MKS Instruments, Inc. announced earnings results for the fourth quarter ended December 31, 2018. For the fourth quarter, the company announced total revenue was USD 460.541 million compared to USD 511.800 million a year ago. Operating income was USD 94.084 million compared to USD 120.016 million a year ago. Net income was USD 71.636 million compared to USD 77.638 million a year ago. Basic earnings per share was USD 1.33 compared to USD 1.43 a year ago. Diluted earnings per share was USD 1.32 compared to USD 1.41 a year ago. For the full year, total revenue was USD 2,075.108 million compared to USD 1,915.977 million a year ago. Operating income was USD 494.059 million compared to USD 406.634 million a year ago. Net income was USD 392.896 million compared to USD 339.132 million a year ago. Basic earnings per share was USD 7.22 compared to USD 6.26 a year ago. Diluted earnings per share was USD 7.14 compared to USD 6.16 a year ago.