This week, the overall grades of three diversified utilities stocks are lower, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

TECO Energy, Inc.’s (TE) rating falls this week to an F (“strong sell”), down from last week’s 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. TE also rates an F in Portfolio Grader’s specific subcategory of Sales Growth. 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) experiences a ratings drop this week, going from last week’s C to a D. DTE Energy provides electricity and natural gas sales, distribution and storage services throughout southeastern Michigan. 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.