Casey's General Stores Set to Join S&P 500; DigitalOcean Holdings to Join S&P MidCap 400; Broadstone Net Lease to Join S&P SmallCap 600
S&P MidCap 400 constituent Casey's General Stores Inc. (NASD: CASY) will replace Hologic Inc. (NASD: HOLX) in the S&P 500, …