Volatility returned to U.S. stocks again Monday afternoon. This is still, I think, largely about forced sellers as speculators such as hedge funds get used to the reality of having to operate with less leverage. But it would be wise to note that there is obviously a Chinese component to this. Since 2016, the more a company was exposed to China, the better it had done. But that has all changed in recent weeks, and those companies are doing worse.