What: Shares of the drugmaker Perrigo Company plc (NYSE: PRGO) fell by more than 10% today on exceptionally high volume after the company released its second-quarter earnings report that missed analysts expectations for quarterly earnings per share. Specifically, Perrigo reported adjusted diluted earnings per share of $1.93 for the three-month period, missing the Street's consensus figure by $0.05. While Perrigo did top consensus for its revenue in the second quarter by $50 million, this silver lining was offset by the company issuing yet another hefty downward revision for its 2016 annual guidance.