 HARVEY, Ill.--BUSINESS WIRE--Atkore International Group Inc. the Company or Atkore NYSE: ATKR announced earnings for its fiscal 2021 first quarter ended December 25, 2020 and plans to change its name to Atkore Inc. Atkore started fiscal year 2021 with another record quarter driven by strong performance across our businesses. In particular, we had better-than-expected results in our PVC electrical conduit business where we met increasing market demand amidst industry supply constraint 