Key facts
- Chip stocks have lost over $1 trillion in market cap this week.
- The Philadelphia Semiconductor Index is down 12% from its early October peak.
- SK Hynix and Samsung shares led the decline, with SK Hynix down 11% and Samsung down 9% on Thursday.
- US inflation grew at 3.7% in September, exceeding expectations.
- Producer prices rose 6.3% annually in September.
- The 10-year US Treasury yield fell to 5.06% on Thursday.
Chip stocks have experienced a significant sell-off this week, with the sector's market capitalization dropping by over $1 trillion. The Philadelphia Semiconductor Index has fallen 12% from its early October peak, marking its worst losing streak since May 2025. The decline began in South Korea with SK Hynix and Samsung, driven by concerns over high valuations. Fears of China catching up in chip technology, hotter-than-expected inflation data, and worries about tech companies overspending on artificial intelligence have further dampened investor sentiment. The Federal Reserve is increasingly expected to hike interest rates again this year due to persistent inflation. This has led to a flight-to-safety trade, with Treasury yields falling despite inflation concerns. Some analysts, however, see a potential inflection point for chip stocks, citing ongoing thematic strength and the possibility of a market turnaround.