U.S. stock futures climbed on Tuesday, with Dow Jones Industrial Average futures up 0.4%, S&P 500 futures rising 0.4%, and Nasdaq 100 futures advancing 0.8%. Investors are positioning ahead of Nvidia's quarterly earnings report and the personal consumption expenditure (PCE) price index for July, both due Wednesday. Federal Reserve Chair Kevin Warsh is also expected to speak at the Jackson Hole symposium on Friday.

Separately, Bitcoin crossed above $80,000 for the first time since May, surging more than 20% over the past seven days. The iShares Bitcoin ETF recorded net inflows for six consecutive sessions through Monday. The 10-year Treasury yield was last trading down more than 3 basis points at 4.666%.