By John Reese, Validea

Our approach is to build portfolios based on the known investment criteria of a variety of "legendary" stock market investors with proven, long-term stock-picking strategies.

Based on these assessments, we've recently added four newcomers to our list of current favorites: Big Lots (BIG), CACI International (CACI), Coinstar (CSTR) and Northrop Grumman (NOC).

Big Lots offers brand-name closeout and bargain merchandise, including consumables, seasonal products, furniture, housewares, and toys. It operates more than 1,400 retail stores across 48 states, and has a $2.8 billion market cap.

Big Lots gets strong interest from my Peter Lynch and James O'Shaughnessy models.

CACI International, based in Arlington, Va., provides IT and professional services in the defense, intelligence, homeland security, and IT modernization and government transformation arenas.

The $1.6-billion-market-​cap company has taken in more than $3.7 billion in sales in the past year, and has more than 120 offices across North America and Western Europe.

CACI gets strong interest from my Martin Zweig, Joel Greenblatt and James O'Shaughnessy investment models.

Coinstar has a $1.7 billion market cap, and has a total of close to 50,000 kiosks. You may have seen this Washington-State-bas​ed company's kiosks in grocery stores and other retail shops.

Its automated coin-counting machines allow users to turn their spare change into cash or credit for a fee, while its automated redbox DVD kiosks let customers rent DVDs.

Coinstar gets strong interest from my Peter Lynch, Martin Zweig and James O'Shaughnessy models.

Northrop Grumman is one of the country's largest defense contractors. This Virginia-based company is involved in the aerospace, electronics, information systems and technical services arenas, serving government and commercial customers across the globe.

Its products include unmanned aircraft systems, B-2 stealth bombers, the James Webb space telescope, radar systems, 911 public safety systems, and cybersecurity solutions, to name just a few.

Grumman has a $15 billion market cap, and gets strong interest from my Peter Lynch, Joel Greenblatt and Kenneth Fisher models.

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