The main US stock indexes closed Friday with decline: Dow Jones lost 0.43%, S&P 500 - 0.93%, NASDAQ - 1.87%. In the U.S. the corporate reporting season continues and, according to CNBC, the main impetus was the negative financial results of Twitter and Snap, reports TASS. An analyst at CFRA warned in an interview with the aforementioned TV channel that one should be prepared for high volatility in the stock market, which will be amplified by the further release of financial indicators.

According to data released Friday, Twitter's second-quarter revenue was $1.18 billion, at least $0.14 billion below forecasts. Revenue from Snap (which owns the social network Snapchat) for the same period was also worse than analysts' expectations -- $1.11 billion versus a projected $1.14 billion. IT companies, including the Big Five industry leaders, are expected to report next week.