From December 21, 2020, XRO will enter the S&P ASX50 index, as will Afterpay (APT). OSH & VCX are the two stocks moving out to make room for XRO and APT in the ASX50.
APT is also entering the ASX20 index (replacing IAG), which is a MAJOR milestone!
Other index inclusions and removals:
ASX100: In: IEL, MIN, REH. Out: ILU, FLT, NHF.
ASX200: In: KGN, REH. Out: AVH, COE, WSA
ASX All Technology Index: In: 3DP, 4DX, BID, DTC, FDV, FZO, HTG, LBY, MMM, OTW, TNT, WBT, YOJ. Out: RAP.
All of these changes will occur prior to trading on Monday December 21st, 2020. See here.