The trading volume of the US stock market reaches the third highest record.

On September 19, as the approaching expiration date of $5 trillion worth of options known as the triple witching hour, trading volume soared near the close. Stock trading volume at various stock exchanges in the United States reached approximately 27.7 billion shares, making it the third busiest trading day since Bloomberg began compiling data in 2008. As the US stock market hits record highs, with the earnings season approaching, the improved expectations for profit growth of US companies indicate that this rally is likely to continue. Data compiled by Bloomberg industry research shows that among the companies in the S&P 500 index that have released third-quarter earnings guidance, over 22% are expected to exceed analysts' expectations, reaching the highest level in a year.