Check out which companies are making headlines before the bell:
Bank of America — The No. 2 U.S. bank by assets earned 21 cents per share for the first quarter, 1 cent a share above estimates, with revenue also beating forecasts. However, the results were below year-ago levels on a drop in trading revenue and the ongoing impact of lower interest rates.
BlackRock — The asset management firm earned an adjusted $4.25 per share for its latest quarter, 4 cents a share below estimates. Revenue was also below forecasts in what CEO Larry Fink called a "challenging market environment." BlackRock did announce a 5 percent increase in its quarterly dividend.
Delta Air Lines — Delta posted quarterly profit of $1.32 per share, 2 cents a share above estimates. The airline's revenue, however, fell slightly short, with some negative impact from the stronger dollar.
CME Group — The exchange operator announced it would shut down its New York trading floor at the end of 2016 because of low volume.
Gap — The apparel retailer named executive Sonia Syngal as the new president of its Old Navy unit.
McDonald's — McDonald's is targeting private-equity firms as it moves forward with a sale of 2,800 restaurants in North Asia, according to Reuters.
Tiffany, Michael Kors — These and other luxury goods sellers could be under pressure once again, following a profit warning from Britain's Burberry Group. That stock group had been impacted earlier this week on downbeat results from France's LVMH.
Unilever — Unilever reported quarterly results that were in line with estimates, but the consumer products giant continues to see falling U.S. and European sales.
Twitter — Twitter's service has been restored after a service outage impacting users in Japan, Singapore, and elsewhere.
Valeant — Valeant's corporate credit rating was lowered to "B" from "B+" by Standard & Poor's, which said the move reflects increased risk if Valeant is unable to file its 10K by April 29 and is put in default by debt holders.
Pier 1 Imports — Pier 1 beat estimates by 2 cents with quarterly profit of 23 cents per share, with revenue also beating forecasts. However, the retailer gave a full-year forecast that falls shy of Street estimates, even though Pier 1 said it is making progress in dealing with ongoing inventory issues.
Seagate Technology — Seagate cut its outlook for its most recent quarter, because of weaker demand for enterprise disk drives, among other factors. Rival disk drive maker Western Digital is also seeing some pressure based on Seagate's outlook.
Kate Spade — The apparel maker was added to the "Focus List" at Citi, which said the most recent results at Kate Spade have re-instilled investor confidence and that the stock is now more likely to provide growth at a reasonable price.
PepsiCo — Stifel Nicolaus downgraded the beverage and snack maker to "hold" from "buy," pointing to valuation and a shortage of growth catalysts.
Symantec — Evercore downgraded the cyber security products maker to "sell," due to turmoil stemming from significant management turnover.