US equity futures were mixed before Wednesday's opening bell, ahead of the Federal Reserve's interest-rate decision and key earnings from the technology sector.

Dow Jones Industrial Average futures were down 0.02%, S&P 500 futures were 0.2% higher, and Nasdaq futures were up 0.8%.

Oil prices were higher, with front-month global benchmark North Sea Brent crude up 0.9% at $67.16 per barrel and US West Texas Intermediate crude 1.2% higher at $63.12 per barrel.

Microsoft (MSFT), Meta Platforms (META), and Tesla (TSLA) are scheduled to report quarterly results after the closing bell.

The policy-setting Federal Open Market Committee is scheduled to release a monetary policy statement at 2 pm ET, followed at 2:30 pm by Chair Jerome Powell's press conference.

In other world markets, Japan's Nikkei closed 0.1% higher, Hong Kong's Hang Seng ended 2.6% higher, and China's Shanghai Composite finished 0.3% higher. Meanwhile, the UK's FTSE 100 was down 0.6%, and Germany's DAX index was 0.7% lower in Europe's early afternoon session.

In equities, ASML (ASML) shares were 4.8% higher pre-bell after the company reported higher Q4 earnings and sales. Seagate Technology (STX) stock was up 9% after the company reported late Tuesday stronger fiscal Q2 financial results.

On the losing side, Qorvo (QRVO) shares were 11% lower, a day after the company issued fiscal Q4 guidance that trailed analysts' projections.