New Post Public Reply Private Reply Replies (0) Message Board ← Newer Older → DennyT Jul 4, 2016 at 11:14 AM MKSI Stock 42.58 Mks Instruments Inc $MKSI Hit a 52 week high of 43.15 Closing the day 07/01/16 at 42.58 -0.48 -1.11% With a day low of 42.49 and a total volume of 377,100. MKSI Newer Older