AI Shares Lift Wall Street as Lower Yields Ease Pressure on Growth Stocks

New York, 22 September 2026 – US equities rallied at Monday’s close as large technology and semiconductor stocks regained momentum, while a retreat in Treasury yields eased pressure on growth valuations. Preliminary figures put the S&P 500 up 1.49% at 7,764.22, the Nasdaq Composite up 2.26% at 27,122.09 and the Dow Jones Industrial Average up 0.72% at 52,053.88. The figures describe one trading session, not a confirmed reversal of the market’s broader concern about inflation, interest rates and the scale of artificial-intelligence spending.

Advanced Micro Devices, Intel and Arm were among the chip-related names drawing attention. AMD’s market value crossed US$1 trillion during the session, a symbolic milestone that also highlights how concentrated expectations have become in a small group of AI beneficiaries. Investors pointed to continuing investment in computing capacity despite safety concerns that had weighed on the sector in the preceding week. For portfolio managers, the critical question is whether earnings can keep pace with capital expenditure and elevated share prices.