The grades of four computer and personal electronics stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

This week, Intevac, Inc. (IVAC) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. Intevac designs, manufactures, and sells complex capital equipment that is primarily used to manufacture data storage products and flat panel displays. In Portfolio Grader’s specific subcategory of Earnings Momentum, IVAC also gets an A. The stock price has risen 6.7% over the past month, better than the 1.3% decrease the Nasdaq has seen over the same period of time. Shares of the stock have been changing hands at an unusually rapid pace, four times the rate of the week prior. For more information, get Portfolio Grader’s complete analysis of IVAC stock.

Hewlett-Packard Company (HPQ) gets a higher grade this week, advancing from a B last week to an A. Hewlett-Packard provides imaging and printing systems, computing systems, and information technology services for business and home. The stock’s current price of $29.37 is approaching the 52-week high of $30.13. For more information, get Portfolio Grader’s complete analysis of HPQ stock.

Dot Hill Systems (HILL) is seeing ratings go up from a B last week to an A this week. Dot Hill Systems designs, manufactures, and markets a range of software and hardware storage systems for the entry and mid-range storage markets worldwide. Shares of the stock have been trading at an exceptionally rapid pace, up twofold from the week prior. For more information, get Portfolio Grader’s complete analysis of HILL stock.

This is a strong week for Astro-Med, Inc. (ALOT). The company’s rating climbs to A from the previous week’s B. Astro-Med designs, develops, manufactures, and distributes a range of specialty printers and data acquisition and analysis systems to the various markets, including aerospace, chemicals, food and beverage, life sciences and transportation. For more information, get Portfolio Grader’s complete analysis of ALOT 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.