The grades of 13 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.

This is a strong week for ASML Holding NV ADR (ASML). The company’s rating climbs to B from the previous week’s C. ASML Holding NV ADR 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.

This week, NXP Semiconductors NV’s (NXPI) ratings are up from a C last week to a B. NXP Semiconductors NV provides mixed signal and standard product solutions for radio frequency (RF), analog, power management, interface, security, and digital processing products worldwide. The company also gets A’s in sales growth, operating margin growth, and free cash flow. For more information, get Portfolio Grader’s complete analysis of NXPI stock.

Cabot Microelectronics Corporation (CCMP) is seeing ratings go up from a B last week to a A this week. Cabot Microelectronics Corporation supplies high-performance polishing slurries used in the manufacture of advanced integrated circuit (IC) devices within the semiconductor industry. The company also gets A’s in earnings growth, earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of CCMP stock.

Qorvo, Inc. (QRVO) improves from a C to a B rating this week. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of QRVO stock.

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

The rating of Teradyne, Inc. (TER) moves up this week, rising from a C to a B. Teradyne, Inc. is a designer, manufacturer and global supplier of automatic systems and solutions used to test complex electronics. The company also gets A’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of TER stock.

PDF Solutions, Inc.’s (PDFS) ratings are looking better this week, moving up to a A from last week’s B. PDF Solutions, Inc. provides infrastructure technologies and services to optimize performance and improve yield of manufactured integrated circuits. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of PDFS stock.

Marvell Technology Group Ltd. (MRVL) boosts its rating from a B to a A this week. Marvell Technology Group Ltd. designs, develops, and markets integrated circuits for communications-related markets. The company also gets A’s in earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of MRVL stock.

Rambus Inc. (RMBS) gets a higher grade this week, advancing from a D last week to a B. Rambus Inc. is a technology licensing company and focuses on the design, development and licensing of chip interface technologies and architectures that are foundational to nearly all digital electronics products. The company also gets A’s in operating margin growth and free cash flow. For more information, get Portfolio Grader’s complete analysis of RMBS stock.

STMicroelectronics NV ADR RegS (STM) shows solid improvement this week. The company’s rating rises from a C to a B. STMicroelectronics NV ADR RegS is a designer, developer, manufacturer and marketer of semiconductor products. The company also gets A’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of STM stock.

This week, Exar Corporation (EXAR) pushes up from a B to a A rating. Exar Corporation designs, develops, and markets analog and mixed-signal integrated circuits for use in communications and video and imaging products. The company also gets A’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of EXAR stock.

Ultra Clean Holdings, Inc. (UCTT) improves from a B to a A rating this week. Ultra Clean Holdings, Inc. is a developer and supplier of critical subsystems, mainly for the semiconductor capital equipment industry. The company also gets A’s in earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of UCTT stock.

This week, Lattice Semiconductor Corporation’s (LSCC) ratings are up from a C last week to a B. Lattice Semiconductor Corporation designs, develops, and markets high speed programmable logic devices. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of LSCC 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.