Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition
Published . Updated .
South Korean stocks tumbled in particular, as reports of a breakthrough by a Chinese chip rival heightened concerns about competition.
Directly affected
- No company is named in this report.
Indirectly affected
- NVDA NVIDIA
Chip makers and their suppliers move when export rules or Taiwan risk changes
- TSM Taiwan Semiconductor
The main advanced-chip manufacturer sits in Taiwan
- ASML ASML
Chipmaking-equipment sales follow export rules
- AVGO Broadcom
Chip makers and their suppliers move when export rules or Taiwan risk changes
- AMD AMD
Chip makers and their suppliers move when export rules or Taiwan risk changes
- AMAT Applied Materials
Chip-equipment makers feel export controls
- LRCX Lam Research
Chip-equipment makers feel export controls
- SMH VanEck Semiconductor
A fund of semiconductor companies
- SOXX iShares Semiconductor
A fund of semiconductor companies
- QQQ Invesco QQQ
Big tech moves with chip-supply risk
Price reaction, T-5 to T+3
South Korean stocks tumbled in particular, as reports of a breakthrough by a Chinese chip rival heightened concerns about competition.
Source: The New York Times
The price since 13 Oct 2026: Alpha & Omega Semiconductor (AOSL) versus the S&P 500
Since the first closing price after “Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition,” Alpha & Omega Semiconductor (AOSL) is -3.73%. The S&P 500 fund (SPY) is -0.40% over the same days, a -3.33% difference versus the market.
| Company | When | Move | Status |
|---|---|---|---|
| AMAT | that day | -6.75% | final price |
| AMAT | the next day | -10.24% | final price |
| AMAT | two days later | -13.56% | final price |
| AMAT | three days later | -17.75% | final price |
| AMAT | three days earlier | +2.39% | final price |
| AMAT | five days earlier | +6.64% | final price |
| AMD | that day | +1.88% | final price |
| AMD | the next day | -3.93% | final price |
| AMD | two days later | -5.41% | final price |
| AMD | three days later | -11.03% | final price |
| AMD | three days earlier | +4.46% | final price |
| AMD | five days earlier | +9.29% | final price |
| ASML | that day | -1.94% | final price |
| ASML | the next day | -5.79% | final price |
| ASML | two days later | -5.27% | final price |
| ASML | three days later | -6.25% | final price |
| ASML | three days earlier | +1.15% | final price |
| ASML | five days earlier | +4.76% | final price |
| AVGO | that day | +0.73% | final price |
| AVGO | the next day | -2.38% | final price |
| AVGO | two days later | -2.96% | final price |
| AVGO | three days later | -7.36% | final price |
| AVGO | three days earlier | +1.48% | final price |
| AVGO | five days earlier | +5.95% | final price |
| LRCX | that day | -2.60% | final price |
| LRCX | the next day | -7.35% | final price |
| LRCX | two days later | -10.34% | final price |
| LRCX | three days later | -14.72% | final price |
| LRCX | three days earlier | +3.62% | final price |
| LRCX | five days earlier | +7.91% | final price |
Alpha & Omega Semiconductor (AOSL) filings in this semiconductors story
- Gilbert Cisneros buy On Semiconductor (ON) ($15,001 - $50,000). That is 15 days before publication, inside 30 days. The filing is listed beside the story “Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition.”
- Rohit Khanna buy On Semiconductor (ON) ($15,001 - $50,000). That is 20 days before publication, inside 30 days. The filing is listed beside the story “Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition.”
- Gilbert Cisneros buy Taiwan Semiconductor Manufacturing (TSM) ($1,001 - $15,000). That is 21 days before publication, inside 30 days. The filing is listed beside the story “Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition.”
- Michael T. McCaul sell Taiwan Semiconductor Manufacturing (TSM) ($1,001 - $15,000). That is 49 days before publication, inside 60 days. The filing is listed beside the story “Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition.”
Public disclosure filings, not a recommendation. The filing link is the source document. News use of these reports still sits under 5 U.S.C. § 13107(c).
Alpha & Omega Semiconductor (AOSL) on one side of this semiconductors story
Companies mentioned with this story
- AOSL Alpha & Omega Semiconductor
In “Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition,” Alpha & Omega Semiconductor (AOSL) is linked, with no stored direction, medium confidence. Reason on file: GA selected AOSL as a RELATED security because its canonical security name directly matches this event's themes: semiconductors, semiconductor. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- GCTS GCT Semiconductor Holding
GCT Semiconductor Holding (GCTS) is linked, with no stored direction, medium confidence in the 13 Oct 2026 story “Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition.” Reason on file: GA selected GCTS as a RELATED security because its canonical security name directly matches this event's themes: semiconductors, semiconductor. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- NVTS Navitas Semiconductor
Navitas Semiconductor (NVTS) is linked, with no stored direction, medium confidence in the 13 Oct 2026 story “Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition.” Reason on file: GA selected NVTS as a RELATED security because its canonical security name directly matches this event's themes: semiconductors, semiconductor. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- ON On Semiconductor
For “Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition,” On Semiconductor (ON) is linked, with no stored direction, medium confidence. Reason on file: GA selected ON as a RELATED security because its canonical security name directly matches this event's themes: semiconductors, semiconductor. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- TSEM Tower Semiconductor
In “Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition,” Tower Semiconductor (TSEM) is linked, with no stored direction, medium confidence. Reason on file: GA selected TSEM as a RELATED security because its canonical security name directly matches this event's themes: semiconductors, semiconductor. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
- TSM Taiwan Semiconductor Manufacturing
Taiwan Semiconductor Manufacturing (TSM) is linked, with no stored direction, medium confidence in the 13 Oct 2026 story “Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition.” Reason on file: GA selected TSM as a RELATED security because its canonical security name directly matches this event's themes: semiconductors, semiconductor. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
Alpha & Omega Semiconductor (AOSL) and the semiconductors link
“Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition” (13 Oct 2026) reaches Alpha & Omega Semiconductor (AOSL) through Semiconductors.
The link for Alpha & Omega Semiconductor (AOSL) is this: GA selected AOSL as a RELATED security because its canonical security name directly matches this event's themes: semiconductors, semiconductor. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
GCT Semiconductor Holding (GCTS) is here too. Its reason reads: GA selected GCTS as a RELATED security because its canonical security name directly matches this event's themes: semiconductors, semiconductor. This is an explainable DERIVED market relationship, not a claim that the security was named in the source article
Dates in the story, and the Alpha & Omega Semiconductor (AOSL) price range
AOSL traded between 21.68 and 30.88 across 20 sessions. The latest close on file is 22.59. GCTS traded between 1.51 and 2.26 across 20 sessions. The latest close on file is 1.51. NVTS traded between 8.29 and 13.19 across 20 sessions. The latest close on file is 8.63.
What the saved facts support for Alpha & Omega Semiconductor (AOSL)
46 out of 100
“Chip Stocks Tumble on A.I. Spending Fears and Rising Chinese Competition” scores 46 out of 100. The score uses 1 sources, and 6 linked companies.