Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Twitter (TWTR) downgraded to Underperform at BofA/Merrill and to Neutral at JPMorgan. JPMorgan analyst Doug Anmuth said the company's Q1 results show user and advertising challenges continue. He added that product changes have been slower and less impactful than expected. He also notes increased competition from Facebook's (FB) core Newsfeed, Instagram and Snapchat. 2. Apple (AAPL) was downgraded to Perform at Oppenheimer by analyst Andrew Uerkwitz, who said the weaker performance in this quarter is likely to recur until 2017's iPhone launch. He said there is a lengthening of the replacement cycle across the smartphone market to which Apple is not immune. The company was also downgraded to Buy at Goldman, with analysts led by Simona Jankowski saying the shares are expected to be weak near-term until the market gets comfortable with the iPhone 7 product cycle. She said she was encouraged by the iPhone installed base being up 80% versus 2 years ago. 3. DuPont (DD) double downgraded to Underperform at CLSA by analyst Mark Connelly, who cited "stretched" valuation given a less certain outlook for ethylene and concerns about Dow's cycle risk. 4. Chipotle (CMG) downgraded to Neutral at BTIG with analyst Peter Saleh saying he expects the company to recover lost sales, but is uncertain on the timing of the recovery and the promotional effort needed following the significant promotions in February and March and the lack of any discernible improvement. 5. Capital One (COF) downgraded to Underperform at BofA/Merrill by analyst Kenneth Bruce, who said he is increasingly concerned that sub-prime credit card growth could drive higher losses than is currently factored into expectations or maintained guidance. Bruce sees little upside to shares given worsening visibility and credit metrics. 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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