Here are three stocks with buy ranks and strong growth characteristics for investors to consider today, May 6th:JD.com, Inc. (JD) : This supply chain-based technologies and services company carries a Zacks Rank #1, and has witnessed the Zacks Consensus Estimate for its next year earnings increasing nearly 3% over the last 60 days.JD.com has a PEG ratio of 0.24 compared with 0.55 for the industry. The company possesses a Growth Score  of A.Powell Industries, Inc. (POWL) : This custom-engineered equipment and ...