How major US stock indexes fared Monday 5/18/2026 - Yahoo Finance

How major US stock indexes fared Monday 5/18/2026    Yahoo Finance Oil prices rise 3% to two-week high on Iran war supply concerns    Reuters Asia-Pacific markets mostly fall as Trump’s Iran warning stokes fresh oil supply fears    CNBC Stocks, Bonds and Oil Zigzag Amid Mixed Signals on War Talks    The New York Times Markets News, May 18, 2026: Nasdaq, S&P 500 Start Week Lower as Tech Shares Drop; Oil Prices Rise; Treasury Yields at Highest Level in Year    Investopedia

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