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

The rating of USA Compression Partners LP (USAC) moves up this week, rising from a C to a B. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of USAC stock.

This week, RPC, Inc.’s (RES) ratings are up from a B last week to a A. RPC, Inc. provides specialized oilfield services and equipment to independent and major oilfield companies. The company also gets A’s in earnings revisions and earnings momentum. For more information, get Portfolio Grader’s complete analysis of RES stock.

Transocean Partners LLC (RIGP) improves from a C to a B rating this week. The company also gets A’s in earnings momentum and return on equity. For more information, get Portfolio Grader’s complete analysis of RIGP stock.

Precision Drilling Corporation (PDS) earns a B this week, jumping up from last week’s grade of C. Precision Drilling Corporation is an integrated oilfield drilling and energy service company providing services to the oil and gas industry. The company also gets A’s in earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of PDS 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.