The overall ratings of three diversified utilities stocks are down on Portfolio Grader this week. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

TECO Energy, Inc. (TE) earns an F (“strong sell”) this week, moving down from last week’s grade of D (“sell”). TECO Energy is an energy-related holding company with businesses engaged in regulating electric and gas utility operations, coal mining, and unregulated electric generation. For Portfolio Grader’s specific subcategory of Sales Growth, TE also gets an F. Shares of the stock have been trading at an exceptionally rapid pace, up twofold from the week prior. To get an in-depth look at TE, get Portfolio Grader’s complete analysis of TE stock.

This week, Alliant Energy Corporation (LNT) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Alliant Energy provides regulated electricity and natural gas services to residential, commercial, and industrial customers in the Midwest region of the United States. The stock also gets an F in Cash Flow. For more information, get Portfolio Grader’s complete analysis of LNT stock.

DTE Energy Company (DTE) earns a D this week, moving down from last week’s grade of C. DTE Energy provides electricity and natural gas sales, distribution and storage services throughout southeastern Michigan. Shares of the stock have been exchanging at an usually rapid pace, twice the rate of the week prior. To get an in-depth look at DTE, get Portfolio Grader’s complete analysis of DTE 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.