For the current week, the overall ratings of three Packaging stocks are worse, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

AptarGroup (NYSE:ATR) earns an F (“strong sell”) this week, moving down from last week’s grade of D (“sell”). AptarGroup is a global supplier of dispensing systems for the personal care, fragrance/cosmetic, pharmaceutical, household and food/beverage markets. To get an in-depth look at ATR, get Portfolio Grader’s complete analysis of ATR stock.

Slipping from a D to an F rating, Sealed Air Corp. (NYSE:SEE) takes a hit this week. Sealed Air is a global manufacturer of packaging materials and equipment systems used in a range of food, industrial, medical, and consumer applications. The stock receives F’s in Earnings Growth, Earnings Momentum, and Earnings Surprise. Cash Flow and Margin Growth also get F’s. For a full analysis of SEE stock, visit Portfolio Grader.

Sonoco’s (NYSE:SON) rating weakens this week, dropping to an F versus last week’s D. Sonoco Products manufactures industrial and consumer packaging products and a provides packaging services in 35 countries. The stock also gets an F in Earnings Surprise. For more information, get Portfolio Grader’s complete analysis of SON 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.