US stock index futures showed little movement before Wednesday's market open, reflecting investor caution amid escalating tensions in the Middle East and rising crude oil prices. The conflict continued to dominate market sentiment, with crude oil surpassing $90 per barrel due to attacks on vessels in the critical Strait of Hormuz. This vital chokepoint for global oil shipments has become a focal point of concern, potentially threatening supply chains and driving up energy costs.

Investors are closely monitoring the situation, awaiting the release of key economic data, particularly the Consumer Price Index (CPI), which could provide crucial insight into inflation trends and guide future market direction.