This week, 4 Internet Software & Services stocks are worse, according to the Portfolio Graderdatabase. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Shutterstock, Inc. (SSTK) declines this week from a C to a D. For more information, get Portfolio Grader’s complete analysis of SSTK stock.

comScore, Inc. (SCOR) is having a tough week. The company’s rating falls from a C to a D. ComScore, Inc. offers a digital marketing intelligence platform that aids customers as they make business decisions and implement digital business strategies. For more information, get Portfolio Grader’s complete analysis of SCOR stock.

This is a rough week for New Relic, Inc. (NEWR). The company’s rating falls to D from the previous week’s C. The company also gets F’s in earnings surprise and return on equity. For more information, get Portfolio Grader’s complete analysis of NEWR stock.

Slipping from a C to a D rating, Pandora Media, Inc. (P) takes a hit this week. Pandora Media, Inc. offers radio stations available to stream on computers and mobile phones. The company also gets F’s in earnings growth, earnings revisions, earnings surprise, and return on equity. For more information, get Portfolio Grader’s complete analysis of P 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.