Why Is Apellis Pharmaceuticals (APLS) Down 17.3% Since Last Earnings Report?

It has been about a month since the last earnings report for Apellis Pharmaceuticals, Inc. (APLS) . Shares have lost about 17.3% in that time frame, underperforming the S&P 500.But investors have to be wondering, will the recent negative trend continue leading up to its next earnings release, or is Apellis Pharmaceuticals due for a breakout? Before we dive into how investors and analysts have reacted as of late, let's take a quick look at its latest earnings report in order to get a better handle on the imp ...