Check out which companies are making headlines before the bell:
Bank of America, JPMorgan Chase– Jefferies is initiating coverage on the two bank stocks with "buy" ratings, in a report titled "Still Risks, But More Rewards". It said the two group in general offers an attractive risk/return profile, although it does rate Citigroup a "hold".
Twitter–Cantor Fitzgerald cut its rating on Twitter shares to "sell" from "hold", based on what it considers excessive valuation.
Constellation Brands–The spirits maker earned $1.10 per share for its third quarter, beating estimates by 19 cents. Revenue also beat estimates, and the company also boosted its 2014 outlook.
Forest Labs–The drug maker is buying specialty pharmaceutical company Aptalis Holdings for $2.9 billion in cash from private equity firm TPG.