US STOCKS-Wall Street rally fizzles out as oil, materials fall
* S&P 500 index back in negative territory for 2016
* Nike down after revenue misses estimates
* Yum Brands up on talks to sell stake in China business
* Indexes down: Dow 0.45 pct, S&P 0.64 pct, Nasdaq 1.1 pct (Updates to close)
By Laila Kearney
March 23 (Reuters) - Wall Street closed lower on Wednesday as oil and materials share prices dropped while investors remained cautious a day after deadly bombing attacks in Belgium.
The benchmark S&P 500 index fell back into negative territory for the year after closing positive on Friday for the first time in 2016.
U.S. stocks' fading five-week rally was further diminished by comments over the past two days by Federal Reserve officials, who expressed views that suggested an appetite for more U.S. interest rate hikes than investors had anticipated.
The possibility of more than the two expected rate hikes through December has sent the dollar higher, pushing down commodity prices. Continuación...