According to @StockMKTNewz, the S&P 500 announced its quarterly rebalance, adding Carvana (CVNA), Comfort Systems (FIX), and CRH (CRH) while removing LKQ (LKQ), Solstice (SOLS), and Mohawk Industries (MHK); the account notes the additions will occur before markets open, source: @StockMKTNewz on X, Dec 5, 2025. Index-tracking funds typically adjust holdings at the rebalance to replicate the benchmark, creating one-off buy and sell flows in added and deleted names, source: S&P Dow Jones Indices, S&P U.S. Indices Methodology. Historical research finds S&P 500 inclusions and deletions often coincide with short-term price impact and elevated turnover around the effective date, source: Harris and Gurel 1986 Journal of Finance; Chen, Norli, and Wermers 2004 Review of Financial Studies. For crypto traders, equity index events matter because crypto and US equities have shown stronger positive return correlations since 2020, so monitoring BTC and ETH around the rebalance window is common practice, source: International Monetary Fund 2022 blog Crypto Prices Move More in Sync with Stocks.