Stock Market Reaches New Heights Amid AI Surge
The Dow Jones Industrial Average, S&P 500, and Nasdaq Composite recently achieved record-high closing values, reflecting gains of 17%, 26%, and 37%, respectively, since President Donald Trump’s second term began on January 20, 2025. The market’s rise is largely attributed to the burgeoning artificial intelligence (AI) industry, which analysts estimate will represent a $15.7 trillion market by 2030.
Key to this growth has been the Tax Cuts and Jobs Act (TCJA), signed by Trump in December 2017, which significantly reduced the corporate tax rate from 35% to 21%. This legislative change triggered over $1 trillion in stock buybacks by S&P 500 companies in the past year alone. However, current trends show a decline in buybacks as capital is increasingly allocated toward AI infrastructure, raising concerns about future earnings per share and market stability amidst high valuations.
In the third quarter of 2025, S&P 500 share repurchases amounted to $249 billion, marking a 6.2% increase from the previous quarter, though major tech firms like Meta and Alphabet have halted their buyback programs to fund AI initiatives. Analysts warn that this shift could lead to reduced EPS growth and potential market corrections, especially given that the Shiller Price-to-Earnings Ratio is nearing a historical high of 43.
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