Here are three stocks added to the Zacks Rank #5 (Strong Sell) List today:ARMOUR Residential REIT (ARR) invests primarily in residential mortgage-backed securities issued or guaranteed by a United States Government-chartered entity. The Zacks Consensus Estimate for its current year earnings has been revised almost 18.6% downward over the last 60 days.3D Systems (DDD) is a leading provider of 3D content-to-print solutions including 3D printers, print materials, on-demand custom parts services and 3D authorin ...