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* U.S. tariffs on $200 bln of Chinese goods expected in Sept
* Material sector drops as metal prices hit by trade woes
* Dollar Tree hit by bleak forecast
* EA falls on delayed game launch, bookings forecast cut
* Indexes: Dow down 0.33 pct, S&P off 0.20 pct; Nasdaq up 0.12 pct (Adds comments, updates to early afternoon)
By Shreyashi Sanyal
Aug 30 (Reuters) - The S&P 500 and the Dow Jones Industrial Average slipped on Thursday, after four sessions of gains, over concerns about the U.S.-China trade war, but gains in technology stocks helped lift the Nasdaq.
Washington has proposed slapping tariffs on a further $200 billion worth of Chinese goods, which will come into effect next month after a public comment period ends on Wednesday, Sept. 5.
Metal prices fell as the Sino-U.S. trade tensions upstaged optimism that the United States and Canada could clinch a new North American Free Trade Agreement (NAFTA).
The S&P materials index sank 1.27 percent, the most among the 11 major S&P sectors. Trade-sensitive industrials fell 0.5 percent, led by Caterpillar’s 1.2 percent decline.
However, high-profile technology stocks provided support. Facebook was up 2 percent and Apple rose 1.4 percent.
Amazon rose as much as 1.4 percent to a record high of $2,025.57, moving closer to joining Apple in the $1 trillion market cap club. Amazon was last up 1.3 percent.
“I would never bet against the tech leaders, because every single time the markets have ticked down the tech stocks seemed to have eventually gained enough to close the markets higher and today should be no different,” said Brad McMillan, chief investment officer at Commonwealth Financial Network in Waltham, Massachusetts.
At 12:49 p.m. ET the Dow Jones Industrial Average was down 87.09 points, or 0.33 percent, at 26,037.48, the S&P 500 was down 5.79 points, or 0.20 percent, at 2,908.25 and the Nasdaq Composite was up 10.08 points, or 0.12 percent, at 8,119.77.
The declines come after a four-day run of record gains for the S&P 500 and the Nasdaq.
“Markets were at new highs, so they are due for a pullback now. Since earnings season has ended, the focus is going to shift from earnings to economic news,” said John Augustine, chief investment officer at Huntington Private Bank in Columbus, Ohio.
Eight of the 11 S&P sectors were lower, with financial and energy stocks dragging the S&P lower.
Dollar Tree slid 13.2 percent, the most on the S&P, after reporting lower margins and forecasting a disappointing full-year profit.
Electronic Arts fell 9.5 percent after the videogame maker delayed the launch of “Battlefield V” by 4 weeks and trimmed its full-year net bookings forecast.
Signet Jewelers soared 25.4 percent after the company topped sales and profit estimates and raised its full-year sales forecast.
Declining issues outnumbered advancers for a 1.75-to-1 ratio on the NYSE and a 1.21-to-1 ratio on the Nasdaq.
The S&P index recorded 29 new 52-week highs and one new low, while the Nasdaq recorded 78 new highs and 30 new lows. (Reporting by Shreyashi Sanyal in Bengaluru; Editing by Shounak Dasgupta)