Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Lexicon (LXRX) downgraded to Sell from Hold at Gabelli with analyst Kevin Kedra citing his expectation that the FDA will reject sotagliflozin in type 1 diabetes by its March 22 PDUFA date following a split AdCom vote in January. 2. Sun Life Financial (SLF) downgraded to Underperformer from Neutral at CIBC. 3. Yum China (YUMC) downgraded to Outperform from Buy at Daiwa with analyst Adrian Chan citing valuation but says long-term growth remains intact. 4. Line Corp. (LN) downgraded to Underperform from Neutral at Credit Suisse. 5. Nabors Industries (NBR) downgraded to Neutral from Buy at Citi with analyst Scott Gruber saying Nabors' free cash flow outlook is weighted towards the second half of 2019, with Q1 likely to be a cash burn of $40M-plus. This list is just a portion of The Fly's full analyst coverage. To see The Fly's full Street Research coverage, click here.