Alcon (ALC) faces cost pressure amid a challenging macroeconomic environment. Also, a tough competitive landscape is a threat. The stock carries a Zacks Rank #4 (Sell).Alcon is experiencing inflationary pressure in electronic components, freight, labor, resins and plastics, which impact the company’s margins. The company is also encountering supply chain challenges in certain components, including microchips, resins and plastics, metals and filters.Further, the ophthalmology industry is highly competitive a ...