South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry
Published . Updated .
South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry Yahoo Finance
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 Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry Yahoo Finance
Source: Yahoo Finance
Vaneck Etf Trust (SMH) compared with technology stocks (XLK) since 13 Oct 2026
Since the first closing price after “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry,” Vaneck Etf Trust (SMH) is -2.98%. The S&P 500 fund (SPY) is -0.40% over the same days, a -2.59% 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 |
Who reported a Vaneck Etf Trust (SMH) trade near this 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 “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry.”
- 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 “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry.”
- 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 “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry.”
- 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 “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry.”
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).
Who collects and who pays in semiconductors
Companies carried with this story
- SMH Vaneck Etf Trust
In “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry,” Vaneck Etf Trust (SMH) is linked, with no stored direction, high confidence. Reason on file: Semiconductor supply, export-control, or production shocks can transmit across the chip complex
- SOXX Ishares Tr
Ishares Tr (SOXX) is linked, with no stored direction, high confidence in the 13 Oct 2026 story “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry.” Reason on file: Semiconductor supply, export-control, or production shocks can transmit across the chip complex
- AOSL Alpha & Omega Semiconductor
For “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry,” 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
In “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry,” GCT Semiconductor Holding (GCTS) is linked, with no stored direction, medium confidence. 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
For “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry,” Navitas Semiconductor (NVTS) is linked, with no stored direction, medium confidence. 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 “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry,” 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
Tower Semiconductor (TSEM) is linked, with no stored direction, medium confidence in the 13 Oct 2026 story “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry.” 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
In “South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry,” Taiwan Semiconductor Manufacturing (TSM) is linked, with no stored direction, medium confidence. 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
Vaneck Etf Trust (SMH) and the semiconductors link
“South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry” (13 Oct 2026) reaches Vaneck Etf Trust (SMH) through Semiconductors.
Vaneck Etf Trust (SMH) is on the page because Semiconductor supply, export-control, or production shocks can transmit across the chip complex
A second company, Ishares Tr (SOXX), is listed for a different reason: Semiconductor supply, export-control, or production shocks can transmit across the chip complex
Price levels for Vaneck Etf Trust (SMH)
AOSL traded between 21.68 and 30.88 across 20 sessions. The latest close on file is 22.59. SMH traded between 539.11 and 639.33 across 20 sessions. The latest close on file is 548.35. SOXX traded between 492.92 and 596.41 across 20 sessions. The latest close on file is 501.86.
How solid the semiconductors case looks
46 out of 100
“South Korea's chip-heavy stock market is plunging again as AI investors find more reasons to worry” scores 46 out of 100. The score uses 1 sources, and 8 linked companies.