This week, the overall grades of 3 Air Freight & Logistics stocks are lower, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Atlas Air Worldwide Holdings, Inc. (AAWW) declines this week from a C to a D. Atlas Air Worldwide Holdings, Inc. is engaged in leasing and outsourcing services for wide-body freighter aircraft. The company also gets F’s in operating margin growth, earnings growth, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of AAWW stock.

This is a rough week for XPO Logistics, Inc. (XPO). The company’s rating falls to D from the previous week’s C. XPO Logistics, Inc. provides third-party logistics services using a network of relationships with ground, sea, and air carriers in the United States, Mexico, and Canada. The company also gets F’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of XPO stock.

Park-Ohio Holdings Corp. (PKOH) is having a tough week. The company’s rating falls from a C to a D. Park-Ohio Holdings Corp. provides logistics services and manufactures engineered products. The company also gets F’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of PKOH 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.