This week, the ratings of 5 Metals & Mining stocks on Portfolio Grader are down. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Reliance Steel & Aluminum Co. (RS) declines this week from a C to a D. Reliance Steel & Aluminum Co. operates as a metals service center company in North America. For more information, get Portfolio Grader’s complete analysis of RS stock.

This week, Tahoe Resources Inc. (TAHO) drops from a D to a F rating. Tahoe Resources Inc. acquires, explores and develops resource properties in the Americas for the mining of precious metals, primarily silver. The company also gets F’s in earnings growth and earnings momentum. For more information, get Portfolio Grader’s complete analysis of TAHO stock.

Aluminum Corporation of China Limited Sponsored ADR Class H (ACH) is having a tough week. The company’s rating falls from a C to a D. Aluminum Corporation of China Limited Sponsored ADR Class H is a producer of aluminium, with operations in bauxite mining, alumina refining, primary aluminium smelting, and aluminium fabrication. The company also gets F’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of ACH stock.

Coeur Mining, Inc.’s (CDE) rating weakens this week, dropping to a D versus last week’s C. Coeur Mining, Inc. explores, develops, operates, and/or owns silver and gold mining properties and companies. The company also gets F’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of CDE stock.

Endeavour Silver Corp. (EXK) slips from a D to a F this week. Endeavour Silver Corp. is a small-cap silver mining company focused on the growth of its silver production, reserves and resources in Mexico. 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 EXK 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.