Eli Lilly stock has fallen in the days following the release of its latest earnings numbers.If you're investing in a stock with a high valuation, you know that expectations are going to be high when it's time for the company to report earnings. Any miss compared to analyst estimates or underwhelming guidance can quickly lead to a sell-off, analyst downgrades, and a much different outlook for the stock as a whole.Healthcare giant Eli Lilly (LLY -3.68%) has been trading at an inflated valuation for some time ...