The new tariff rates came before an Aug. 1 deadline Trump gave about 180 countries to either reach trade deals or face higher import duties.

Bank of America’s Michael Hartnett sees renewed dollar selling and thinks bond traders would be confounded by 10-year yields at 4%.

Stocks plunged early Friday on a flurry of negative headlines, including more Trump tariffs and a weak jobs report.

President Donald Trump’s new wave of tariffs on many countries, including Canada, was weighing on the U.S. stock market Friday morning. “Although the 1 August deadline was well telegraphed, the ...