A 69 trillion milestone—AI narratives hold up half the sky, and Micron emerges as a new trillion-dollar market cap leader.

CoinWorld News, the S&P 500 Index has for the first time surpassed a market capitalization of $69 trillion, reaching a new all-time high. Over the past six months, the index has increased by 11%, driven by multiple factors. Although the U.S. economy experienced uncertainty in 2026, the booming artificial intelligence industry has had a positive impact on the market. Chip manufacturers such as NVIDIA, AMD, and Marvell have been favored by investors, becoming high-quality investments. Memory chip maker Micron performed particularly well, with its stock price rising by 262%, and its market cap surpassing $1 trillion for the first time, currently standing at $1.17 trillion.