Perrigo Company plc is an Irish–registered manufacturer of private label over-the-counter pharmaceuticals, and while 70% of Perrigo's net sales are from the U.S. healthcare system, Perrigo is legally headquartered in Ireland for tax purposes. The company's shares are traded on the NYSE and the Tel Aviv Stock Exchange; as of 2015, its largest shareholders are the Vanguard Group and BlackRock. Perrigo is the only non-Israeli company listed on the Tel Aviv 100 Index. The company produces a wide variety of products, including generic drugs, infant formulas, and nutritional products. Perrigo is headquartered in Grand Rapids, Michigan.