For the current week, the overall ratings of three Computer and Personal Electronics stocks are worse, according to thePortfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This week, Datalink (NASDAQ:DTLK) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Datalink analyzes, designs, implements, and supports information storage infrastructure that store, protect, and provide continuous access to information. To get an in-depth look at DTLK, get Portfolio Grader’s complete analysis of DTLK stock.

STEC Inc.‘s (NASDAQ:STEC) rating falls this week to an F (“strong sell”), down from last week’s D (“sell”). STEC provides technology solutions, offering products based on dynamic random access memory, static random access memory, and Flash memory technologies. As of Sept. 7, 14.8% of outstanding STEC Inc. shares were held short. For more information, get Portfolio Grader’s complete analysis of STEC stock.

This is a rough week for Dell (NASDAQ:DELL). The company’s rating falls to F from the previous week’s D. Dell produces a range of personal electronic items, such as desktop PCs, software and peripherals, servers, and storage. The stock price has fallen 10.9% over the past month, worse than the 4.9% increase the Nasdaq has seen over the same period of time. To get an in-depth look at DELL, get Portfolio Grader’s complete analysis of DELL 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.