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

MaxLinea (NYSE:MXL) is on the decline this week, earning a D (“sell”) after receiving a C (“hold”) last week. MaxLinear provides integrated, radio-frequency analog and mixed-signal semiconductor solutions for broadband communications applications. For Portfolio Grader’s specific subcategory of Equity, MXL also gets an F. For a full analysis of MXL stock, visit Portfolio Grader.

Kulicke & Soffa (NASDAQ:KLIC) experiences a ratings drop this week, going from last week’s C to a D. Kulicke & Soffa designs, manufactures, and markets capital equipment, related spare parts, and packaging materials used to assemble semiconductor devices. The stock also rates an F in Earnings Revisions. The stock price has fallen 8.9% over the past month, worse than the 0.8% decrease the Nasdaq has seen over the same period of time. To get an in-depth look at KLIC, get Portfolio Grader’s complete analysis of KLIC stock.

This week, NeoPhotonics Corp.’s (NYSE:NPTN) rating worsens to a D from the company’s C rating a week ago. NeoPhotonics designs, manufacturers, and markets standard and semi custom planar light wave circuits for metro access and other advanced optical communications platforms. The stock receives F’s in Earnings Revisions, Equity, Cash Flow, and Margin Growth. The stock price has fallen 12.9% over the past month. For more information, get Portfolio Grader’s complete analysis of NPTN stock.

ASM (NASDAQ:ASMI) is having a tough week. The company’s rating falls from C to a D. 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 receives F’s in Earnings Growth, Earnings Momentum, and Earnings Revisions. Earnings Surprise and Margin Growth also get F’s. The trailing PE Ratio for the stock is 41.50. To get an in-depth look at ASMI, get Portfolio Grader’s complete analysis of ASMI stock.

Skyworks Solution (NASDAQ:SWKS) earns a D this week, falling from last week’s grade of C. Skyworks Solutions is an innovator of analog and mixed-signal semiconductors. For more information, get Portfolio Grader’s complete analysis of SWKS stock.

Slipping from C to a D rating, RF Micro Devices (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. Share prices fell 9.8% over the past month. For a full analysis of RFMD stock, visit Portfolio Grader.

The rating of Silicon Laboratorie (NASDAQ:SLAB) slips from 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 gets an F in Earnings Momentum. The stock has a trailing PE Ratio of 28.80. To get an in-depth look at SLAB, get Portfolio Grader’s complete analysis of SLAB 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.