The grades of four Semiconductor stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Intermolecular Inc. (NASDAQ:IMI) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. Intermolecular, Inc. is a semiconductor and clean energy technology platform company. It develops proprietary technology and intellectual property for customers focused on advanced materials, processes, integrations and device architectures through paid collaborative development programs with its cu… For more information, get Portfolio Grader’s complete analysis of IMI stock.

This week, FSI International (NASDAQ:FSII) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). FSI International is a supplier of processing equipment used at key production steps to manufacture microelectronics, including semiconductor devices and thin film heads. For more information, get Portfolio Grader’s complete analysis of FSII stock.

RDA Microelectronics (NASDAQ:RDA) earns a B this week, jumping up from last week’s grade of C. RDA Microelectronics designs, and outsources the manufacture of, semiconductors. The stock currently has a trailing PE Ratio of 9.80. For more information, get Portfolio Grader’s complete analysis of RDA stock.

Advanced Energy Industries (NASDAQ:AEIS) shows solid improvement this week. The company’s rating rises from a C to a B. Advanced Energy Industries are engaged in the design, manufacturing, sale and support of industrial power conversion products that transform power into various usable forms. For more information, get Portfolio Grader’s complete analysis of AEIS 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.