Semiconductor Stocks Declined After Market Rally
Investors pared exposure to technology sector risks as bond yields and oil prices rose following a strong prior week.
Updated on Sept. 28, 2026 in Semiconductors
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United States technology and semiconductor stocks fell on Monday as investors reassessed elevated valuations. Nvidia served as an outlier in the sector, as shares rose following an announced $150 billion share buyback program.
Why it matters
The broad sector pullback underscores how quickly investor sentiment can shift when macro-economic indicators like bond yields and oil prices rise. Markets are recalibrating to reduce risk after the technology sector experienced a strong rally during the week of September 21, 2026.
The sector-wide sell-off hit major players, with Micron Technology falling 2.54% to $1,054.84 and Western Digital declining 2.72% to $444.38. Nvidia announced a new $150 billion buyback authorization, bringing its total repurchase program capacity to $235 billion.
The players
Nvidia
A dominant designer of graphics processing units that power modern AI data centers and high-performance computing infrastructure.
Intel
A leading microprocessor manufacturer that develops central processing units and foundry services for the global semiconductor market.
AMD
A semiconductor company that produces high-performance processors and graphics hardware for both data center and consumer markets.
The details
The downturn reflected a broader market reaction as investors moved to hedge against changing macroeconomic signals, including shifting bond yields and rising oil prices. While most semiconductor companies saw declines—including SK Hynix US-listed ADRs falling 4.16% to $183.60—Nvidia defied the trend. Its share price rose on news of its capital return strategy, which leverages existing cash reserves to reduce total outstanding shares.
Timeline
The technology sector experienced a strong market rally during the week of September 21, 2026.
US technology and semiconductor stocks declined on September 28, 2026.
The Tech Race
This decline follows the momentum established by the 2026 technology sector market rally. The movement marks a departure from the recent trend of steady valuation growth as investors weigh macroeconomic risks against corporate capital returns.
Investors and those tracking sector performance should monitor how these valuations adjust in the coming sessions relative to volatility in bond yields. No immediate changes to product availability or pricing for the average consumer are expected as a result of these market-driven shifts.
The takeaway
Market participants are currently prioritizing stability over the aggressive growth seen earlier in the month as macro-financial indicators tighten. Watch for the upcoming quarterly reports from these semiconductor firms to see if fundamental demand for AI infrastructure offsets current investor caution.
Further reading
For more on the current health of the chip industry, visit our Semiconductors section.
Source note: This article includes information reported by NDTV Profit.
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