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”).

Knology (NASDAQ:KNOL) is making headway this week, with the company’s rating improving to an A (“strong buy”) from a B (“buy”) last week. 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’s (NYSE:DEXO) grade is moving up to a B (“buy”) this week from last week’s C (“hold”). 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) shows solid improvement this week. The company’s rating rises from a C to a B. 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.

Charter Communications (NASDAQ:CHTR) earns a B this week, jumping up from last week’s grade of C. 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. 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.