Market Midday: Stocks Mixed, New Tariffs on Canadian Autos, New Iran Threat • 8/24/26

Summary

CNBC's midday update covers mixed equity markets, with the Dow higher on Verizon while the S&P 500 and Nasdaq slip and chipmakers fall. The broadcast covers President Trump's new 50% tariffs on Canadian autos and auto parts, plus expected new U.S. sanctions on Iran as Tehran threatens Hormuz shipping. Guests debate whether Fed Chair Walsh will give specific policy guidance at Jackson Hole; one guest argues Iran sanctions should eventually bring oil down. California's attorney general has canceled the Paramount settlement meeting in the Warner Bros Discovery antitrust fight.

• Dow up 181; S&P 500 and Nasdaq lower
• Verizon up 2.5%; Micron down 4%
• Trump announces 50% tariff increase on Canadian autos and auto parts
• U.S. Treasury to unveil new Iran sanctions; Iran threatens Strait of Hormuz seizures
• Jim Leenthal sees Iran sanctions eventually bringing oil lower
• Richard Harker and Ian Shepardson discuss Fed Chair Walsh's Jackson Hole speech
• California AG cancels Paramount-WBD settlement meeting