This week, 3 Diversified Telecommunication Services stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

PT Telekomunikasi Indonesia (Persero) Tbk Sponsored ADR Class B (TLK) shows solid improvement this week. The company’s rating rises from a B to a A. PT Telekomunikasi Indonesia (Persero) Tbk Sponsored ADR Class B offers telecommunications services such as fixed-line, mobile, interconnection, network, data and Internet services. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of TLK stock.

General Communication, Inc. Class A (GNCMA) improves from a B to a A rating this week. General Communication, Inc. Class A is a diversified telecommunications provider with a position in facilities-based long distance service in the state of Alaska. The company also gets A’s in earnings growth, earnings surprise, earnings momentum, and return on equity. For more information, get Portfolio Grader’s complete analysis of GNCMA stock.

ORBCOMM Inc. (ORBC) earns a A this week, jumping up from last week’s grade of B. ORBCOMM Inc. operates low earth orbit satellites and ground infrastructure that enable customers to track, monitor, control, and communicate with fixed and mobile assets located anywhere in the world. The company also gets A’s in sales growth and earnings surprise. For more information, get Portfolio Grader’s complete analysis of ORBC 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.