Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Symantec (SYMC) downgraded to Underperform from Hold at Jefferies with analyst John DiFucci saying the company's current guidance is not achievable and the stock will rerate lower upon investor realization. 2. Juno Therapeutics (JUNO) downgraded to Neutral from Buy at Citi with analyst Robyn Karnauskas saying Juno could be worth $110 per share in a takeover. 3. Comcast (CMCSA) downgraded to Neutral from Buy at Nomura Instinet with analyst Jeffrey Kvaal saying the company faces "heightened challenges" with over-the-top services driving declines in linear video and broadband growth likely to slow. 4. First Solar (FSLR) downgraded to Neutral from Buy at Guggenheim with analyst Sophie Karp citing valuation and limited near-term catalysts. 5. Chevron (CVX) downgraded to Hold from Buy at HSBC. 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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