, 2019 photo shows an Apple Store in Chicago is seen. Apple reports financial earnings on Thursday, Feb. 2, 2023. Credit: AP Photo/Amr Alfiky, File