NEW YORK, Oct. 7, 2024 /PRNewswire/ -- DocuSign Inc. (NASD:DOCU) will replace MDU Resources Group Inc. (NYSE:MDU) in the S&P MidCap 400, and MDU Resources Group will replace Chuy's Holdings Inc. (NASD:CHUY) in the S&P SmallCap 600 effective prior to the opening of trading on Friday, October 11. S&P 500 constituent Darden Restaurants Inc. (NYSE: DRI) is acquiring Chuy's Holdings in a deal expected to be completed soon, pending final closing conditions. MDU Resources announced its intention to spin-off a comp ...