US stocks wobble as Fed moves awaited
(Close): Wall Street markets had a bumpy trading day ahead of the results of a Federal Reserve meeting on Wednesday.
The Dow Jones industrial average rose 21.99 points to 17,145.65.
Analysts do not expect a US interest rate rise on Wednesday, but are eager for signs of the Fed's future plans.
"Policy will almost certainly be left on hold," said Jim O'Sullivan of High-Frequency Economics. "With no change in rates, the focus will be entirely on forward guidance."
The trading mood was dampened further by a weak US retail sales report and a 2% decline in oil prices.
Valeant was Tuesday's biggest loser after the company reported a larger than expected loss. The pharmaceutical company's shares fell over 51% as fears rose that it may face a default on some of its loans.
Commodity linked companies saw some of the day's biggest gains.