US shares are seen opening lower midweek as all eyes are on the Fed's policy decision later.
It is widely thought that the meeting will have struck a cautioius stance amid slow growth and a global economy still full of jitters. It is unlikely the chair Janet Yellen will raise interest rates.
It was a mixed bag on Tuesday as the Dow Jones closed up 13 at 17,990 and the S&P500 also finished higher - around four at 2,091. The tech heavy Nasdaq shed around seven however to stand at 4,888.
Gains made were aided by the energy sector, but they cam too late to save oil giant Exxon Mobil (NYSE:XOM) from losing its triple-A credit crown after 60 years.
Exxon Mobil and corporate America suffered a blow to their prestige when Standard & Poor's stripped the oil giant of its top-tier triple-A credit. Now only two companies in the US still have AAA status: Microsoft Corp. and Johnson & Johnson.
Meanwhile, in futures trading today, the Dow Jones Index is down 27 points, while the S&P500 shed 3.5 points and Nasdaq futures are down over 42.
Significantly, tech behemoth Apple (NASDAQ:APPL) reported after the bell yesterday and shares slumped over 7% in pre-market to US$96.83 after it saw a 13% drop in revenue, the first dip in 13 years, which it blamed on the ever slipping sales of its flagship iPhone.
It lopped off more than $40bln in the group's market value in just under an hour - to compare, that's roughly the entire market value of Netflix