Here are three stocks added to the Zacks Rank #5 (Strong Sell) List today:Northern Technologies International (NTIC) develops and markets proprietary environmentally beneficial products and technical services either directly or via a network of joint ventures and independent distributors in over fifty countries. The Zacks Consensus Estimate for its current year earnings has been revised 25.6% downward over the last 60 days.Astronics (ATRO) is a manufacturer of specialized lighting and electronics for the co ...