US STOCKS-Wall St trims gains as early rally fades
* Japan's Nikkei posts biggest one-day gain in 7 years
* Apple up marginally ahead of annual product launch event
* Barnes & Noble falls after sales fall for 5th straight quarter
* Indexes up: Dow 0.24 pct, S&P 0.24 pct, Nasdaq 0.20 pct (Adds details, changes comment, updates prices)
By Tanya Agrawal
Sept 9 (Reuters) - Wall Street trimmed early gains and was little changed in late morning trading on Wednesday as the rally fueled by hopes of further stimulus measures in China faded.
China's Ministry of Finance said on Wednesday the government will strengthen fiscal policy, boost infrastructure spending and speed up reform of its tax system, adding to other steps to reenergize sputtering growth.
The Shanghai Composite closed 2.3 percent higher on Wednesday. Adding to the positive sentiment, Japan's Nikkei 225 rose 7.7 percent, its biggest one-day rise since the global financial crisis, as Prime Minister Shinzo Abe signaled a cut in corporate taxes.
"What's causing us to trade lower isn't anything fundamental and is more technical," said Ryan Larson, head of U.S. equity trading at RBC Global Asset Management in Chicago. Continuación...