Apple (NASDAQ:AAPL) Jefferies upgraded Apple shares to Buy from Hold and raised its price target for the stock to $600 from $425. After speaking with suppliers in Asia, Jefferies believes there is a “substantial shift in attitudes” toward Apple. Jefferies believes suppliers have become far more lenient on price, which should boost Apple’s gross margins. The firm also finds the stock attractively valued at current levels. Shares of Apple closed Friday up $2.13, to $485.16.