New stock additions to the S&P500 (December 2025)
Last night U.S. time (5 Dec 2025), S&P Dow Jones Indices announced that three more companies will be added at the upcoming December rebalance: CRH plc (CRH) Carvana (CVNA) Comfort Systems USA (FIX) These are announced to join the S&P 500, with corresponding deletions and mid-cap/small-cap moves, but their inclusion becomes effective later in December (typical rebalance effective date is around the week of 19–22 Dec).