The grades of 12 Semiconductors & Semiconductor Equipment 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.

Monolithic Power Systems, Inc. (MPWR) shows solid improvement this week. The company’s rating rises from a B to a A. Monolithic Power Systems, Inc. is a high performance analog and mixed-signal semiconductor company. For more information, get Portfolio Grader’s complete analysis of MPWR stock.

This week, Analog Devices, Inc.’s (ADI) ratings are up from a C last week to a B. Analog Devices, Inc. is engaged in the design, manufacture and marketing of high-performance analog, mixed-signal and digital signal processing integrated circuits used in industrial, communication, computer and consumer applications. The company also gets A’s in earnings surprise and return on equity. For more information, get Portfolio Grader’s complete analysis of ADI stock.

This week, Silicon Laboratories Inc. (SLAB) pushes up from a C to a B rating. Silicon Laboratories Inc. designs and develops proprietary, analog-intensive and mixed-signal integrated circuits that can be used in a range of applications. The company also gets A’s in earnings growth and earnings revisions. For more information, get Portfolio Grader’s complete analysis of SLAB stock.

Maxim Integrated Products, Inc. (MXIM) earns a B this week, jumping up from last week’s grade of C. Maxim Integrated Products, Inc. designs, develops, manufactures, and markets a broad range of linear and mixed-signal integrated circuits. For more information, get Portfolio Grader’s complete analysis of MXIM stock.

OmniVision Technologies, Inc. (OVTI) boosts its rating from a C to a B this week. OmniVision Technologies, Inc. provides integrated single chip semiconductor imaging devices. The company also gets A’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of OVTI stock.

The rating of Silicon Motion Technology Corporation Sponsored ADR (SIMO) moves up this week, rising from a B to a A. Silicon Motion Technology Corporation Sponsored ADR is a semiconductor company that designs, develops, and markets semiconductor products for the multimedia consumer electronics market. The company also gets A’s in sales growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of SIMO stock.

This is a strong week for Inphi Corporation (IPHI). The company’s rating climbs to A from the previous week’s B. Inphi Corporation provides high-speed analog and mixed signal semiconductor solutions for the communications, datacenter, and computing markets worldwide. The company also gets A’s in sales growth and earnings momentum. For more information, get Portfolio Grader’s complete analysis of IPHI stock.

Cohu, Inc. (COHU) is seeing ratings go up from a C last week to a B this week. Cohu, Inc. develops, manufactures, markets, sells, and services test handling and burn-in related equipment and thermal sub-systems for the global semiconductor industry. The company also gets A’s in operating margin growth, earnings revisions, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of COHU stock.

Global-Tech Advanced Innovations Inc. (GAI) improves from a B to a A rating this week. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of GAI stock.

Sigma Designs, Inc. (SIGM) gets a higher grade this week, advancing from a C last week to a B. Sigma Designs, Inc. provides integrated system-on-chip solutions for the internet protocol television, connected media player, prosumer and industrial audio/video, connected home technologies and other markets. The company also gets A’s in earnings surprise, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of SIGM stock.

inTEST Corporation’s (INTT) ratings are looking better this week, moving up to a B from last week’s C. InTEST Corporation is an independent designer, manufacturer and marketer of manipulator and docking hardware products, temperature management systems and tester interface products that are used by semiconductor manufacturers in conjunction with automatic test equipment in the testing of integrated circuits. For more information, get Portfolio Grader’s complete analysis of INTT stock.

This week, Axcelis Technologies, Inc.’s (ACLS) ratings are up from a C last week to a B. Axcelis Technologies, Inc. designs, manufactures and services ion implantation, dry strip and other processing equipment used in the fabrication of semiconductor chips in the United States, Europe and Asia. The company also gets A’s in sales growth and earnings surprise. For more information, get Portfolio Grader’s complete analysis of ACLS 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.