US tech stocks stumbled in after-hours trading after a few industry’s main companies reported unsatisfactory results.

Google parent Alphabet Inc. fell 7.4% after the third-quarter revenue was below expectations, while software colossal Microsoft Corp. lost 8.1%, succeeding in a disappointing revenue prediction. Texas Instruments Inc., a bellwether for the semiconductor industry, tumbled 6.1% after giving a forecast weaker than analyst evaluations. Adding to the gloom, South Korean chipmaker SK Hynix Inc. described a 60% decline in profit, saying to cut capital expenditures by more than half. 

During a regular swap, the drop in US tech stocks came after the Nasdaq 100 Index hopped to its maximum level in a month. The Invesco QQQ exchange-traded fund, tracking the tech-heavy benchmark, fell as much as 2.1% in the after-hours trading, whereas Amazon.com Inc. fell 4.9%.

The sell-off in prolonged trading was broad-based. Those that derive sales from virtual advertising followed Alphabet lower, with Meta Platforms Inc. and Pinterest Inc. dropping more than 4% each. Among software companies touching in the wake of Microsoft, Datadog Inc. tumbled 7%, Snowflake Inc. fell 5%, and Salesforce Inc. dropped 3%. 

Analog Devices Inc., ON Semiconductor Corp., and Marvell Technology Inc. also dished in the chip space. Signs of faintness were extensive in the financial results. Microsoft posted its weakest trimestral sales growth in five years, regulated by the surging US dollar, tumbling PC demand and hesitating advertising revenue. At Alphabet’s most important economic engine, the search and related businesses, sales demolish shy of analyst evaluations as increased inflation crimped progress in digital advertising.