Three Aerospace and Defense stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

Goodrich (NYSE:GR) earns an A (“strong buy”) this week, jumping up from last week’s grade of B (“buy”). Goodrich supplies aerospace components, systems, and services to customers located worldwide. In Portfolio Grader’s specific subcategory of Equity, GR also gets an A. For more information, get Portfolio Grader’s complete analysis of GR stock.

Raytheon (NYSE:RTN) shows solid improvement this week. The company’s rating rises from a B to an A. Raytheon provides customers in defense, homeland security and other government markets with such products and services as electronics and mission systems integration. For more information, get Portfolio Grader’s complete analysis of RTN stock.

GenCorp (NYSE:GY) increases from a C (“hold”) to a B (“buy”) this week. GenCorp is a producer of value-added systems for the space electronics, aerospace, and defense industries. The stock price has risen 9.9% over the past month, better than the 0.5% increase the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of GY 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.