This week, 4 Media stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

The rating of Saga Communications, Inc. Class A (SGA) moves up this week, rising from a C to a B. Saga Communications, Inc. Class A is a broadcast company mainly engaged in acquiring, developing and operating radio and television stations. For more information, get Portfolio Grader’s complete analysis of SGA stock.

This is a strong week for Markit Ltd. (MRKT). The company’s rating climbs to A from the previous week’s B. The company also gets A’s in operating margin growth, earnings growth, and free cash flow. For more information, get Portfolio Grader’s complete analysis of MRKT stock.

This week, TEGNA, Inc.’s (TGNA) ratings are up from a C last week to a B. The company also gets A’s in operating margin growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of TGNA stock.

Value Line, Inc. (VALU) improves from a C to a B rating this week. Value Line, Inc. produces investment-related periodical publications and provides investment management services. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of VALU 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.