Ten of Eleven Sectors Fall in S&P 500 as Meta Drops 3.5%

Ten out of eleven sectors in the S&P 500 index declined, led by Meta down 3.54% and Microsoft down 3.04%, while the semiconductor sector finished in green territory, bucking the general downward trend.

August 18, 2026
Ten of Eleven Sectors Fall in S&P 500 as Meta Drops 3.5%

Ten out of eleven sectors within the S&P 500 index declined in a single session, amid a broad sell-off that affected major tech stocks, as shares of Meta fell by 3.54% and shares of Microsoft dropped by 3.04%.

The semiconductor sector was the sole exception to this broad decline, finishing trading with gains driven by positive expectations surrounding rising demand for chips dedicated to artificial intelligence applications.

This mixed performance reflects market uncertainty, as investors pivot toward sectors with sustainable growth such as microchips, while mega-cap tech stocks face accelerated profit-taking.

This session casts a shadow over the risk profile in US markets; for while semiconductor stocks rally, major tech companies face mounting corrective pressure, in a scenario that re-raises the question of who will lead the market in the upcoming quarter.

What do these terms mean?

S&P 500: An index tracking the performance of the 500 largest companies listed on US stock exchanges, considered the primary benchmark for measuring the health of the US market and investment portfolio performance.

Profit Taking: Selling stocks after price increases to realize accumulated gains, which creates temporary downward pressure on strong-performing stocks.

Semiconductors: Microscopic electronic chips that form the backbone of modern technology devices, experiencing surging demand due to the spread of artificial intelligence applications.

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