Here are five stocks added to the Zacks Rank #1 (Strong Buy) List today:James River Group Holdings, Ltd. (JRVR) : This specialty insurance company has seen the Zacks Consensus Estimate for its current year earnings increasing 10.5% over the last 60 days.Calix, Inc. (CALX) : This provider of cloud and software platforms has seen the Zacks Consensus Estimate for its current year earnings increasing 15.4% over the last 60 days.Materialise NV (MTLS) : This company that engages in the business of software, medic ...