Pointing to data showing run-ups in foreign purchases of U.S. stocks before the 1987 crash, the dot-com bubble in 2000, and the 2008 financial crisis, Ed Yardeni wrote in his eponymous research newsletter, "Their buying has a record of being a contrary indicator. They tend to be big buyers right before bear markets."

The stock market showed little signs of recovery from the Trump administration’s chaotic tariff rollout after the Federal Reserve issued a bleak outlook on Wednesday. A CNN expert warned Wednesday night that “bad news is coming” as the markets took another beating.