Five semiconductor 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”).

This week, M/A-COM Technology Solutions Holdings, Inc. (MTSI) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). M/A-COM Technology Solutions designs, develops, manufactures, and markets semiconductors and modules for use in wireless and wireline applications across the radio frequency, microwave, and millimeterwave spectrum. In Portfolio Grader’s specific subcategories of Earnings Momentum, Earnings Revisions and Sales Growth, MTSI also gets A’s. For more information, get Portfolio Grader’s complete analysis of MTSI stock.

FSI International’s (FSII) ratings are looking better this week, moving up to an A from last week’s B. 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.

CVD Equipment Corporation (CVV) ups its rating to a B (“buy”) this week after earning a C (“hold”) in the week before. CVD Equipment develops, manufactures, and markets chemical vapor deposition equipment, annealing furnaces, and etching systems. For more information, get Portfolio Grader’s complete analysis of CVV stock.

This week, FormFactor, Inc. (FORM) pushes up from a C to a B rating. FormFactor designs, develops, and manufactures advanced semiconductor wafer probe cards. For more information, get Portfolio Grader’s complete analysis of FORM stock.

This is a strong week for Semiconductor Manufacturing International Corp. Sponsored ADR (SMI). The company’s rating climbs to B from the previous week’s C. Semiconductor Manufacturing International manufactures, trades, packages, tests, and provides computer-aided design integrated circuits. Shares of the stock have been changing hands at an unusually rapid pace, up 1003.6% from the week prior. For more information, get Portfolio Grader’s complete analysis of SMI 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.