US stock markets were down considerably on Monday, with the S&P slumping to a six-month low and the Nasdaq on a downward path approaching 4% for the day.
In the end, the Dow Index was down 2% on the day, off 890 to 41,911.
The S&P 500 closed down 2.7%, off 156 points to close at about 5,615.
And the Nasdaq fell 4% for its worst day since 2022, down 728 on the day to close at 17,468.
Tesla lost about 15% of its value and Robinhood Markets down about 20%, but residential real estate broker Redfin soared nearly 68%.
Some stock analysts called the Monday drop a selloff, while others emphasized the effects of tariffs slapped onto several countries' economies for bringing increasing pressure to markets, and still others said Monday they're concerned that President Donald Trump refused say over the weekend whether he expects a recession this year.
Retaliatory tariffs are officially being put on US goods bought by China as of Monday, and several experts say uncertainty over the number and timing of some of the tariffs are makng markets volatile.
Investors don't like volatility and uncertainty, according to University of Houston economics Professor Dr. Stephen G. Craig, and there's been plenty of that lately, from OPEC+ to inflation to DOGE.
President Trump last week pledged to impose import tariffs on Canada and Mexico, even as gold bullion worth $64.5 billion was delivered from London to New York and elsewhere in what some call an attempt to beef up the US gold supply.