Shares of Apple fell 4.4% to $333.10 in premarket trading.
NEW YORK ( TheStreet) -- Apple ( AAPL) CEO Steve Jobs announced Monday he was taking another medical leave, this time with no specified return date. The company also reports earnings after the closing bell Tuesday.
Citigroup ( C) posted fourth-quarter earnings of 4 cents a share. The Wall Street consensus called for earnings of 8 cents a share. Citigroup shares were down 2% to $5.03.
Delta Air Lines ( DAL) reported adjusted fourth-quarter earnings of 19 cents on operating revenue of $7.8 billion. Analysts, on average, were expecting earnings of 26 cents a share on revenue of $7.73 billion. Delta stock was down 2% to $12.50.
IBM ( IBM) is slated to post fourth-quarter earnings Tuesday after the market closes. The Wall Street consensus is calling for earnings of $4.08 a share on revenue of $28.26 billion. IBM shares were down 0.2% to $149.72.
Comerica ( CMA) agreed to acquire Sterling Bancshares ( SBIB) in a deal that values Sterling at $10 a share, or $1.027 billion. Comerica shares fell 3.9% to $40.59; Sterling was surging by 20.8% to $9.30.
Danaher ( DHR) signed a definitive agreement to sell its Pacific Scientific Aerospace business to Meggitt U.K. aerospace company, for $685 million. Premarket trades weren't available for Danaher. Shares of the company ended Friday's trading session 0.6% higher at $47.15.
GlaxoSmithKline ( GSK) was falling 3.8% to $37.70 in early trading as Reuters reported that the company will report a legal charge of 2.2 billion pounds ($3.4 billion) in the fourth quarter, related to more claims over the sales of its Avandia drug.
>>Search for Highest Dividends by Rate or Yield
|More on Earnings Today's Top Earnings|