Worries about President Trump’s tariffs are hurting U.S. stocks as financial markets worldwide drop on concerns about a potential trade war.

Wall Street's main indexes were muted on Friday, though set for firm weekly advances as Treasury yields continued to decline a day after U.S. President Donald Trump unveiled his reciprocal tariff plans but stopped short of imposing new ones.

U.S. stocks rallied to the brink of a record Thursday after more companies reported fatter profits than expected. Wall Street mostly yawned, again, at the latest announcement on tariffs by President Trump,