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These Were the 2 Worst-Performing Stocks in the S&P 500 in May 2025
These two S&P 500 stocks, which fell between 18.2% and 26.6% in May, are worth watching.
The S&P 500 (SNPINDEX: ^GSPC) index, the most widely followed index in the stock market, briefly entered bear market territory in April but rebounded in May, much to investors' relief. Yet, although the index gained 6.2% in May, nearly 30% of its constituent 500 stocks fell last month, with two healthcare stocks emerging as the worst-performing S&P 500 stocks in May.
Image source: Getty Images.
UnitedHealth Group (NYSE: UNH) was the worst-performing stock in the S&P 500 last month. It plunged 26.6% to 52-week lows of $248.88 per share on May 15 after CEO Andrew Witty abruptly resigned and UnitedHealth withdrew its earnings outlook for the full year as Medicare Advantage costs surged.
