Catch up on today's top five analyst downgrades with this list compiled by The Fly: 1. Clorox (CLX) downgraded to Hold from Buy at Argus with analyst John Staszak saying that while the company is benefiting from low-cost operations and strong market share, margin pressure and private-label competition pose obstacles to its growth. 2. Cosan (CZZ) downgraded to Neutral from Buy at UBS. 3. Inphi (IPHI) downgraded to Underperform from Neutral at BofA/Merrill with analyst Vivek Arya citing "materially worse" first quarter guidance led by persistent inventory issues in the coherent transimpedance amplifier/driver business in China. 4. Enanta (ENTA) downgraded to Neutral from Overweight at JPMorgan with analyst Jessica Fye saying she believes improved hepatitis C virus royalties and a lower U.S. tax rate are now reflected in the shares. 5. Allison Transmission (ALSN) downgraded to Neutral from Buy at BofA/Merrill with analyst Ross Gilardi saying he expects a strong fourth quarter driven by robust growth in its high margin spare parts business and a recovery in its Off-Highway segment but sees some risks to operating leverage next year due to business mix and higher R&D. 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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