Is the Vanguard S&P 500 ETF a Buy?

Every seasoned investor knows the Vanguard S&P 500 ETF (NYSEMKT: VOO) tracks America's 500 largest companies. What's less obvious is that owning it today is effectively a bet on artificial intelligence (AI) leadership -- at valuations that rival past market bubbles.The fund is up 12.8% year to date through Sept. 26, 2025. The benchmark S&P 500's forward price-to-earnings (P/E) ratio now sits well above its 25-year average, while the cyclically adjusted price-to-earnings (CAPE) ratio has surged past 40 -- its highest since the 2000 dot-com peak. With October looming -- home to 1929's and 1987's famous crashes -- history argues for caution.Image source: Getty Images.Continue readingWeiter zum vollständigen Artikel bei MotleyFool Weiter zum vollständigen Artikel bei MotleyFool