Before the bell:

U.S. stocks were poised to open little changed Wednesday, ahead of the Federal Reserve's latest interest rate decision.
Stocks rose Tuesday, as investors anticipated that Greek Prime Minister George Papandreou would win a confidence vote and be able to push ahead with more austerity measures.
After the closing bell, Greek lawmakers voted to support Papandreou's government. The win boosted the likelihood that the country will be able to secure a bailout package and avert a default.
But Tuesday's optimism shifted to caution early Wednesday, as investors awaited the Fed's latest interest rate decision. Most expect the Fed will keep rates steady but investors are keen to hear what Chairman Ben Bernanke has to say about the economy.
Economy: The central bank will conclude its two-day meeting on Wednesday, with the interest rate decision being announced at 16:30 GMT Bernanke's press conference starts at 18:15 GMT.
Companies: Shares of Adobe Systems Inc. (ADBE) slumped more than 5% in premarket trading. The software maker posted a 54% jump in second-quarter profit after the market close Tuesday, but issued a revenue outlook that fell short of expectations.
Carmax (KMX, Fortune 500) reported first-quarter earnings that widely beat expectations, sending shares of the company 8% higher before the opening bell.
Royal Phillips Electronics (PHG) warned that second-quarter profit would drop sharply and miss expectations. U.S.-listed shares of the electronics maker tumbled 13%.
Shares of BB&T Corp. (BBT, Fortune 500) climbed more than 1% after the company announced a third-quarter dividend of 16 cents late Tuesday. The company will release second-quarter earnings Wednesday morning.
FedEx (FDX, Fortune 500) reported earnings and sales that topped forecasts, and hiked its outook. That sent shares of the shipping company up 3% in premarket trading. Shares of rival UPS (UPS, Fortune 500) edged up 1.3%.
Bed Bath & Beyond (BBBY, Fortune 500) will report quarterly results after the market close Wednesday. The home decor retailer is expected to earn 62 cents a share.
World markets:

Oil for August delivery slipped 26 cents to $93.91 a barrel.
Gold futures for August delivery added 30 cents to $1,546.70 an ounce.
Bonds: The price on the benchmark 10-year U.S. Treasury rose, pushing the yield down to 2.95% from 2.99% late Tuesday.