Nidec Corporation (日本電産株式会社, Nihon Densan Kabushiki-gaisha) is a Japanese manufacturer of electric motors. Their products are found in hard-disk drives, electric appliances, automobiles and commercial and manufacturing equipment. The company has the largest global market share for the tiny spindle motors that power hard-disk drives. The two product groups with the largest sales are hard-disk drive motors and automotive products with 16% and 22% of sales, respectively. As of 2017, the company has 296 subsidiaries companies located across Japan, Asia, Europe and the Americas. Nidec is listed on the first section of the Tokyo Stock Exchange and is a constituent of the TOPIX 100 stock market index.