This Week in the Chain — Jul 29, 2026

Top gainers

Market-cap moves versus Jul 27, 2026: 370 names at 1% or more. Live caps, not adjusted beyond price and share count.

1. 1Lingsen Precision$30M → $40M+33.3%
2. 2Celestica$34.1B → $40.3B+18.1%
3. 3Ambarella$2.8B → $3.0B+7.1%
4. 4Sony Semiconductor Solutions$128.2B → $136.6B+6.5%
5. 5Tencent$508.5B → $535.3B+5.3%
6. 6Avantor$8.1B → $8.5B+5.1%
7. 7IBM$204.8B → $214.4B+4.7%
8. 8Goodix Technology$3.5B → $3.6B+4.6%

Source: wafergraph live market caps (Yahoo Finance × SEC shares). As of 2026-07-29.

Coverage changes

How coverage shifted since Jul 27, 2026.

Source: wafergraph dataset. As of 2026-07-29.

Top decliners

1. 1Kokusai Electric$12.2B → $8.6B-29.3%
2. 2Nepes$280M → $200M-28.6%
3. 3Foosung$730M → $530M-27.4%
4. 4SCREEN Holdings$18.4B → $13.5B-26.2%
5. 5Daeduck Electronics$3.8B → $2.9B-25.3%
6. 6LG Innotek$9.9B → $7.5B-24.6%
7. 7Amkor Technology$14.9B → $11.3B-24.1%
8. 8SFA Semicon$590M → $450M-23.7%

Source: wafergraph live market caps. As of 2026-07-29.

Why it matters

Lingsen Precision sits in OSAT — Outsourced semiconductor assembly and test (OSAT) companies package finished dies into the chips and modules that go into end products. As advanced packaging — chiplets, CoWoS, HBM stacking, and fan-out technologies — moves from niche to mainstream, OSATs have become strategic partners rather than commodity handlers. ASE Technology (which includes SPIL) is the world's largest OSAT; Amkor is a major player in advanced packaging in the Americas and Korea. TSMC and Samsung also offer advanced packaging in-house, competing directly with OSATs at the leading edge. 22 companies in the wafergraph dataset sit in OSAT.

Segment context from the wafergraph taxonomy.