NEW YORK ( TheStreet) -- Shares of Vertex Pharmaceuticals (Nasdaq: VRTX) were gapping down Tuesday morning with an open price 22.7% lower than Friday's closing price. The stock closed at $64.85 Friday and opened today's trading at $50.14. The average volume for Vertex has been 3.4 million shares per day over the past 30 days. Vertex has a market cap of $13.69 billion and is part of the health care sector and drugs industry. Shares are up 95.3% year to date as of the close of trading on Friday. Vertex Pharmaceuticals Incorporated engages in discovering, developing, manufacturing, and commercializing small molecule drugs for the treatment of serious diseases worldwide. The company has a P/E ratio of 44.7, below the average drugs industry P/E ratio of 47.3 and above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Vertex as a hold. The company's strengths can be seen in multiple areas, such as its robust revenue growth, largely solid financial position with reasonable debt levels by most measures and notable return on equity. However, as a counter to these strengths, we find that the company's profit margins have been poor overall. You can view the full Vertex Ratings Report. Get more investment ideas from our investment research center.