5. Straumann Group (SWX:STMN): +73.2%
Based in Basel, Switzerland, the Straumann Group touts itself as a global leader in tooth replacement and orthodontic products and services. During the first nine months of 2017, the company saw 19% revenue growth, to CHF 801 million, with 15% organic growth and double-digit growth throughout its businesses. CEO Marco Gadola said in October that the company expects additional growth to come from key products that gained regulatory approvals in China, Brazil, Russia and India during the third quarter, as well as Straumann’s newest emerging market subsidiaries.
Over the summer, Straumann agreed to buy clear orthodontic corrective device maker ClearCorrect for $150 million. The company has also bought CADCAM software and scanning technology company Dental Wings for CAD 50m.