Prominent players in the biotech sector include large, well-established companies such as Amgen, Gilead Sciences, and Biogen, which have multiple products on the market and solid research pipelines. Younger companies like Moderna and Regeneron are also notable, especially for their roles in developing treatments and vaccines at an accelerated pace in response to global health crises. These companies represent a mix of stable investments and high-growth potentials within the biotech industry.