The Nasdaq Composite closed at a record 27,477.31 on October 5, up 1.1% for the session. The S&P 500 gained 0.7% to 7,773.95, while the 10-year U.S. Treasury yield rose to 5.31%. That combination matters: technology shares advanced even as the discount rate used to value long-duration earnings moved higher.
What drove the record
The rally was not purely a rate story. PTC jumped 33.5% after Schneider Electric agreed to acquire the software company for $205 per share in cash, valuing the deal at about $22.6 billion. Nvidia and Broadcom each rose 2.1%, reinforcing the concentration of index gains in AI-linked large caps.
Rate expectations nevertheless provided support. Following weaker September employment data, futures markets placed the probability of an October Federal Reserve hike near 22%, down from roughly 70% a week earlier. The October 27–28 FOMC meeting, inflation data and the September meeting minutes remain the next policy tests.
Why investors should care
Lower near-term hike odds reduce one source of pressure on growth-stock multiples. But the 10-year yield near a multi-decade high points in the opposite direction. If long yields stay elevated because of inflation or term-premium concerns, even strong earnings may not produce further valuation expansion.
The bullish reading is that profit growth and AI capital spending are strong enough to offset tighter financial conditions. The bearish reading is that the index is relying on a narrow group of highly valued companies while bond yields leave little room for disappointment.
What to monitor next
- Earnings breadth: whether profit growth extends beyond the largest AI beneficiaries.
- Market breadth: participation by equal-weighted indices, smaller companies and cyclical sectors.
- Rates: the 10-year yield, October hike pricing and the Fed's reaction to inflation and labour data.
- Deal activity: whether the PTC transaction signals a broader software M&A cycle or remains company-specific.
Sources
AP market report, October 5, 2026; Federal Reserve FOMC calendar; FRED Nasdaq Composite series.