US equity futures were mostly flat early Wednesday, as markets reacted to ongoing uncertainty stemming from the Iran conflict and anticipated fresh US inflation figures. The standoff in the Strait of Hormuz and volatility in oil prices have kept investors on alert, with upcoming economic data expected to shape views on Federal Reserve policy.

US futures tracking the Dow Jones Industrial Average, S&P 500 and Nasdaq 100 all edged down 132, 36.5, and 9.25 points or less than 0.1% respectively.

Concerns over the impact of the Iran war on global markets have led to increased turbulence in both equities and energy prices during the week. Oil market participants continue to monitor the situation in the Strait of Hormuz following a report from the United Kingdom’s Royal Navy that three vessels had come under fire Wednesday morning. The strait, an essential passage for crude shipments, remains a focal point for supply disruption fears.