Check back for updates throughout the trading dayU.S. equity futures extended declines in early Tuesday trading, matching downside moves for oil prices and the dollar, as markets reacted to the fast-changing dynamic on tariffs and the potential for a protracted trade war between the world's two biggest economies.

Asian shares were mostly lower Wednesday as markets mulled the impact of tariffs being imposed by the United States and China. The Hang Seng dropped 0.6% to 20,659.41, while the Shanghai Composite lost 0.