In The Cabot Benjamin Graham Value Letter -- which assesses stocks based on Graham's value investing critera, editor J. Royden Ward takes a look at Wal-Mart Stores (NYSE: WMT).

"In this month's Classic Benjamin Graham Value Model, our calculation suggests that the Dow is overvalued at 12,370 and undervalued at 8,305; as such, today the market is extremely undervalued.

"This low-risk environment means it's probably a great time to add risk by dabbling in our recommended stocks such as Wal-Mart Stores.

"How cheap is it? The recent decline in WMT shares has created an outstanding buying opportunity for investors. WMT shares now sell at only 12.3 times forward EPS with a dividend yield of 2.0%.

"Stryker (NYSE: SYK) is a bargain at 15.1x next 12-month EPS," says J. Royden Ward, editor of The Cabot Benjamin Graham Value Letter, a service which focuses on stocks that would be well-suited to the investing strategy of Ben Graham, legendary value investor and mentor to Warren Buffett.

"Stryker develops, manufactures and sells specialty surgical and medical products. Its orthopedic division makes hip, knee and other implants.

"SYK also makes a wide variety of medical products and instruments ranging from hospital beds to medical video cameras, surgical drills and saws, and instruments for implants.