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

NVR, Inc. (NVR) earns a D this week, moving down from last week’s grade of C. NVR, Inc. builds and markets homes and conducts mortgage banking activities. The company also gets F’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of NVR stock.

This week, Helen of Troy Limited (HELE) drops from a C to a D rating. Helen of Troy Limited designs, produces, and markets brand-name hair dryers, curling irons, hair setters, women’s shavers, brushes, combs, hair accessories, mirrors, and comfort products. For more information, get Portfolio Grader’s complete analysis of HELE stock.

Hovnanian Enterprises, Inc. Class A (HOV) gets weaker ratings this week as last week’s C drops to a D. Hovnanian Enterprises, Inc. Class A designs, constructs, and markets single-family homes, townhomes, and condominiums in planned residential communities. The company also gets F’s in operating margin growth, earnings revisions, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of HOV stock.

Natuzzi S.p.A. Sponsored ADR (NTZ) experiences a ratings drop this week, going from last week’s C to a D. Natuzzi S.p.A. Sponsored ADR designs and manufactures furniture. For more information, get Portfolio Grader’s complete analysis of NTZ 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.