Taiwan's Top 50 Companies
Market cap as bubble area — the corporate map of a 23-million-person island
Bigger bubble = larger market cap. Color = sector. Toggle to revenue or headcount, click a sector to filter, drag the bubbles around.
Source: TWSE and TPEx OpenAPI (close × shares outstanding), 2025 full-year revenue filings, annual reports · Snapshot 2026/10/22 (approximate, not investment advice)
The AI Boom Repriced the Whole Island
In barely two years, the AI buildout rewrote Taiwan's corporate ranking. TSMC alone (about NT$61.8 trillion) accounts for 41.0% of the TWSE's total market cap, and the top 10 stocks make up about 59% of it.
Since the June snapshot the list has been reshuffled again. MediaTek moved up to #2 (about NT$6.4 trillion) while Delta slipped from #2 to #3 (about NT$4.1 trillion, roughly 30% below June). Nan Ya Plastics jumped from #20 to #6, Nanya Technology doubled to #13, and King Slide and Largan both more than doubled. Five names entered — ASPEED, Advantech, Kinsus, PharmaEssentia and MPI — replacing Uni-President, Far EasTone, BizLink, KYEC and Winway; the cut-off for #50 rose from about NT$350 billion to NT$453 billion.
Key Insights
Full Ranking
| # | Company | Sector | Market Cap (B TWD) | 2025 Revenue (B TWD) | Employees | Founded |
|---|---|---|---|---|---|---|
| 1 | Taiwan Semiconductor 台積電 2330 | Semiconductor | 61,848.7 | 3,809 | 90,557 | 1987 |
| 2 | MediaTek 聯發科 2454 | Semiconductor | 6,435.9 | 596 | 22,546 | 1997 |
| 3 | Delta Electronics 台達電 2308 | Electronic Components | 4,052.2 | 554.9 | 83,000 | 1971 |
| 4 | Hon Hai Foxconn 鴻海 2317 | Electronics Manufacturing | 3,448.6 | 8,100 | 826,608 | 1974 |
| 5 | ASE Group 日月光 3711 | Semiconductor | 2,923.8 | 645.4 | 84,000 | 1984 |
| 6 | Nan Ya Plastics 南亞塑膠 1303 | Petrochemical | 2,387.2 | 259.9 | 29,108 | 1958 |
| 7 | Fubon Financial 富邦金控 2881 | Financial | 2,220.2 | 381.5 | 43,000 | 2001 |
| 8 | Elite Material 台光電 2383 | PCB | 1,816.7 | 94.3 | 5,310 | 1992 |
| 9 | Unimicron Technology 欣興電子 3037 | PCB | 1,780.8 | 131.2 | 14,592 | 1990 |
| 10 | Cathay Financial 國泰金控 2882 | Financial | 1,665 | 349.2 | 54,009 | 2001 |
| 11 | UMC 聯電 2303 | Semiconductor | 1,577.5 | 237.6 | 20,000 | 1980 |
| 12 | CTBC Financial 中信金控 2891 | Financial | 1,473.7 | 244.9 | 31,000 | 2002 |
| 13 | Nanya Technology 南亞科 2408 | Semiconductor | 1,428.4 | 66.6 | 3,693 | 1995 |
| 14 | Quanta Computer 廣達 2382 | Electronics Manufacturing | 1,322.7 | 2,123.7 | 64,935 | 1988 |
| 15 | AVC 奇鋐 3017 | Cooling | 1,234.9 | 139.6 | 10,732 | 1991 |
| 16 | Chunghwa Telecom 中華電信 2412 | Telecommunications | 1,225.7 | 236.1 | 20,143 | 1996 |
| 17 | Taishin Shin Kong 台新新光金 2887 | Financial | 1,057.3 | 150.9 | 30,000 | 2002 |
| 18 | Yageo 國巨 2327 | Electronic Components | 1,046 | 132.9 | 30,624 | 1987 |
| 19 | Wiwynn 緯穎科技 6669 | Server | 1,030.8 | 950.7 | 7,257 | 2012 |
| 20 | Global Unichip 創意 3443 | Semiconductor | 1,016.5 | 34.1 | 882 | 1998 |
| 21 | Formosa Petrochemical 台塑化 6505 | Petrochemical | 1,014.5 | 626.1 | 5,110 | 1992 |
| 22 | Yuanta Financial 元大金控 2885 | Financial | 1,003.8 | 128.4 | 15,548 | 2002 |
| 23 | Accton 智邦 2345 | Networking | 996 | 248.3 | 6,930 | 1988 |
| 24 | Hon Precision 鴻勁 7769 | Test & Measurement | 949.1 | 30.3 | 800 | 2015 |
| 25 | King Slide 川湖 2059 | Precision Machinery | 929.6 | 17.5 | 1,500 | 1986 |
| 26 | Jentech 健策 3653 | Cooling | 893.5 | 20.3 | 1,839 | 1987 |
| 27 | E.Sun Financial 玉山金控 2884 | Financial | 881.7 | 91.8 | 9,268 | 2002 |
| 28 | Chroma ATE 致茂 2360 | Test & Measurement | 842 | 28.3 | 3,582 | 1984 |
| 29 | Mega Financial 兆豐金控 2886 | Financial | 818.8 | 82 | 9,838 | 2002 |
| 30 | Nan Ya PCB 南電 8046 | PCB | 817.4 | 40.2 | 5,920 | 1997 |
| 31 | Largan Precision 大立光 3008 | Optics | 807.7 | 61.2 | 8,755 | 1987 |
| 32 | Hua Nan Financial 華南金控 2880 | Financial | 707 | 69.5 | 11,423 | 2001 |
| 33 | ASUSTeK 華碩 2357 | Computer Brand | 702.7 | 738.9 | 17,000 | 1989 |
| 34 | Winbond 華邦電 2344 | Semiconductor | 695.3 | 89.4 | 8,097 | 1987 |
| 35 | SinoPac 永豐金 2890 | Financial | 685.2 | 74.4 | 15,268 | 2002 |
| 36 | ASPEED 信驊 5274 | Semiconductor | 665.7 | 9.1 | 140 | 2004 |
| 37 | Wistron 緯創 3231 | Electronics Manufacturing | 651.7 | 2,186.5 | 80,000 | 2001 |
| 38 | Zhen Ding 臻鼎 4958 | PCB | 642.6 | 182.5 | 48,141 | 2006 |
| 39 | KGI 凱基金 2883 | Financial | 640.8 | 65 | 25,000 | 2001 |
| 40 | First Financial 第一金控 2892 | Financial | 609 | 77.6 | 8,623 | 2003 |
| 41 | Lite-On Technology 光寶科技 2301 | Electronic Components | 591.8 | 166.1 | 33,163 | 1975 |
| 42 | Gold Circuit 金像電 2368 | PCB | 591.6 | 59.7 | 8,150 | 1981 |
| 43 | Advantech 研華 2395 | Industrial Computer | 582.3 | 70.9 | 8,849 | 1981 |
| 44 | Evergreen Marine 長榮海運 2603 | Shipping | 562.9 | 379 | 13,265 | 1968 |
| 45 | Kinsus 景碩 3189 | PCB | 519.5 | 39.4 | 6,401 | 2000 |
| 46 | Taiwan Mobile 台灣大哥大 3045 | Telecommunications | 495.2 | 198.8 | 10,645 | 1997 |
| 47 | PharmaEssentia 藥華藥 6446 | Biotech | 490 | 15.6 | 600 | 2000 |
| 48 | MPI 旺矽 6223 | Test & Measurement | 479.1 | 13.4 | 1,800 | 1995 |
| 49 | Formosa Plastics 台塑 1301 | Petrochemical | 469.8 | 175.4 | 7,306 | 1954 |
| 50 | Taiwan Cooperative Bank 合庫金控 5880 | Financial | 453.3 | 73.8 | 8,771 | 2011 |
Who Fell Off the List
Falling off the list comes in two kinds. Steel, cement, textiles, bicycles and a former smartphone star slipped out of the top 50 earlier, as capital crowded into the AI chain. Since June, five more have been pushed out as the cut-off for #50 rose from about NT$350 billion to NT$453 billion.
Steel downturn, years of losses — no AI tailwind
Smartphone collapse; VR/XR never reached scale
Weak core cement; energy-storage pivot not yet at scale
Polyester/fiber cycle down; old-economy, no AI story
Bicycle inventory glut; revenue down three years running
Market cap up about 8% since June, but not fast enough: #51, just outside the cut-off
Up about 19% since June, still short of the cut-off: #56
Market cap down about 35% since the June snapshot: #58
Market cap down about 14% since the June snapshot: #62
Share price fell about 40%, from NT$8,085 at end-June to NT$4,795
Notes
Market cap = closing price on 2026/10/22 × common shares outstanding (TWSE and TPEx OpenAPI; listed and OTC stocks, emerging board excluded). TSMC's share and the top-10 share are measured against the TWSE total (about NT$150.8 trillion); the top-50 share against TWSE plus TPEx (about NT$161.4 trillion). Revenue is full-year 2025 consolidated (for financial holdings, consolidated operating revenue including insurance); the five new entrants use their announced 2025 revenue rounded to NT$100 million, the rest carry over from the June version. Headcount is approximate, on a group/consolidated basis where available — definitions vary, so read it as an order of magnitude. For the five new entrants it is the latest figure we could find: ASPEED about 140 (press report), Advantech 8,849 and PharmaEssentia 600 (2024 reports), Kinsus 6,401 (end of 2024), MPI about 1,800 (undated source).