S&P 500 Achieves Rare Consecutive Double-Digit Gains Amid CAPE Ratio Surge

The S&P 500 has experienced four consecutive years of double-digit gains, which hasn't happened since the late 1990s. This rare occurrence is matched by a high CAPE ratio, which has surpassed 40 only once before in January 1999.

CAPE stands for cyclically adjusted price-to-earnings ratio and is seen as a more reliable valuation metric than the average P/E ratio. Today's value is nearly 41 after surpassing the 40 mark in May.

JPMorgan Chase CEO Jamie Dimon expects hyperscalers to spend $1 trillion on AI next year, driven by companies like Amazon and Alphabet planning to invest around $700 billion this year. This growth has led to some of the biggest gainers being infrastructure companies that provide data centers, energy, and memory products.

Investors are cautioned to consider a balanced portfolio with both growth stocks and defensive stocks in case the market crashes, as the S&P 500 has always rebounded after downturns.