The grades of three Semiconductor stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

This week, FSI International (NASDAQ:FSII) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. FSI International is a supplier of processing equipment used at key production steps to manufacture microelectronics, including semiconductor devices and thin film heads. In Portfolio Grader’s specific subcategories of Earnings Growth, Earnings Momentum, and Sales Growth, FSII also gets A’s. For more information, get Portfolio Grader’s complete analysis of FSII stock.

This week, Taiwan Semiconductor Manufacturing (NYSE:TSM) pushes up from a B to an A rating. Taiwan Semiconductor Manufacturing makes semiconductors based on its own or third-party proprietary integrated circuit designs. For more information, get Portfolio Grader’s complete analysis of TSM stock.

ARM Holdings (NASDAQ:ARMH) gets a higher grade this week, advancing from a B last week to an A. ARM Holdings engages in the design of microprocessors, physical IP, and related technology and software; and sale of development tools to enhance the performance of high-volume embedded applications. The stock price has risen 5.7% over the past month, better than the 2.2% increase the Nasdaq has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of ARMH 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.