Roth Capital upgrades Calix, Inc. (NYSE:CALX) to a "Buy" rating with a new price target of $85, indicating strong confidence in the company's future performance.Calix reports a 32% year-over-year increase in revenue, reaching over $265 million in the third quarter, significantly beating analyst expectations.The company's GAAP net profit improved dramatically to $15.7 million, showcasing a remarkable turnaround from a nearly $4 million loss in the same quarter the previous year.Calix, Inc. (NYSE:CALX) is a p ...