In June 2014, AMETEK, Inc. (NYSE: AME) completed its acquisition of Zygo Corporation (NASDAQ: ZIGO) following approval from Zygo shareholders and the receipt of all regulatory approvals. Common stock of Zygo ceased trading. Zygo Corporation (Zygo) had been focused to ultra-high precision measurement solutions operating in two segments: Metrology Solutions Division and Optical Systems Division. Its Metrology Solutions Division manufactured products for technology companies. Its Optical Systems Division provided product development and manufacturing services for, defense, semiconductor, laser fusion research, life-sciences, and other industrial markets. The Metrology Solutions Division had manufacturing locations in Middlefield, Connecticut; Montreal Canada, and Shanghai, China. The Optical Systems Division had manufacturing locations in Middlefield, CT; Tucson, AZ; and Costa Mesa, CA.