"In this Tuesday, Oct.  23, 2012, file photo Apple CEO Tim Cook speaks during an event to announce new products in San Jose, Calif. Apple CEO Tim Cook sought to assure shareholders Wednesday, Feb. 26, 2013, that the company is working on some ""great stuff"" that may help reverse a sharp decline in its stock price.  (AP Photo/Marcio Jose Sanchez, File) Photo: Marcio Jose Sanchez"