Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Tesla (TSLA) downgraded to Neutral from Buy at Roth Capital with analyst Craig Irwin saying he believes Tesla has a viable path to meet at least the low end of its 360,000-400,000 deliveries guidance for 2019, but this does not eliminate margin risks from rising 2019 battery costs or the impact of intensifying competition. 2. Marvell (MRVL) downgraded to Neutral from Buy at Goldman Sachs with analyst Mark Delaney citing valuation. 3. Brunswick (BC) downgraded to Neutral from Overweight at JPMorgan with analyst Steven Zaccone saying commentary from industry participants indicates worsening marine industry growth, and Brunswick is heavily exposed to the most pronounced areas of weakness in aluminum fish boats and outboard engines. 4. Westlake Chemical (WLK) downgraded to Reduce from Neutral at Nomura Instinet while LyondellBasell (LYB) was downgraded to Neutral from Buy. 5. Paysign (PAYS) downgraded to Sell from Neutral at BTIG with analyst Mark Palmer citing valuation. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.