This Week in the Chain · Jul 23, 2026
This Week in the Chain — Jul 23, 2026
What changed in the semiconductor & AI supply chain since Jul 20, 2026: Soitec +32.9%, Win Semiconductors -77.9%. Auto-generated from the wafergraph dataset — every figure computed, no editorializing.
Top gainers
Largest market-cap moves since Jul 20, 2026 (362 priced companies moved ≥1%). Figures are live market caps; moves reflect price action plus any share-count updates.
- 1Soitec$3.6B → $4.7B+32.9%
- 2Super Micro Computer$15.4B → $19.8B+28.2%
- 3Ferrotec$2.3B → $2.9B+26.7%
- 4Cipher Mining$8.1B → $10.0B+23.1%
- 5Aehr Test Systems$2.5B → $3.0B+21.1%
- 6Nebius Group$45.8B → $55.4B+20.9%
- 7Wistron$14.1B → $17.1B+20.9%
- 8ASPEED Technology$16.6B → $20.0B+20.3%
Source: wafergraph live market caps (Yahoo Finance × SEC shares). As of 2026-07-23.
Top decliners
- 1Win Semiconductors$4.1B → $910M-77.9%
- 2GlobalWafers$18.7B → $16.6B-11.5%
- 3Vicor$10.7B → $9.9B-7.7%
- 4PSK Inc$3.3B → $3.1B-7.5%
- 5Tencent$548.5B → $511.1B-6.8%
- 6Wafer Works$2.5B → $2.3B-6.5%
- 7Andes Technology$360M → $340M-5.6%
- 8SUMCO$8.4B → $8.0B-5.0%
Source: wafergraph live market caps. As of 2026-07-23.
Coverage changes
How the dataset's coverage shifted versus the last snapshot.
Source: wafergraph dataset. As of 2026-07-23.
Why it matters
Win Semiconductors sits in Foundry — Pure-play foundries manufacture chips designed by others, enabling the fabless model. TSMC is the world's leading logic foundry — it manufactures the most advanced nodes and produces chips for most of the largest fabless companies, making it arguably the single most strategically important company in the supply chain. Samsung also offers foundry services and is a key alternative for leading-edge logic. Specialized foundries such as Win Semiconductors (GaAs RF), GlobalFoundries, UMC, and SMIC serve the much larger market for mainstream and specialty nodes. Watch this segment for second-order supply-chain effects.
Segment context from the wafergraph taxonomy.