A chip report out of China erased $1 trillion in market value
Measured from 28 Jul 2026 (event start), not the 28 Jul 2026 announcement
Treasuries moved -4.4%, the largest reaction measured, though not statistically significant, meaning it may reflect normal market noise rather than the event itself. This is a provisional result; the full measurement window is not yet complete.
TLT · down
What Happened
A report on Chinese AI-model developments and chip specifications triggered a sharp repricing of semiconductor valuations, with chipmakers losing approximately $1 trillion in market capitalization over a single week. The report suggested China had advanced AI capability or reduced dependence on Western semiconductor imports faster than previously assessed, disrupting investor confidence in the growth narrative supporting elevated semiconductor equity valuations. This repricing is distinct from energy or geopolitical shocks but carries cascading implications for demand forecasting: semiconductor weakness typically signals expectations of slower technology capex, reduced data-center builds, and lower overall economic growth expectations, all of which reduce industrial electricity demand and energy consumption.
Semiconductor repricing signals downward revision of data-center and technology capex growth, reducing incremental energy demand and compressing crude and LNG price expectations
Report released approximately July 28, 2026; repricing completed within one week; ongoing sentiment drag on growth expectations
Report of China AI-model advances and revised chip capabilities erased roughly $1 trillion in chipmaker valuations over one week ending approximately July 28, 2026
Read how dates work →Partial reaction shown. Significance flags are marked provisional and may change as more price data accumulates.
How To Read This
Each sector below is a basket of named stocks. The percentage shown is the move beyond the overall market (S&P 500) , what event studies call the . A move only counts as when it sits clearly outside that basket's normal weekly swings.
How Much Sectors Moved
Path over time. Click a sector in the legend to toggle it. Dashed lines mark key moments.
Treasuries moved most at -4.4% against the market, the direction you would expect from a financial crisis. None of the moves cleared the significance threshold. Read the direction as flavour, not signal.
Volatility
Volatility measures how erratic prices became, a separate signal from the direction of the move.
Market fear eased
- Gold21% → 29%1.3x more volatile after
- Treasuries7% → 13%1.7x more volatile after
- Defense33% → 16%2.0x calmer after
- Broad market11% → 18%1.6x more volatile after
The VIX fell 0.0 percent across the window, essentially flat. Read this as the market's demand for protection, not the direction of any single sector.
A ratio above 1.00 means the sector's daily-price swings widened after the event. Treasuries became the most erratic at 1.73×, and 3 of 4 sectors traded meaningfully wider than they did before. Volatility is a separate signal from direction: a sector can end flat and still have traded wildly along the way.
Phases
| Sector | Peak Move | Peak Day | Reverted By |
|---|---|---|---|
| Gold | +2.7% | Day 1 | Day 3 |
| Treasuries | -4.8% | Day 7 | Still elevated |
| Defense | +10.4% | Day -1 | Still elevated |
| Broad market | -0.1% | Day -3 | Day -2 |
The reaction peaked around day 1 on average. 2 of 4 sectors reverted inside the window, 2 were still elevated at the close. A reaction that reverts is a shock priced in; one that stays is a re-rating.
Companies Most Affected
Measured 10 days after the event. Reaction still developing; the full window is not yet complete.
This tool informs your decision. It does not give investment advice.