Eli Lilly ( LLY -6.59%) is the most valuable healthcare stock in the world, with a market capitalization of around $720 billion. For a while, it looked like it might be on track to be the first healthcare company to top a $1 trillion valuation, perhaps as early as this year.

Key Takeaways The S&P 500 added 0.1% on Tuesday, Jan. 14, as tame wholesale inflation data provided a positive signal ahead of Wednesday's consumer price report.Eli Lilly shares plunged after the pharma giant cut its sales guidance,

Eli Lilly’s expectations for sales in the fourth quarter of last year missed forecasts, driven by lower-than-expected sales of its diabetes and obesity drugs.