Here are three stocks with buy ranks and strong growth characteristics for investors to consider today, October 16th:Okta, Inc. (OKTA) : This identity solutions company carries a Zacks Rank #1, and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 8.8% over the last 60 days.Okta has a PEG ratio of 1.30 compared with 3.27 for the industry. The company possesses a Growth Score  of B.JD.com (JD) : This company which operates as an online direct sales company in China carries a ...