Why Eli Lilly Stock Flopped Today

Eli Lilly (LLY -4.58%) stock has had plenty of good trading sessions over the past year or so, but Monday's sure wasn't among them. The storied pharmaceutical company's shares lost nearly 5% of their value during the big market sell-off that day, and it wasn't only because of the general gloom. That drop compared rather unfavorably to the relatively light 2.7% swoon of the S&P 500 (^GSPC -2.70%).No, no, NovoThat negative investor reaction was directed at companies involved in the white-hot weight loss drug ...