This week, seven 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 (KNOL) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). 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 (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.

This is a strong week for Liberty Global Plc Class C (LBTYK). The company’s rating climbs to B from the previous week’s C. Liberty Global owns interests in broadband, distribution, and content companies operating outside the continental United States, principally in Europe, Asia, and Latin America. For more information, get Portfolio Grader’s complete analysis of LBTYK stock.

Outdoor Channel Holdings (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.

Digital Generation, Inc. (DGIT) gets a higher grade this week, advancing from a C last week to a B. Digital Generation operates a nationwide network that links advertisers and advertising agencies with radio stations and television stations across the United States and Canada. For more information, get Portfolio Grader’s complete analysis of DGIT stock.

This week, Live Nation Entertainment, Inc. (LYV) pushes up from a B to an A rating. Live Nation Entertainment produces live concerts and sells tickets to those events over the Internet. For more information, get Portfolio Grader’s complete analysis of LYV stock.

This is a strong week for MDC Partners Inc. Class A (MDCA). The company’s rating climbs to A from the previous week’s B. MDC Partners provides advertising and specialized communication services to brands throughout the United States, Canada, and the United Kingdom. For more information, get Portfolio Grader’s complete analysis of MDCA 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.