North Chicago, Illinois-based AbbVie Inc. (ABBV) discovers, develops, manufactures, and sells pharmaceuticals worldwide. With a market cap of $405.6 billion, the company discovers and develops medicines and therapies that solve health issues across immunology, oncology, aesthetics, neuroscience, and eye care. Companies worth$200 billion or more are generally described as “mega-cap stocks,” and ABBV definitely fits that description, with its market cap exceeding this threshold, reflecting its substantial ...