Here are 5 stocks added to the Zacks Rank #1 (Strong Buy) List today:Acme United Corporation (ACU): This company that supplies cutting, measuring, first aid, and sharpening products has seen the Zacks Consensus Estimate for its current year earnings increasing 0.7% over the last 60 days.Acme United Corporation. Price and Consensus Acme United Corporation. price-consensus-chart | Acme United Corporation. QuoteBarrett Business Services, Inc.(BBSI): This company that provides business management solutions has seen the Zacks Consensus Estimate for its current year earnings increasing 1.7% over the last 60 days.Barrett Business Services, Inc. Price and Consensus Barrett Business Services, Inc. price-consensus-chart | Barrett Business Services, Inc. QuoteDonegal Group Inc. (DGICA): This insurance holding company has seen the Zacks Consensus Estimate for its current year earnings increasing 27.3% over the last 60 days.Donegal Group, Inc. Price and Consensus Donegal Group, Inc. price-consensus-chart | Donegal Group, Inc. QuoteFair Isaac Corporation (FICO): This company that develops analytic, software, and data management products and services has seen the Zacks Consensus Estimate for its current year earnings increasing 1.9% over the last 60 days.Fair Isaac Corporation Price and Consensus Fair Isaac Corporation price-consensus-chart | Fair Isaac Corporation QuoteGreat Lakes Dredge & Dock Corporation (GLDD): This company that provides dredging services has seen the Zacks Consensus Estimate for its current year earnings increasing 47.8% over the last 60 days.Great Lakes Dredge & Dock Corporation Price and Consensus Great Lakes Dredge & Dock Corporation price-consensus-chart | Great Lakes Dredge & Dock Corporation QuoteYou can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks hereToday's Best Stocks from Zacks Would you like to see the updated picks from our best market-beating strategies? From 2017 through 2018, while the S&P 500 gained +15.8%, five of our screens returned +38.0%, +61.3%, +61.6%, +68.1%, and +98.3%.This outperformance has not just been a recent phenomenon. From 2000 – 2018, while the S&P averaged +4.8% per year, our top strategies averaged up to +56.2% per year.See their latest picks free >>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 Great Lakes Dredge & Dock Corporation (GLDD): Free Stock Analysis Report Fair Isaac Corporation (FICO): Free Stock Analysis Report Donegal Group, Inc. (DGICA): Free Stock Analysis Report Barrett Business Services, Inc. (BBSI): Free Stock Analysis Report Acme United Corporation. (ACU): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research