The day's crude rally faded earlier after government data showed gasoline inventories rose, bucking expectations of a decline.
The euro was held hostage by the crisis in Greece while the dollar held firm after solid U.S. housing data bolstered the case for the Fed rate hike.
U.S. stocks closed higher as the Fed began its two-day meeting and investors attempted to shake off worries about the Greece debt talks.
European equities closed higher on Tuesday after paring losses in earlier trade, with investors keeping watch for developments in Greece reform talks.
The euro rose on Wednesday shortly after the U.S. Federal Reserve left its benchmark interest rates unchanged.
U.S. Treasurys were on a firm footing Tuesday as worries about Greece bolstered the market's safe-haven appeal before a U.S. Federal Reserve meeting.
U.S. crude oil prices edged up Tuesday on warnings a tropical storm was about to hit the coast of the oil-producing state of Texas.
U.S. stock futures pointed to a flat to slightly higher open, with the spotlight shifting from the crisis in Greece to the Federal Reserve.
Gold ended lower on Tuesday as the dollar firmed ahead of the U.S. Federal Reserve policy meeting.
U.S. stocks closed lower as investors remained anxious over stalled Greece debt talks and the upcoming two-day Federal Reserve meeting.
Asian shares extended their selloff on Tuesday, as Greece's debt talks and the upcoming two-day Federal Reserve meeting sapped risk appetite.
European equities closed sharply lower on Monday after talks between Greece and its creditors collapsed at the weekend.
U.S. bond prices extended early gains after two economic readings showed unexpected weakness.
Asian stocks declined on Monday on the back of concerns over Greece's debt talks and fresh tightening of margin financing in China.
Gold rose on Monday, buoyed by chart-based buying and the weak U.S. dollar ahead of a Federal Reserve policy meeting.
U.S. stock futures pointed to a weak open on Wall Street Tuesday, with Greece jitters expected to weigh on sentiment before a Federal Reserve meeting.
Oil prices fell on Monday as the Greek debt crisis helped boost the dollar and as United Nations talks offered a chance for peace in Yemen.
The euro erased losses on Monday after the Sunday failed debt talks between Greece and its creditors.
U.S. stocks traded lower as uncertainty over Greece weighed on sentiment and investors kept an eye on bond yields ahead of next week's FOMC meeting.
Treasurys rose with longer-dated yields retreating further from seven-month highs as concerns about a Greek default spurred safety bids.
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