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

Royal Gold, Inc. (RGLD) earns a B this week, jumping up from last week’s grade of C. Royal Gold, Inc. acquires and manages gold, silver, copper, lead and zinc royalties. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of RGLD stock.

Newmont Mining Corporation (NEM) shows solid improvement this week. The company’s rating rises from a B to a A. Newmont Mining Corporation acquires, explores and develops mineral properties. The company also gets A’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of NEM stock.

This week, Teck Resources Limited Class B’s (TCK) ratings are up from a C last week to a B. Teck Resources Limited Class B engages in exploring for, acquiring, developing, and producing natural resources in the Americas, Asia Pacific, Europe, and Africa. For more information, get Portfolio Grader’s complete analysis of TCK stock.

This is a strong week for Avino Silver & Gold Mines Ltd. (ASM). The company’s rating climbs to B from the previous week’s C. Avino Silver & Gold Mines Ltd. engages in the acquisition, exploration, and development of mineral properties in Canada and Mexico. For more information, get Portfolio Grader’s complete analysis of ASM 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.