Here are four stocks with buy ranks and strong growth characteristics for investors to consider today, September 17th:Westlake Chemical Corporation WLK: This vertically integrated international manufacturer and supplier of petrochemicals, polymers and fabricated products carries a Zacks Rank #1 (Strong Buy) and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 12.3% over the last 60 days. Westlake Chemical Corporation Price and Consensus Westlake Chemical Corporation price-consensus-chart | Westlake Chemical Corporation Quote Westlake Chemical has a PEG ratio of 0.14, compared with 0.31 for the industry. The company possesses a Growth Score of B. Westlake Chemical Corporation PEG Ratio (TTM) Westlake Chemical Corporation peg-ratio-ttm | Westlake Chemical Corporation Quote Columbia Sportswear Company COLM: This global leader in design, sourcing, marketing and distribution of active outdoor apparel and footwear carries a Zacks Rank #1 and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 6.2% over the last 60 days. Columbia Sportswear Company Price and Consensus Columbia Sportswear Company price-consensus-chart | Columbia Sportswear Company Quote Columbia Sportswear has a PEG ratio of 0.65, compared with 0.98 for the industry. The company possesses a Growth Score of B. Columbia Sportswear Company PEG Ratio (TTM) Columbia Sportswear Company peg-ratio-ttm | Columbia Sportswear Company Quote The Hackett Group, Inc. HCKT: This company that operates as a strategic advisory and technology consulting firm carries a Zacks Rank #1 and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 9.9% over the last 60 days. The Hackett Group, Inc. Price and Consensus The Hackett Group, Inc. price-consensus-chart | The Hackett Group, Inc. Quote The Hackett Group has a PEG ratio of 1.05, compared with 2.34 for the industry. The company possesses a Growth Score of A. The Hackett Group, Inc. PEG Ratio (TTM) The Hackett Group, Inc. peg-ratio-ttm | The Hackett Group, Inc. Quote CRA International, Inc. CRAI: This consulting company that provides economic, financial and management consulting services carries a Zacks Rank #1 and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 18.1% over the last 60 days. CRA International, Inc. Price and Consensus CRA International, Inc. price-consensus-chart | CRA International, Inc. Quote CRA International has a PEG ratio of 1.19, compared with 2.34 for the industry. The company possesses a Growth Score of A. CRA International, Inc. PEG Ratio (TTM) CRA International, Inc. peg-ratio-ttm | CRA International, Inc. Quote See the full list of top ranked stocks here.Learn more about the Growth score and how it is calculated here. 5 Stocks Set to Double Each was handpicked by a Zacks expert as the #1 favorite stock to gain +100% or more in 2021. Previous recommendations have soared +143.0%, +175.9%, +498.3% and +673.0%. Most of the stocks in this report are flying under Wall Street radar, which provides a great opportunity to get in on the ground floor.Today, See These 5 Potential Home Runs >>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 Westlake Chemical Corporation (WLK): Free Stock Analysis Report Charles River Associates (CRAI): Free Stock Analysis Report Columbia Sportswear Company (COLM): Free Stock Analysis Report The Hackett Group, Inc. (HCKT): Free Stock Analysis Report To read this article on Zacks.com click here.