According to StockMKTNewz, UnitedHealth ($UNH) shares fell more than 5% in after-hours trading following recent news affecting the healthcare giant (source: StockMKTNewz Twitter, May 14, 2025). This significant drop in a major S&P 500 component could increase overall market volatility, potentially impacting risk sentiment in the cryptocurrency markets. Traders should monitor cross-market correlations as heightened equity volatility often leads to increased activity and price swings in major cryptocurrencies such as Bitcoin and Ethereum. The news underscores the importance of following macroeconomic triggers and large-cap stock movements for short-term crypto trading strategies.