U.S. large-cap biopharma stocks underperformed the broader market for two consecutive years due to political uncertainty and sector rotation. JP Morgan analysts remain positive on key players like Eli Lilly, Bristol-Myers Squibb, Merck & Co., Regeneron Pharmaceuticals, Gilead Sciences, and AbbVie Inc. Animal health stocks, including Zoetis Inc and IDEXX Laboratories, are also projected to rebound in 2025. Specialty pharmaceuticals showed early signs of stabilization in 2024.