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S&P 500 slides 1.01% to 7,457.69, Nasdaq drops 1.4% to 25,520.24, 10‑year Treasury yield rises to 4.56% – see why chip news and inflation data are rattling
The S&P 500 closed 1.01% lower at 7,457.69 as the 10‑year Treasury yield ticked up to 4.56%, sparking a broad sell‑off that saw the Nasdaq tumble 1.4% and the Dow slip 0.77%【1】.
| At a glance | |
|---|---|
| S&P 500 close | 7,457.69 (‑1.01%) |
| Nasdaq close | 25,520.24 (‑1.4%) |
| Dow Jones close | 52,146.42 (‑0.77%) |
| 10‑yr Treasury yield | 4.56% (up) |
Semiconductor stocks led the decline after Chinese AI startup Moonshot AI announced a new model that it claims narrows the performance gap with U.S. rivals. Edward Jones strategist Angelo Kourkafas linked the announcement to “competition from open‑source models in China” and noted growing price sensitivity in AI spending, suggesting the sector may be entering a maturation phase rather than a breakout【1】. The VanEck Semiconductor ETF (SMH) recorded its third weekly drop in four weeks, down nearly 9% over the period, underscoring the breadth of the pullback.
The rise in Treasury yields coincided with mixed inflation signals. While the June headline CPI eased to 3.5% year‑over‑year, below the 3.9% forecast, core CPI held at 2.6% versus an expected 2.9%【2】. Producer‑price data also showed a slowdown, with headline PPI growth falling to 5.5% annualized from 6.0% in May【2】. These softer readings have prompted bond markets to price in a likely hold at the Fed’s July 29 meeting, though the 10‑year yield’s climb reflects lingering concerns about the pace of disinflation【2】.
Tech earnings remain on the radar, with Alphabet and Tesla slated for July 22 and a wave of major tech reports following in the next two weeks【2】. Meanwhile, renewed U.S.–Iran tensions lifted oil prices, pushing WTI crude to $82.49 a barrel and Brent to $88.10, adding another layer of volatility that could influence both equity and commodity markets【1】.
The market’s reaction highlights how quickly semiconductor news and nuanced inflation data can shift risk sentiment, leaving investors to gauge whether the current yield environment signals a turning point in monetary policy or a temporary blip amid ongoing geopolitical uncertainty.
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AI-assisted synthesis by the TrendWatcher Editorial Desk · sourced from 2 outlets · Jul 18, 2026 · How we report
September is traditionally viewed as the weakest month of the year for the stock market based on historical performance data.
The monthly employment report showing 162,000 jobs added caused the treasury curve to steepen, with the 10-year yield rising 7 basis points and the 2-year yield rising 2 basis points as of early September 2026.
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