...AbbVie is a leading branded pharmaceutical company with good positions in several therapeutic areas. AbbVie benefits from the same high barriers to entry, good pricing power, strong profitability, and limited sensitivity to the business cycle as other rated Big Pharma peers. The company's scale (2021 revenue of $56 billion) and profitability (adjusted EBITDA margins of 51%) are greater than most peers. Conversely, its high product concentration (top product, Humira, representing 37% of revenue in 2021), geographic concentration (77% of revenue in the U.S.), and level of investment in research and development (R&D, 13% of revenue, compared to peers averaging about 19%) are weaknesses relative to peers. The company has a uniquely robust commercial presence, backing its dominant position in immunology, and the highest revenue-generating product in the industry, Humira ($20.7 billion in annual sales)....