US equity futures posted narrow gains before Wednesday's opening bell as traders digested the impact of Tuesday's consumer inflation report.

Dow Jones Industrial Average futures gained 0.1%, S&P 500 futures increased 0.2%, and Nasdaq futures were up 0.3%.

Data released Tuesday by the Bureau of Labor Statistics showed the US seasonally adjusted consumer price index rebounded by 0.2% in April from March's 0.1% decline, below expectations for a 0.3% increase in a survey compiled by Bloomberg.

Oil prices were lower, with front-month global benchmark North Sea Brent crude down 1% at $66.02 per barrel and US West Texas Intermediate crude 1% lower at $63.04 per barrel.

In other world markets, Japan's Nikkei closed 0.1% lower, Hong Kong's Hang Seng ended 2.3% higher, and China's Shanghai Composite finished 0.9% higher. Meanwhile, the UK's FTSE 100 was up 0.1%, and Germany's DAX index was 0.2% lower in Europe's early afternoon session.

In equities, Innovative Eyewear (LUCY) shares were up 54% pre-bell after the company reported late Tuesday a narrower Q1 loss amid higher revenue. Everus Construction Group (ECG) stock was 17% higher, a day after the company posted higher Q1 financial results.

On the losing side, Grail (GRAL) shares were down 13% after the company reported Q1 revenue that trailed analysts' estimates.