Oil prices turned positive after Reuters reported Iran is sending positive signals that it may support joint action to prop up the oil market.
Investors shifted their focus away from hawkish remarks on interest rates by Fed officials and towards Friday's Jackson Hole meeting.
Gold edged higher as markets focused on a meeting of global central bankers Friday, awaiting further guidance on interest rates.
Futures ticked higher, as investors looked to a further set of earnings, and looked ahead to a key speech by the Fed's Chair.
U.S. stocks closed mostly lower, with energy falling nearly 0.9 percent.
U.S. bonds were mixed on Monday, as investors remained cautious in anticipation of the Fed's Jackson Hole meeting, due later this week.
European markets closed under pressure on Monday as investors failed to shake off the sharp declines seen in commodities.
Most Asian markets retreated on Monday, with traders likely holding their horses ahead of a speech from Fed chair Janet Yellen on Friday.
The dollar rose after comments from Fed Vice Chairman Stanley Fischer prompted bets on an interest rate hike.
Brent crude fell back below $50 a barrel on Monday as analysts doubted upcoming producer talks would rein in oversupply.
Gold hit a two-week low as upbeat comments from Fed officials boosted expectations that the central bank could lift interest rates.
Futures pointed to a lower open, as investors remain on edge ahead of the Fed's Jackson Hole meeting later this week, while keeping an eye on oil.
U.S. stocks closed lower as investors digested hawkish rhetoric from Fed officials and kept an eye on oil prices.
Bonds were lower as investors continued to digest the latest comments from several Federal Reserve speakers.
European stocks finished Friday in the red, as a sharp decline in mining stocks and banks added pressure to the region.
After wavering between gains and losses, Asia markets closed modestly higher, but major indexes in Australia and Japan posted weekly losses.
The dollar was weighed down by investors' lack of belief in the chances of a rise in U.S. interest rates this year.
Gold fell as hawkish comments from U.S. Federal Reserve officials renewed bets on a U.S. rate hike this year.
Brent crude oil prices were lower on Friday after rising above $51 a barrel to an eight-week high.
Stocks closed slightly higher, amid surging oil prices, as investors digested fresh economic data.