Apple Inc. is finding itself squarely in the crosshairs of President Donald Trump’s new tariffs, even after a yearslong effort to insulate the iPhone maker from trade wars and supply chain disruptions.

U.S. tech stocks tumbled in early Friday trading, extending one of the worst days for the Nasdaq in five years, as China hit back at President Donald Trump's sweeping global tariffs with new levies that look set to trigger a damaging trade war between the world's two biggest economies.

Yahoo Finance will chronicle the latest news and updates on Trump's tariffs — from the threats to the eventual policy.

Shares of Dell Technologies Inc., Apple Inc., Sonos Inc. and HP Inc. plunged Thursday after President Donald Trump announced sweeping tariffs on imports from virtually every US trading partner, a move that threatens to increase costs,