S&P 500 dips after hitting record highs amid stretched valuations and market caution.

The S&P 500 and other major indices slipped after testing record highs, with the Shiller P/E Ratio reaching 42.78, signaling overvaluation similar to pre-crash periods in 1929, 2000, and 2008. Analysts warn that the market is technically and fundamentally stretched, suggesting a potential downturn is imminent. Investors are advised to prepare for volatility, with some ETFs offering exposure to market fluctuations. Key stocks like Marvell surged on positive outlooks, while Alphabet plans an $80 billion stock sale to fund AI development, reflecting mixed market dynamics amid caution.