April 4 (Reuters) - U.S. stocks opened sharply lower on

Friday, with the Nasdaq Composite heading into a bear market,

after China imposed fresh tariffs on all U.S. goods in response

to the Trump administration's sweeping levies, escalating a

global trade war.

The tech-heavy Nasdaq dropped more than 20% from its

all-time closing high touched in December, putting it on course

to confirm a bear market.

The S&P 500 lost 134.05 points, or 2.48%, to 5,262.47

points, while the Nasdaq Composite lost 473.16 points,

or 2.86%, to 16,077.44. The Dow Jones Industrial Average

fell 994.46 points, or 2.45%, to 39,551.47.