This week, the ratings of four Aerospace and Defense stocks on Portfolio Grader are down. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Moog Inc.‘s (NYSE:MOG.A) rating falls to a D (“sell”) this week, down from C (“hold”) the week prior. Moog manufactures precision motion control components and systems. To get an in-depth look at MOG.A, get Portfolio Grader’s complete analysis of MOG.A stock.

LMI Aerospace (NASDAQ:LMIA) earns a D this week, moving down from last week’s grade of C. LMI Aerospace fabricates, machines, finishes, and integrates formed, close tolerance aluminum and specialty alloy components for use by the aerospace industry. For a full analysis of LMIA stock, visit Portfolio Grader.

The rating of Astronics (NASDAQ:ATRO) declines this week from a C to a D. Astronics is a supplier of products to the aerospace and defense industries. The stock also gets an F in Earnings Surprise. For more information, get Portfolio Grader’s complete analysis of ATRO stock.

Embraer (NYSE:ERJ) ratings are on the decline this week as the company earns a F (“strong sell”). Last week, it received a D (“sell”). Embraer manufactures and markets commercial, corporate, and defense aircraft. The stock gets F’s in Earnings Momentum, Earnings Surprise, and Margin Growth. The trailing PE Ratio for the stock is 184.00. For a full analysis of ERJ stock, visit Portfolio Grader.

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.