Terumo Corp.: +13%

Terumo Corp.: +13%

Like many medtech companies that are faring well in 2015, Terumo has a strong cardiovascular business, having acquired some of their assets in this area from 3M in 1999 and UK-based Vascutek Ltd in 2002. Since then, the company's share price has grown steadily for the most part, and the company has acquires a handful of other cardiovascular firms, including MicroVention Inc., the heart valve division of Kohler Chemine GmbH, and Onset Medical Corp. (Shown here is the company's 6 Fr GlideSheath catheter.)

Terumo also has a strong syringe business.

In 2014, the company made what was the biggest medtech acquisition by a Japanese firm, shelling out $2.6 billion for the U.S. firm CaridianBCT.