By Ben St. Clair and Danielle Chemtob
-- U.S. proposes new tariffs on $200 billion of Chinese goods
-- Treasury yields decline, dollar edges up
-- Crude futures, copper fall
U.S. stocks slumped Wednesday as concerns over escalating trade tensions cut into the week's gains.
The Dow Jones Industrial Average lost 158 points, or 0.6%, to 24762, while the S&P 500 declined 0.6% and the technology-heavy Nasdaq Composite dropped 0.5%. The indexes are on track to break a four-session winning streak and remain modestly higher for the week.
The Trump administration said late Tuesday it would assess 10% tariffs on an additional $200 billion in Chinese goods. The tariffs, which wouldn't come into effect for at least two months, cover a variety of Chinese goods, including some fish, luggage, tires, dog leashes, handbags, baseball gloves, furniture, apparel and mattresses.
China called the move "totally unacceptable" in a statement attributed to an unnamed ministry spokesman and vowed to roll out unspecified countermeasures.
"Every time a trade headline comes out, it seems to suck the oxygen away from everything else the market is paying attention to," said Jeff Mills, co-chief investment strategist for PNC Financial Services Group.
Ten of the 11 sectors in the S&P 500 traded lower, with the materials and industrials segments posting the biggest losses, both off more than 1%. The utilities sector, which is considered a defensive play because of its hefty dividend payments, was the only group trading higher with a gain of 0.8%.
Caterpillar Inc. was among the biggest losers in the Dow industrials, falling 2.8%. The heavy equipment manufacturer has said tariffs would increase its material costs.
Shares of commodity-linked companies were among the hardest hit, as commodity prices were also pressured by a strengthening dollar. The WSJ Dollar Index, which measures the U.S. currency against 16 others, added 0.4%.
Copper futures declined 3.3% to around one-year lows. The metal, which is seen by many analysts as a barometer for global economic health, has been hit especially hard amid the escalating trade worries.
Shares of oil-and-gas companies also fell sharply as U.S. crude dropped 2.2% to $72.50 a barrel. Prices came under pressure after Libya indicated it would resume export activities at its eastern ports.
Shares of Exxon Mobil Corp. slipped 1.2%, and Chevron Corp. dropped 2.6%.
U.S. stocks have generally been more resilient to the trade tensions than their Chinese peers. In the past, they have rebounded relatively quickly from trade-related pullbacks, partly because the fallout on corporate earnings is expected to be fairly limited. The Shanghai Composite, meanwhile, has declined 16% this year, versus a 4.5% gain for the S&P 500, and the Chinese benchmark slumped 1.8% on Wednesday.
Some investors, though, are worried that product-specific tariffs could lead to price increases for U.S. consumers and put pressure on the Federal Reserve to raise interest rates.
And the latest round of economic data showed firming inflation, as a gauge of U.S. business prices rose in June. The producer-price index, a measure of the prices businesses receive for their goods and services, rose a seasonally adjusted 0.3% in June from a month earlier, the Labor Department said Wednesday. Economists surveyed by The Wall Street Journal had expected a 0.2% increase. Prices rose 3.4% from the year before, the largest annual increase since November 2011.
"More broadly, when we think about what it is that is going to sort of put an end to this market cycle, it's actually more likely going to be the Fed than it is a global trade war," said Emily Roland, head of capital markets research at John Hancock Investments.
The yield on the 10-year U.S. Treasury note fell to 2.853% from 2.873% on Tuesday. Yields decline as prices rise.
Market participants had been tentatively optimistic on trade earlier in the week, driving stocks higher as they looked toward what are expected to be positive second-quarter earnings reports.
Analysts expect earnings from S&P 500 companies to grow roughly 20% in the second quarter from the year-earlier period, according to FactSet. Major U.S. banks, including JPMorgan Chase & Co., will announce their results Friday.
"Investors are definitely going to be more focused on fundamentals as we head into earnings season," Ms. Roland said. "The key challenge is going to be deciphering whether any mentions of trade or tariffs are excuses for potentially poor business results, or are they actually a real element that's weighing on equities."
Elsewhere, trade jitters hit international markets, with the Stoxx Europe 600 down 1.3%. In Asia, Hong Kong's Hang Seng dropped 1.3% amid losses in tech companies. Japan's Nikkei fell 1.2%, and South Korea's Kospi declined 0.6%.
Bob Davis and David Hodari contributed to this article.