04:01 PM EST, 11/18/2025 (MT Newswires) -- US equity indexes fell ahead of Tuesday's close as declines in Microsoft ( MSFT ) and Amazon.com ( AMZN ) exacerbated the sell-off in technology and consumer discretionary sectors.

The Nasdaq Composite fell 0.8% to 22,535.4, with the S&P 500 down 0.5% to 6,642.3 and the Dow Jones Industrial Average 0.8% lower at 46,198.8, ahead of Nvidia's ( NVDA ) quarterly earnings after the close on Wednesday.

Consumer discretionary was down 2.2% and technology was off 1.4% in the final leg of trading.

In company news, shares of Microsoft ( MSFT ) and Amazon.com ( AMZN ) fell more than 2.5% each, among the worst performers on the Dow and the S&P 500. The European Commission launched multiple investigations into the duo's cloud computing services.

As of Monday's close, the Chicago Board of Exchange's put/call ratio rose to 0.76, the highest since July, implying investors have increasingly sought protection from potential market declines. Investors buy put options as a shield against anticipated volatility.

Nvidia ( NVDA ) investors will likely be eyeing macroeconomic issues such as a tougher financing environment and capital expenditure concerns at some hyperscalers when the company releases its Q3 results on Wednesday, BofA Securities said in a note emailed on Monday. Investors will also focus on supply constraints and rising component costs, which may lower Nvidia's ( NVDA ) gross margin.

Most Treasury yields fell, with the two-year down 3.1 basis points to 3.58% and the 10-year lower by one basis point to 4.12%.