The seven US stock market giants have collectively lost $1.4 trillion in market value since their peaks.

The Magnificent 7 of U.S. stocks have recently suffered a significant downturn, entering a technical correction zone, with a combined market value of $1.4 trillion evaporated. The "Magnificent 7" index tracked by Bloomberg has fallen more than 10% since its high in December last year. The tech stock correction has exposed the sharp internal differentiation, with Tesla the worst performer, down more than 25% this year and its market value shrank nearly 40% from its historical high, once falling more than 10% on Tuesday. The main reason is the intensified industry competition, eroded market share, and poor sales data, such as nearly halved European sales in January. Microsoft and Google also saw a significant decline. Meta has gained investor favor with its AI strategy, and its stock price has risen against the trend, setting a record for the longest consecutive rise in S&P 500 components, with a significant increase in its market value. Hartnett, a strategist at Bank of America, warned that investors are skeptical about the future upside potential of the S&P 500 index as the tech stock correction and the outperformance of European and Chinese stocks over U.S. stocks, and they are more inclined to international stocks. He believes that the Magnificent 7 may face a shake-up, although investors are not currently pessimistic about large tech stocks, but these stocks are easy to fall if the trading logic fails. So far in 2025, U.S. stocks have lagged behind other global markets, with the S&P 500 index up less than 2%, the Magnificent 7 index down 3.3%, and the MSCI global index ex-U.S. up 7%.