The S&P 500 has only risen this quickly 4 times since WWII. Once, a historic stock-market crash followed.

Title: The S&P 500 has only risen this quickly 4 times since WWII. Once, a historic stock-market crash followed. Published: 2026-06-02T17:00:00.0000000+00:00 Link: https://www.marketwatch.com/story/the-s-p-500-has-only-risen-this-quickly-4-times-since-wwii-once-a-historic-stock-market-crash-followed-ed41ab2d?mod=mw_rss_topstories Christine Idzelis AFP via Getty Images Summary: The S&P 500 has overcome worries about artificial intelligence and the fallout from the war in Iran to stage one of its strongest two-month showings on record.