Catch up on today's top five analyst upgrades with this list compiled by The Fly: 1. Apple (AAPL) upgraded to Outperform from Market Perform at Raymond James with analyst Tavis McCourt saying he expects a "long, slow re-rating" of the shares as the iPhone maker shifts to a consumer staple. 2. Linear Technology (LLTC) upgraded to Neutral from Sell at Citi, to Sector Weight from Underweight at Pacific Crest, and to Market Perform from Underperform at Raymond James. 3. Analog Devices (ADI) upgraded to Outperform from Perform at Oppenheimer, to Overweight from Equal Weight at Morgan Stanley, to Buy from Hold at Evercore ISI, and to Neutral from Sell at Goldman. 4. Alaska Air (ALK) upgraded to Overweight from Neutral at JPMorgan with analyst Jamie Baker saying the shares at current levels are "simply too cheap to ignore." 5. Chesapeake (CHK) upgraded to Accumulate from Hold at Johnson Rice. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage,
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