US equity futures were mixed pre-bell Tuesday as traders awaited inflation data while weighing earnings from major banks.

Dow Jones Industrial Average futures were down 0.1%, S&P 500 futures were up 0.3%, and Nasdaq futures were 0.5% higher.

JPMorgan Chase (JPM) reported lower Q2 earnings and revenue that still topped analysts' estimates. Wells Fargo (WFC) reported higher Q2 earnings and revenue. Bank of New York Mellon (BK) reported higher Q2 adjusted earnings and revenue.

Oil prices were little changed, with front-month global benchmark North Sea Brent crude hovering at around $69.26 per barrel and US West Texas Intermediate crude nearly flat at $66.97 per barrel.

The Consumer Price Index, scheduled for release at 8:30 am ET, is expected to show a 0.3% increase for June following a 0.1% uptick in the preceding month, according to estimates compiled by Bloomberg.

The Empire State Manufacturing Index, also due at 8:30 am ET, is seen coming in at minus 8.3 for July versus June's minus 16.0.