The overall ratings of 4 Road & Rail stocks are down on Portfolio Grader this week. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This is a rough week for Knight Transportation, Inc. (KNX). The company’s rating falls to D from the previous week’s C. Knight Transportation, Inc. is a short-to-medium haul, dry van truckload carrier. For more information, get Portfolio Grader’s complete analysis of KNX stock.

Werner Enterprises, Inc. (WERN) is having a tough week. The company’s rating falls from a D to a F. Werner Enterprises, Inc. is a transportation and logistics company, which is engaged mainly in hauling truckload shipments of general commodities in both interstate and intrastate commerce. The company also gets F’s in earnings revisions, earnings surprise, and free cash flow. For more information, get Portfolio Grader’s complete analysis of WERN stock.

USA Truck, Inc. (USAK) slips from a D to a F this week. USA Truck, Inc. is a medium haul, common, and contract carrier specializing in truckload quantities of general commodities. The company also gets F’s in sales growth, operating margin growth, earnings growth, earnings revisions, earnings surprise, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of USAK stock.

eHi Car Services Ltd. Sponsored ADR Class A (EHIC) declines this week from a C to a D. The company also gets F’s in operating margin growth, earnings growth, earnings revisions, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of EHIC 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.