The dollar was range-bound in illiquid Asian trade as currencies tread water ahead of the global central bankers' gathering in Jackson Hole.
Oil prices rose, bouncing back from a selloff in the previous session, on expectations the dollar would weaken ahead of a key speech Yellen.
Gold hit four-week lows on Thursday, under pressure from upbeat U.S. data.
Futures indicated a lower open as traders analyzed economic of data and anticipated Friday's speech from U.S. Federal Reserve Chair Janet Yellen.
Stocks closed lower, with health care shedding 1.5 percent, while investors eagerly awaited a speech from Janet Yellen.
U.S. government debt prices were flat to slightly higher Wednesday, as traders kept an eye on oil and data ahead of the Jackson Hole meeting.
European stocks finished mixed on Wednesday, as investors focused on volatility in commodity markets and looked ahead to a speech by the Federal Reserve chair later on this week.
Markets in Asia finished mixed on Wednesday, despite Wall Street's gains overnight, as traders remained in a wait-and-see mode ahead of Jackson Hole.
Investors focused on a gathering of central bankers for clues on when the U.S. Federal Reserve will hike interest rates again.
Oil prices fell as an unexpected increase in U.S. crude stocks revived worries about the supply glut that has capped prices for two years.
Gold futures fell on Wednesday as investors moved from the sidelines ahead of a speech by Federal Reserve chair Janet Yellen this weekend.
U.S. stock index futures pointed to a flat open on Wednesday, as investors concentrate on fluctuating oil prices and key data releases.
U.S. stocks closed higher as investors looked ahead to Federal Reserve Chair Janet Yellen's speech at the end of the week.
U.S. government debt prices ticked lower on Tuesday as traders reacted to the renewed decline in oil prices ahead of the Jackson Hole meeting this week.
European stocks posted solid gains by Tuesday's close, as sentiment was buoyed by positive data out of the euro zone.
Asian markets were mixed on Tuesday, with the Nikkei ending lower as stocks came under pressure due to a weaker dollar buoying the yen.
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.