This week, 4 Metals & Mining stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Randgold Resources Limited Sponsored ADR (GOLD) is seeing ratings go up from a C last week to a B this week. Randgold Resources Limited Sponsored ADR explores for and mines gold in West and Central Africa. For more information, get Portfolio Grader’s complete analysis of GOLD stock.

Agnico-Eagle Mines Limited (AEM) boosts its rating from a C to a B this week. Agnico-Eagle Mines Limited produces, explores for, and develops gold. For more information, get Portfolio Grader’s complete analysis of AEM stock.

This week, MAG Silver Corp. (MVG) pushes up from a C to a B rating. MAG Silver Corp. acquires and explores mineral properties with a focus on high-grade silver and gold. For more information, get Portfolio Grader’s complete analysis of MVG stock.

This week, Klondex Mines Ltd.’s (KLDX) ratings are up from a B last week to a A. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of KLDX 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.