Here are five stocks added to the Zacks Rank #1 (Strong Buy) List today:S&T Bancorp, Inc. STBA: This bank holding company for S&T Bank has seen the Zacks Consensus Estimate for its current year earnings increasing 9.1% over the last 60 days.S&T Bancorp, Inc. Price and Consensus S&T Bancorp, Inc. price-consensus-chart | S&T Bancorp, Inc. QuoteDouglas Dynamics, Inc. PLOW: This manufacturer and upfitter of commercial work truck attachments and equipment has seen the Zacks Consensus Estimate for its current year earnings increasing 11.7% over the last 60 days.Douglas Dynamics, Inc. Price and Consensus Douglas Dynamics, Inc. price-consensus-chart | Douglas Dynamics, Inc. QuoteDorian LPG Ltd. LPG: This company that engages in the transportation of liquefied petroleum gas has seen the Zacks Consensus Estimate for its current year earnings increasing 54.2% over the last 60 days.Dorian LPG Ltd. Price and Consensus Dorian LPG Ltd. price-consensus-chart | Dorian LPG Ltd. QuoteImpinj, Inc. PI: This company which operates a cloud connectivity platform has seen the Zacks Consensus Estimate for its current year earnings increasing nearly 55.2% over the last 60 days.Impinj, Inc. Price and Consensus Impinj, Inc. price-consensus-chart | Impinj, Inc. QuoteMarathon Petroleum Corporation MPC: This integrated downstream energy company has seen the Zacks Consensus Estimate for its current year earnings increasing 11.7% over the last 60 days.Marathon Petroleum Corporation Price and Consensus Marathon Petroleum Corporation price-consensus-chart | Marathon Petroleum Corporation Quote You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here. 7 Best Stocks for the Next 30 Days Just released: Experts distill 7 elite stocks from the current list of 220 Zacks Rank #1 Strong Buys. They deem these tickers "Most Likely for Early Price Pops." Since 1988, the full list has beaten the market more than 2X over with an average gain of +24.8% per year. So be sure to give these hand-picked 7 your immediate attention. See them now >>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 Marathon Petroleum Corporation (MPC): Free Stock Analysis Report Douglas Dynamics, Inc. (PLOW): Free Stock Analysis Report S&T Bancorp, Inc. (STBA): Free Stock Analysis Report Impinj, Inc. (PI): Free Stock Analysis Report Dorian LPG Ltd. (LPG): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research