This week, three Semiconductor stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

FSI International (NASDAQ:FSII) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. 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.

Taiwan Semiconductor Manufacturing (NYSE:TSM) is seeing ratings go up from a B last week to an A this week. Taiwan Semiconductor Manufacturing makes semiconductors based on its own or third-party proprietary integrated circuit designs. Shares of TSM have increased 12.5% over the past month, better than the 1.7% increase the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of TSM stock.

Himax Technologies (NASDAQ:HIMX) shows solid improvement this week. The company’s rating rises from a B to an A. Himax Technologies designs and manufactures integrated circuits. Investors seem to agree with the upgraded status of the stock, and have pushed the stock up 5.5% over the past month. For more information, get Portfolio Grader’s complete analysis of HIMX 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.