Shots:  The Top 20 Radiopharma Companies of 2026, ranked by market capitalization, represent a powerful mix of global pharmaceutical leaders and agile innovators transforming radioligand therapies, alpha-emitters, and copper-based theranostics into pillars of modern oncology. What was once niche science is now redefining precision cancer care.  Flagship therapies such as Lutathera, Pluvicto, Pylarify, Illuccix/Gozellix, Xofigo,…