Higher Input Costs, Weak Demand Ail Eastman Chemical (EMN) According to the Zacks analyst, Eastman Chemical faces headwinds from raw material cost inflation. Also, weak demand for its specialty products in China remains a concern. Single Supplier for Captisol a Concern for Ligand (LGND) Per the Zacks analyst, Ligand's dependence on a single supplier for its major revenue generating technology, Captisol, is a concern as any supply interruption will adversely effect Ligand's results. Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days.