Wall Street rises ahead of Fed's decisions

US stock indices climbed on Wednesday, boosted by the tech sector ahead of the Federal Reserve's interest rate decisions. 

The Fed will announce interest rate decisions later today, expected to hike rates by 75 basis points to control inflation.

Corporate quarterly results continue to be released, with Microsoft releasing results yesterday.

Dow Jones rose 0.5% to 31,912 as of 14:40 GMT, while S&P 500 rose 1.3% to 3,970, as NASDAQ climbed 2.3% to 11,829.