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, 2025 full-year revenue filings, annual reports · Snapshot 2026/06 (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 now accounts for 43.8% of the entire market — up from 39% — and the top 10 stocks make up about 61% of it.

Behind TSMC, the risers are all AI supply chain: Delta jumped to #2 (up ~5× in a year on AI power), MediaTek surged, and a wave of PCB/substrate, cooling, testing and networking names — Elite Material, AVC, Chroma, Accton, Yageo — climbed into the top 50, pushing out roughly 20 of the old guard.

🔍 Key Insights

43.8%
TSMC's share of Taiwan's total market cap
Up from 39% — one company ≈ four-fifths of everything else listed
61%
Top 10 stocks as share of the market
Extreme concentration in a handful of large caps
~20
New entrants from the AI supply chain
PCB/substrate, cooling, testing, networking — absent two years ago
12
Financial holding companies in the top 50
Post-consolidation, the steady ballast of the index

📋 Full Ranking

# Company Sector Market Cap (億 TWD) 2025 Revenue (億 TWD) Employees Founded
1 Taiwan Semiconductor 台積電 2330 Semiconductor 590,000 38,090 90,557 1987
2 Delta Electronics 台達電 2308 Electronic Components 59,900 5,549 83,000 1971
3 MediaTek 聯發科 2454 Semiconductor 44,600 5,960 22,546 1997
4 Hon Hai Foxconn 鴻海 2317 Electronics Manufacturing 32,700 81,000 826,608 1974
5 ASE Group 日月光 3711 Semiconductor 22,700 6,454 84,000 1984
6 Elite Material 台光電 2383 PCB 17,400 943 5,310 1992
7 Unimicron Technology 欣興電子 3037 PCB 14,800 1,312 14,592 1990
8 Accton 智邦 2345 Networking 13,600 2,483 6,930 1988
9 Fubon Financial 富邦金控 2881 Financial 13,400 3,815 43,000 2001
10 Quanta Computer 廣達 2382 Electronics Manufacturing 12,900 21,237 64,935 1988
11 Cathay Financial 國泰金控 2882 Financial 12,100 3,492 54,009 2001
12 AVC 奇鋐 3017 Cooling 11,800 1,396 10,732 1991
13 Chunghwa Telecom 中華電信 2412 Telecommunications 11,200 2,361 20,143 1996
14 CTBC Financial 中信金控 2891 Financial 11,000 2,449 31,000 2002
15 UMC 聯電 2303 Semiconductor 10,400 2,376 20,000 1980
16 Chroma ATE 致茂 2360 Test & Measurement 9,600 283 3,582 1984
17 Hon Precision 鴻勁 7769 Test & Measurement 9,500 303 800 2015
18 Wiwynn 緯穎科技 6669 Server 9,300 9,507 7,257 2012
19 Jentech 健策 3653 Cooling 8,400 203 1,839 1987
20 Nan Ya Plastics 南亞塑膠 1303 Petrochemical 7,600 2,599 29,108 1958
21 Gold Circuit 金像電 2368 PCB 7,600 597 8,150 1981
22 Yuanta Financial 元大金控 2885 Financial 7,400 1,284 15,548 2002
23 Nanya Technology 南亞科 2408 Semiconductor 7,100 666 3,693 1995
24 Yageo 國巨 2327 Electronic Components 7,000 1,329 30,624 1987
25 Nan Ya PCB 南電 8046 PCB 6,900 402 5,920 1997
26 Taishin Shin Kong 台新新光金 2887 Financial 6,300 1,509 30,000 2002
27 Mega Financial 兆豐金控 2886 Financial 6,200 820 9,838 2002
28 Global Unichip 創意 3443 Semiconductor 6,100 341 882 1998
29 BizLink 貿聯 3665 Electronic Components 5,800 712 20,000 2000
30 Formosa Petrochemical 台塑化 6505 Petrochemical 5,700 6,261 5,110 1992
31 E.Sun Financial 玉山金控 2884 Financial 5,500 918 9,268 2002
32 Zhen Ding 臻鼎 4958 PCB 4,800 1,825 48,141 2006
33 SinoPac 永豐金 2890 Financial 4,800 744 15,268 2002
34 Hua Nan Financial 華南金控 2880 Financial 4,750 695 11,423 2001
35 Evergreen Marine 長榮海運 2603 Shipping 4,700 3,790 13,265 1968
36 Wistron 緯創 3231 Electronics Manufacturing 4,650 21,865 80,000 2001
37 ASUSTeK 華碩 2357 Computer Brand 4,600 7,389 17,000 1989
38 Taiwan Mobile 台灣大哥大 3045 Telecommunications 4,400 1,988 10,645 1997
39 First Financial 第一金控 2892 Financial 4,400 776 8,623 2003
40 Winbond 華邦電 2344 Semiconductor 4,300 894 8,097 1987
41 Uni-President 統一企業 1216 Food & Beverage 4,200 6,729 87,572 1967
42 Lite-On Technology 光寶科技 2301 Electronic Components 4,100 1,661 33,163 1975
43 WinWay 穎崴 6515 Test & Measurement 4,000 79 1,200 2001
44 King Slide 川湖 2059 Precision Machinery 4,000 175 1,500 1986
45 KYEC 京元電子 2449 Test & Measurement 3,900 349 8,600 1987
46 KGI 凱基金 2883 Financial 3,900 650 25,000 2001
47 Taiwan Cooperative Bank 合庫金控 5880 Financial 3,800 738 8,771 2011
48 Largan Precision 大立光 3008 Optics 3,600 612 8,755 1987
49 FarEasTone 遠傳電信 4904 Telecommunications 3,500 1,104 5,474 1997
50 Formosa Plastics 台塑 1301 Petrochemical 3,500 1,754 7,306 1954

📉 Who Fell Off the List

The AI repricing has losers too. These household names — steel, cement, textiles, bicycles, a former smartphone star — slipped out of the top 50 as capital crowded into the AI chain.

China Steel 中鋼 2002
Market cap now 3,068 億

Steel downturn, years of losses — no AI tailwind

HTC 宏達電 2498
Market cap now 421 億

Smartphone collapse; VR/XR never reached scale

Taiwan Cement 台泥 1101
Market cap now 1,832 億

Weak core cement; energy-storage pivot not yet at scale

Far Eastern New Century 遠東新世紀 1402
Market cap now 1,542 億

Polyester/fiber cycle down; old-economy, no AI story

Giant Manufacturing 巨大 9921
Market cap now 296 億

Bicycle inventory glut; revenue down three years running

📝 Notes

Market cap is derived from each stock's TWSE index weighting (2026/06) against a total market anchored on TSMC (≈NT$59tn / 43.8%). Revenue is full-year 2025 consolidated (for financial holdings, consolidated operating revenue including insurance). Headcount is approximate, on a group/consolidated basis where available — definitions vary across firms, so read the bars as orders of magnitude, not exact comparisons.