Here are three stocks with buy ranks and strong growth characteristics for investors to consider today, August 15th:Delek US Holdings DK: This company which isan independent refiner, transporter and marketer of petroleum products, carries a Zacks Rank #1,(Strong Buy) and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 62.3% over the last 60 days.Delek US Holdings, Inc. Price and Consensus Delek US Holdings, Inc. price-consensus-chart | Delek US Holdings, Inc. QuoteDelek US Holdings has a PEG ratio of 0.29 compared with 0.45 for the industry. The company possesses a Growth Score of A.Delek US Holdings, Inc. PEG Ratio (TTM) Delek US Holdings, Inc. peg-ratio-ttm | Delek US Holdings, Inc. QuoteEquinor EQNR: This Norway-based company which is one of the premier integrated energy companies in the world, with operations spreading across 30 countries, carries a Zacks Rank #1, and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 10.5% over the last 60 days.Equinor ASA Price and Consensus Equinor ASA price-consensus-chart | Equinor ASA QuoteEquinor has a PEG ratio of 0.13 compared with 0.45 for the industry. The company possesses a Growth Score of A.Equinor ASA PEG Ratio (TTM) Equinor ASA peg-ratio-ttm | Equinor ASA QuoteGreif GEF: This leading global producer of industrial packaging products and services with manufacturing facilities located in over 40 countries, carries a Zacks Rank #1, and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 0.4% over the last 60 days.Greif, Inc. Price and Consensus Greif, Inc. price-consensus-chart | Greif, Inc. QuoteGreif has a PEG ratio of 0.95 compared with 1.53 for the industry. The company possesses a Growth Score of A.Greif, Inc. PEG Ratio (TTM) Greif, Inc. peg-ratio-ttm | Greif, Inc. Quote See the full list of top ranked stocks here. Learn more about the Growth score and how it is calculated here. Zacks Names "Single Best Pick to Double" From thousands of stocks, 5 Zacks experts each have chosen their favorite to skyrocket +100% or more in months to come. From those 5, Director of Research Sheraz Mian hand-picks one to have the most explosive upside of all. It’s a little-known chemical company that’s up 65% over last year, yet still dirt cheap. With unrelenting demand, soaring 2022 earnings estimates, and $1.5 billion for repurchasing shares, retail investors could jump in at any time. This company could rival or surpass other recent Zacks’ Stocks Set to Double like Boston Beer Company which shot up +143.0% in little more than 9 months and NVIDIA which boomed +175.9% in one year.Free: See Our Top Stock and 4 Runners Up >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Delek US Holdings, Inc. (DK): Free Stock Analysis Report Greif, Inc. (GEF): Free Stock Analysis Report Equinor ASA (EQNR): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research