Here are three stocks with buy ranks and strong growth characteristics for investors to consider today July 18th:Afya (AFYA) : This company which is a medical education group primarily in Brazil, carries a Zacks Rank #1(Strong Buy), and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 6.5% over the last 60 days.Afya has a PEG ratio of 0.48 compared with 1.65 for the industry. The company possesses a Growth Score of A.Daktronics (DAKT) : This company which is one of the wor ...