The overall ratings of four Pharmaceutical stocks are down on Portfolio Grader this week. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Warner Chilcott (NASDAQ:WCRX) is on the decline this week, earning a D (“sell”) after receiving a C (“hold”) last week. Warner Chilcott engages in the development, manufacture, and promotion of branded pharmaceutical products focusing on the women’s healthcare, gastroenterology, dermatology, and urology markets in North America and western Europe. Shares of the company are down 1.5% since last month, worse than the Nasdaq’s 5.7% increase for the same period. To get an in-depth look at WCRX, get Portfolio Grader’s complete analysis of WCRX stock.

Shire PLC ADR (NASDAQ:SHPG) gets weaker ratings this week as last week’s C drops to a D. For a full analysis of SHPG stock, visit Portfolio Grader.

Sagent Pharmaceuticals (NASDAQ:SGNT) earns an F (“strong sell”) this week, moving down from last week’s grade of D (“sell”). Sagent Holding Co is an injectable pharmaceutical company that develops and sources products which they sell primarily in the United States. The stock gets F’s in Earnings Revisions and Equity. The stock price has fallen 25.1% over the past month. To get an in-depth look at SGNT, get Portfolio Grader’s complete analysis of SGNT stock.

Pernix Therapeutics Holdings (AMEX:PTX) is having a tough week. The company’s rating falls from a C to a D rating. Pernix Therapeutics Holdings acquires, develops, and markets medications for the pediatric market. The stock gets F’s in Earnings Momentum and Earnings Revisions. Over the last month, the price of PTX has dropped 14.6%. For more information, get Portfolio Grader’s complete analysis of PTX stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.