NEW YORK, March 25, 2022 /PRNewswire/ — S&P Dow Jones Indices will make the adhering to improvements to the S&P MidCap 400 and S&P SmallCap 600: S&P SmallCap 600 constituent Chart Industries Inc. (NYSE: GTLS) will switch CyrusOne Inc. (NASD: CONE) in the S&P MidCap 400, and Sonos Inc. (NASD: […]