The grades of five 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.

FSI International (FSII) is making headway this week, with the company’s rating improving to an A (“strong buy”) from a B (“buy”) last 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.

Amtech Systems, Inc. (ASYS) is making progress this week as its rating of C (“hold”) from last week increases to a B (“buy”) rating this week. Amtech engages in the design, assembly, sale, and installation of capital equipment and related consumables used in the manufacture of wafers, primarily for the solar and semiconductor industries. For more information, get Portfolio Grader’s complete analysis of ASYS stock.

CVD Equipment Corporation (CVV) is seeing ratings go up from a C last week to a B this week. 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 is a strong week for ASML Holding NV NY Registered Shs (ASML). The company’s rating climbs to B from the previous week’s C. ASML engages in designing, manufacturing, marketing, and servicing semiconductor processing equipment used in the fabrication of integrated circuits. For more information, get Portfolio Grader’s complete analysis of ASML stock.

Microsemi Corporation (MSCC) earns a B this week, jumping up from last week’s grade of C. Microsemi designs, manufactures, and markets high-performance analog and mixed-signal integrated circuits and high-reliability semiconductors. For more information, get Portfolio Grader’s complete analysis of MSCC 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.