This week, the ratings of 4 Commercial Services & Supplies stocks on Portfolio Grader are down. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Slipping from a C to a D rating, Heritage-Crystal Clean, Inc. (HCCI) takes a hit this week. Heritage-Crystal Clean, Inc. offers parts cleaning services. The company also gets F’s in operating margin growth. For more information, get Portfolio Grader’s complete analysis of HCCI stock.

This is a rough week for Cypress Energy Partners LP (CELP). The company’s rating falls to D from the previous week’s C. The company also gets F’s in sales growth, earnings growth, earnings surprise, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of CELP stock.

AMREP Corporation (AXR) earns a F this week, moving down from last week’s grade of D. AMREP Corporation engages in real estate and media services businesses. The company also gets F’s in sales growth. For more information, get Portfolio Grader’s complete analysis of AXR stock.

Intersections Inc. (INTX) is having a tough week. The company’s rating falls from a C to a D. Intersections Inc. provides credit management and identity theft protection solutions to the consumer and small business markets on a subscription basis. The company also gets F’s in sales growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of INTX 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.