US STOCKS-Dow, S&P 500 fall on Fed nervousness; Nasdaq inches up
* American Airlines shares up; oil prices fall
* Investors wait for Fed comment on rate hikes
* Indexes: Dow down 0.7 pct, S&P down 0.3 pct, Nasdaq up 0.2 pct (Updates to close)
By Caroline Valetkevitch
March 17 (Reuters) - The Dow and S&P 500 fell on Tuesday as commodity-related shares declined and nervousness increased ahead of a Federal Reserve statement, while the Nasdaq ended higher.
Stocks cut losses in afternoon trading, led by a rise in tech shares. The S&P 500 technology index was up 0.1 percent, helped by gains in Apple, up 1.7 percent at $127.04, and Facebook, up 1.7 percent at $79.36.
After the bell, shares of Oracle rose 3.4 percent to $44.33 following results.
Investors were anxious as the Federal Open Market Committee kicked off its two-day meeting, to be followed by a statement from Chair Janet Yellen Wednesday afternoon.
Most economists expect the Fed to remove a pledge to be "patient" about raising interest rates from its statement, but analysts said the Fed may still be on track to raise rates by June. Continuación...