Gold fell modestly, as the Federal Reserve continued on track with its plans to wind up its crisis-era monetary stimulus.
Oil gave back most of the day's gains as a surprise jump in U.S. crude inventories overwhelmed the impact of a possible OPEC output cut.
The U.S. dollar strengthened following Fed news after earlier hitting an 8-year high against the Japanese yen.
Asian stocks were mixed on Wednesday on speculation whether the U.S. Fed will maintain its dovish policy stance and following reports of Chinese stimulus.
U.S. stock-index futures ticked up on Wednesday, as investors waited to learn whether the Fed will maintain its dovish policy stance.
Stocks rose Tuesday as investors mulled the timing of rate hikes by the Federal Reserve.
U.S. Treasury bond yields declined on Tuesday, with rates on short-dated notes falling faster than those with longer maturities.
European shares closed lower with investors looking ahead to a key Federal Reserve policy meeting this week as well as a referendum on Scottish independence.
Gold ended modestly higher on Tuesday ahead the Federal Reserve's policy announcement, but remained near an eight-month low.
Crude jumped as the prospect of a likely supply cut from OPEC outweighed the impact of weak demand from the world's biggest energy consumers.
Renewed sales of the Australian dollar were the main move on major currency markets on Tuesday.
Asian equity markets ended mostly lower on Tuesday as investors awaited the start of a U.S. Federal Reserve meeting later in the day.
U.S. stock index futures pointed to a lower start to trade on Tuesday, as investors awaited the start of the Federal Reserve meeting.
U.S. stocks mostly held steady on Monday, but the Nasdaq Composite and technology shares fell.
U.S. Treasury bonds traded flat to higher on Monday, ahead of the Federal Reserve's policy decision on Wednesday.
European shares closed slightly lower on Monday, with trade range-bound due to concerns over the upcoming Fed meeting and Scotland vote.
Brent and U.S. crude rebounded modestly in choppy trading, with weak Chinese data briefly pushing the October Brent contract to a two-year low.
Gold settled higher on softer stocks after disappointing data from China, was still near an eight-month low ahead of the Fed's policy meeting.
Sweden's crown fell to a two-month low against the euro after the country elected a minority government.
Asian stock markets were mostly lower on Monday following weak Chinese data while overall trading volumes were light with Japan closed for a holiday.
Get the best of CNBC in your inbox
Lower oil prices slammed Occidental Petroleum's third-quarter profit, but bolstered airline company earnings.
Oil is skidding amid oversupply and concerns about slowing growth and deflation.
Companies are maintaining guidance for the fourth quarter, easing concerns that slower global growth will hit Q4 earnings.