Global markets were largely cautious on Wednesday, with U.S. equities opening lower, oil prices fluctuating, Treasuries little changed and the dollar extending gains as the Federal Reserve's hawkish stance supported the currency. The Dow Jones Industrial Average fell 0.18% at the open, while the S&P 500 and Nasdaq Composite slipped 0.11% and 0.13%, respectively. Meta rose 1.13%, SK hynix fell 1.57% and IonQ jumped 13%, its biggest intraday gain since July 30. The dollar index advanced 0.1% for a fourth straight session, reaching its highest level since July, while the yen weakened 0.1% to 157.56 per dollar. The Australian 10-year government bond yield fell six basis points to 5.24%. Oil and markets remained sensitive to U.S.-Iran developments after representatives from both countries held three hours of talks at the United Nations at the U.S. request and prepared for further meetings. Trump said he faced a choice between reaching an agreement with Iran to end the war and rapidly destroying Iran, while also saying he believed a deal would be reached after the midterm elections. Brent crude was reported at $96.37 a barrel after rising as much as 1.0% intraday, while it also traded in a broad range near $99.50. Spot gold fell below $4,300 an ounce to $4,299.92, with another market reading putting it down 0.4% at about $4,345. Bitcoin rose more than 1% to about $87,200. U.S. manufacturing and services PMI (business activity surveys) readings were expected to remain consistent with steady growth, while the eurozone composite PMI rose from 52 in August to 53.1, well above the 50 threshold separating expansion from contraction. The eurozone private sector expanded at its fastest pace in more than three years, driven by stronger-than-expected services activity.