New York, 6 October 2026 – Wall Street’s artificial-intelligence rally is confronting its sharpest valuation test of the current cycle as the 10-year US Treasury yield trades above 5.3% and the long-bond yield has reached 5.69%, levels not seen together since 2002.
Technology shares have so far resisted the pressure. The Nasdaq 100 reached a record last Friday and has gained about 22% in 2026, while the S&P 500 remains less than 1% below its August peak. Microsoft, Nvidia and Apple have been the largest point contributors to both benchmarks over the past three months, showing how heavily index performance depends on a narrow group of companies.
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