Ningbo Yongsi Electronics (688362, SSE) is a China company in the Foundry & OSAT segment of the AI compute value chain. As of October 04, 2026, its market cap is $3.7 billion ($3.7B), ranking #199 of 244 companies overall and #17 of 17 in the Foundry & OSAT segment (0.2% of the segment, 0.01% of the chain). Over the past year the stock gained 55.1% (52-week range 29.05 – 114.80 CNY).
| Company | Ningbo Yongsi Electronics（甬矽电子） |
|---|---|
| Ticker | 688362 · SSE |
| Segment | Foundry & OSAT |
| Headquarters | China |
| Market cap | $3.7B（$3.7 billion） |
| Close | 54.09 CNY (October 04, 2026) |
| Today | -4.77% |
| 30 days | -26.31% |
| 1 year | +55.12% |
| 52-wk high / low | 114.80 / 29.05 CNY |
| Share of segment | 0.2% (Foundry & OSAT: 17 companies) |
| Share of chain | 0.01% (244 companies combined) |
| Segment leader | TSMC ($2.03T) |
| Net income (TTM) | $13.5 million |
|---|---|
| P/E ratio (TTM) | 270.6 |
| P/B ratio | 6.39 |
| Basis | PE/PB 腾讯行情；净利润=总市值÷PE 推算（TTM） (source: tencent, 2026-10-05 08:05) |
| # | Company | Market | Market cap |
|---|---|---|---|
| 1 | TSMC 2330.TW | TW | $2.03T |
| 2 | ASE Technology 3711.TW | TW | $100.0B |
| 3 | SMIC 0981.HK | HK | $65.7B |
| 4 | United Microelectronics 2303.TW | TW | $63.7B |
| 5 | GlobalFoundries GFS | US | $28.0B |
| 6 | Hua Hong Semiconductor 1347.HK | HK | $25.9B |
| 7 | JCET Group 600584 | SH | $17.1B |
| 8 | Amkor Technology AMKR | US | $13.9B |
| 9 | Tongfu Microelectronics 002156 | SZ | $13.5B |
| 17 | Ningbo Yongsi Electronics 688362 | SH | $3.7B |
| 10 | King Yuan Electronics 2449.TW | TW | $11.9B |