For the current week, the overall ratings of eight Semiconductor stocks are worse, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Peregrine Semiconductor Corporation (NASDAQ:PSMI) earns an F (“strong sell”) this week, moving down from last week’s grade of D (“sell”). In Portfolio Grader’s specific subcategory of Earnings Momentum, PSMI also gets an F. The stock price has dropped 15.8% over the past month, worse than the 1.3% decrease the Nasdaq has seen over the same period of time. The stock currently has a trailing PE Ratio of 59.90. To get an in-depth look at PSMI, get Portfolio Grader’s complete analysis of PSMI stock.

Kulicke & Soffa Industries, Inc.’s (NASDAQ:KLIC) rating falls to a D (“sell”) this week, down from C (“hold”) the week prior. Kulicke & Soffa designs, manufactures, and markets capital equipment, related spare parts, and packaging materials used to assemble semiconductor devices. The stock also gets an F in Earnings Revisions. For more information, get Portfolio Grader’s complete analysis of KLIC stock.

NeoPhotonics Corporation (NYSE:NPTN) earns a D this week, moving down from last week’s grade of C. NeoPhotonics designs, manufacturers, and markets standard and semi custom planar light wave circuits for metro access and other advanced optical communications platforms. In Earnings Revisions, Equity, Cash Flow, and Margin Growth the stock gets F’s. For a full analysis of NPTN stock, visit Portfolio Grader.

This is a rough week for ASM International NV NY Registered Shs (NASDAQ:ASMI). The company’s rating falls to D from the previous week’s C. ASM is a semiconductor capital equipment supplier engaged in the design, manufacture, and sale of production systems and services for the production of semiconductor devices or integrated circuits. The stock gets F’s in Earnings Growth, Earnings Momentum, and Earnings Revisions. Earnings Surprise and Margin Growth also get F’s. For more information, get Portfolio Grader’s complete analysis of ASMI stock.

Skyworks Solutions, Inc. (NASDAQ:SWKS) is having a tough week. The company’s rating falls from a C to a D. Skyworks Solutions is an innovator of analog and mixed-signal semiconductors. For a full analysis of SWKS stock, visit Portfolio Grader.

Slipping from a C to a D rating, RF Micro Devices, Inc. (NASDAQ:RFMD) takes a hit this week. RF Micro Devices designs, develops, and markets proprietary radio frequency integrated circuits. The stock gets F’s in Equity and Margin Growth. To get an in-depth look at RFMD, get Portfolio Grader’s complete analysis of RFMD stock.

The rating of Silicon Laboratorie (NASDAQ:SLAB) declines this week from a C to a D. Silicon Laboratories designs and develops proprietary, analog-intensive and mixed-signal integrated circuits that can be used in a range of applications. The stock also rates an F in Earnings Momentum. The trailing PE Ratio for the stock is 28.70. For a full analysis of SLAB stock, visit Portfolio Grader.

MaxLinear, Inc. Class A (NYSE:MXL) earns a D this week, falling from last week’s grade of C. MaxLinear provides integrated, radio-frequency analog and mixed-signal semiconductor solutions for broadband communications applications. The stock also gets an F in Equity. To get an in-depth look at MXL, get Portfolio Grader’s complete analysis of MXL 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.