Incyte Corp. Common Stock. Replay the stock market charts of INCY day by day back to 2003. Open long and short positions without spending any money. Incyte Corp is a biopharmaceutical company. It discovers, develops and commercializes proprietary therapeutics. Its product JAKAFI, a JAK1 and JAK2 inhibitor is used for treatment of patients with intermediate or high risk myelofibrosis.