US STOCKS-Wall St falls as Fed holds steady and Brexit vote looms
* Fed leaves rates unchanged, lowers economic growth forecast
* Indexes end down: Dow 0.20 pct, S&P 0.18 pct, Nasdaq 0.18 pct (Updates with close of session)
By Noel Randewich
June 15 (Reuters) - Wall Street fell for a fifth straight session on Wednesday after the Federal Reserve left interest rates unchanged and investors stewed over an impending vote in Britain on whether to leave the European Union.
Major U.S. stock indexes spent most of the day with gains but abruptly fell late in the session, bringing the S&P 500's loss in the past week to 2.2 percent, in large part because of fears that a fractured EU could critically damage an already feeble global economy.
It was the S&P 500's longest losing streak since the five-day decline that culminated in its 2016 low on Feb. 11.
While the U.S. central bank put off an immediate rate hike, it lowered its economic growth forecast and signaled it still plans two rate increases this year.
Traders had not expected a rate increase this month by the Fed's Federal Open Market Committee, or FOMC, but they have been eager for clues about the health of the economy and the trajectory of future hikes.
Investors have become more nervous ahead of a vote in Britain next week on whether to leave the EU, with recent opinion polls indicating growing support for such a move. Continuación...