US STOCKS-Wall St keeps gains after Fed leaves rates unchanged
* Fed leaves rates unchanged, lowers economic growth forecast
* Fed Chair Janet Yellen to speak at 2:30 p.m. EDT
* May producer price index up 0.4 pct vs est 0.3 pct
* Indexes up: Dow 0.37 pct, S&P 0.36 pct, Nasdaq 0.36 pct (Updates to with detail after Fed statement)
By Noel Randewich
June 15 (Reuters) - Wall Street maintained gains on Wednesday after the Federal Reserve left its key interest rate unchanged, as expected, but signaled it still plans two rate increases this year.
The U.S. central bank also lowered its economic growth forecasts for 2016 and 2017 and indicated it would be less aggressive in tightening monetary policy after the end of this year.
Fed Chair Janet Yellen is scheduled to hold a press conference at 2:30 p.m. (1830 GMT).
"It's as dovish as the Fed can get without actually cutting rates," said Brian Jacobsen, chief portfolio strategist at Wells Fargo Funds Management in Menomonee Falls, Wisconsin. Continuación...