US STOCKS-Futures tread lower for fourth day; Fed meet awaited
* Indexes down: Dow 29 pts, S&P 4.75 pts, Nasdaq 11.25 pts
By Yashaswini Swamynathan
June 14 (Reuters) - U.S. stock index futures were lower for the fourth straight day as investors braced for the Federal Reserve's policy meeting and a referendum on Britain's European Union membership.
* The Federal Open Market Committee (FOMC) will commence its two-day meeting on Tuesday to decide whether the U.S. economy has recovered enough to be able to absorb an interest rate hike.
* While traders have discounted a hike this month, they will parse Fed Chair Janet Yellen's speech at a conference on Wednesday for clues on the health of the economy and the timing of the next hike.
* Yellen, who had been dropping hints last month of a rate hike in the near term, toned down her comments after a dismal May employment report set off fresh concerns of the strength of the economy.
* Traders have priced in a 17.9 percent chance of a rate hike next month and a 29 percent chance in September, according to CME Group's FedWatch tool.
* Oil prices extended losses as investors remained nervous over the rising possibility of Britain exiting the European Union when it votes on June 23.
* Recent opinion polls have indicated growing support for Brexit, adding to investor concerns. Continuación...