A sign with the company logo outside the headquarters of Eli Lilly and Company in Indianapolis, Indiana, March 17, 2024.A version of this article first appeared in CNBC's Healthy Returns newsletter, which brings the latest health-care news straight to your inbox. Subscribe here to receive future editions.Earlier this month, Berkshire Hathaway topped $1 trillion in market value, the first non-tech company in the U.S. to do so. Soon, pharmaceutical giant Eli Lilly could become the first health-care company to ...