US STOCKS-Wall St set to open slightly lower
* 2nd-qtr GDP expands at 1.4 pct rate
* Weekly jobless claims rise less than expected
* Futures down: Dow 28 pts, S&P 4 pts, Nasdaq 9 pts (Adds details, comments, updates prices)
By Yashaswini Swamynathan
Sept 29 (Reuters) - U.S. stocks looked set to open slightly lower as oil prices lost ground and investors assessed a set of economic data ahead of Federal Reserve Chair Janet Yellen's speech.
An agreement among major oil producing countries to curb output resulted in a near 6 percent surge in Brent crude prices on Wednesday, but investors were worried about a lack of clarity on details of the deal. Brent crude fell 0.82 percent.
Wall Street cut losses on Wednesday, ending the session higher as the oil rally boosted shares of energy companies.
U.S. economic growth was less sluggish than previously thought in the second quarter as gross domestic product expanded at a 1.4 percent annual rate, compared with the prior estimate of 1.1 percent rise.
Another report showed that the number of Americans applying for jobless claims rose less-than-expected last week. Continuación...