This week, four Media stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

This week, Knology (NASDAQ:KNOL) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. Knology is a fully integrated provider of video, voice and advanced communications services to residential customers in the southeastern United States. In Portfolio Grader’s specific subcategories of Equity and Margin Growth, KNOL also gets A’s. For more information, get Portfolio Grader’s complete analysis of KNOL stock.

Dex One (NYSE:DEXO) is making progress this week as its rating of C (“hold”) from last week increases to a B (“buy”) rating this week. Dex One is a marketing solutions company that offers various solutions to promote businesses on the Internet through its proprietary search engine marketing product, DexNet. For more information, get Portfolio Grader’s complete analysis of DEXO stock.

Outdoor Channel Holdings (NASDAQ:OUTD) improves from a C to a B rating this week. Outdoor Channel Holdings is the principal owner of The Outdoor Channel, a national television network. For more information, get Portfolio Grader’s complete analysis of OUTD stock.

The rating of Charter Communications (NASDAQ:CHTR) moves up this week, rising from a C to a B. Charter Communications is a provider of traditional cable video programming (basic and digital video), high-speed Internet services, and telephone services for residential and commercial customers. The stock price has risen 9.4% over the past month, better than the 9.1% increase the Nasdaq has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of CHTR 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.