Here are three stocks added to the Zacks Rank #5 (Strong Sell) List today: Ducommun (DCO) manufactures components and assemblies principally for domestic and foreign commercial and military aircraft and space programs. The Zacks Consensus Estimate for its current year earnings has been revised 9.8% downward over the last 60 days. Byline Bancorp (BY) operates as a bank holding company serving small- and medium-sized businesses, financial sponsors and consumers. The Zacks Consensus Estimate for its current ye ...