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 (B TWD) 2025 Revenue (B TWD) Employees Founded
1 Taiwan Semiconductor 台積電 2330 Semiconductor 59,000 3,809 90,557 1987
2 Delta Electronics 台達電 2308 Electronic Components 5,990 554.9 83,000 1971
3 MediaTek 聯發科 2454 Semiconductor 4,460 596 22,546 1997
4 Hon Hai Foxconn 鴻海 2317 Electronics Manufacturing 3,270 8,100 826,608 1974
5 ASE Group 日月光 3711 Semiconductor 2,270 645.4 84,000 1984
6 Elite Material 台光電 2383 PCB 1,740 94.3 5,310 1992
7 Unimicron Technology 欣興電子 3037 PCB 1,480 131.2 14,592 1990
8 Accton 智邦 2345 Networking 1,360 248.3 6,930 1988
9 Fubon Financial 富邦金控 2881 Financial 1,340 381.5 43,000 2001
10 Quanta Computer 廣達 2382 Electronics Manufacturing 1,290 2,123.7 64,935 1988
11 Cathay Financial 國泰金控 2882 Financial 1,210 349.2 54,009 2001
12 AVC 奇鋐 3017 Cooling 1,180 139.6 10,732 1991
13 Chunghwa Telecom 中華電信 2412 Telecommunications 1,120 236.1 20,143 1996
14 CTBC Financial 中信金控 2891 Financial 1,100 244.9 31,000 2002
15 UMC 聯電 2303 Semiconductor 1,040 237.6 20,000 1980
16 Chroma ATE 致茂 2360 Test & Measurement 960 28.3 3,582 1984
17 Hon Precision 鴻勁 7769 Test & Measurement 950 30.3 800 2015
18 Wiwynn 緯穎科技 6669 Server 930 950.7 7,257 2012
19 Jentech 健策 3653 Cooling 840 20.3 1,839 1987
20 Nan Ya Plastics 南亞塑膠 1303 Petrochemical 760 259.9 29,108 1958
21 Gold Circuit 金像電 2368 PCB 760 59.7 8,150 1981
22 Yuanta Financial 元大金控 2885 Financial 740 128.4 15,548 2002
23 Nanya Technology 南亞科 2408 Semiconductor 710 66.6 3,693 1995
24 Yageo 國巨 2327 Electronic Components 700 132.9 30,624 1987
25 Nan Ya PCB 南電 8046 PCB 690 40.2 5,920 1997
26 Taishin Shin Kong 台新新光金 2887 Financial 630 150.9 30,000 2002
27 Mega Financial 兆豐金控 2886 Financial 620 82 9,838 2002
28 Global Unichip 創意 3443 Semiconductor 610 34.1 882 1998
29 BizLink 貿聯 3665 Electronic Components 580 71.2 20,000 2000
30 Formosa Petrochemical 台塑化 6505 Petrochemical 570 626.1 5,110 1992
31 E.Sun Financial 玉山金控 2884 Financial 550 91.8 9,268 2002
32 Zhen Ding 臻鼎 4958 PCB 480 182.5 48,141 2006
33 SinoPac 永豐金 2890 Financial 480 74.4 15,268 2002
34 Hua Nan Financial 華南金控 2880 Financial 475 69.5 11,423 2001
35 Evergreen Marine 長榮海運 2603 Shipping 470 379 13,265 1968
36 Wistron 緯創 3231 Electronics Manufacturing 465 2,186.5 80,000 2001
37 ASUSTeK 華碩 2357 Computer Brand 460 738.9 17,000 1989
38 Taiwan Mobile 台灣大哥大 3045 Telecommunications 440 198.8 10,645 1997
39 First Financial 第一金控 2892 Financial 440 77.6 8,623 2003
40 Winbond 華邦電 2344 Semiconductor 430 89.4 8,097 1987
41 Uni-President 統一企業 1216 Food & Beverage 420 672.9 87,572 1967
42 Lite-On Technology 光寶科技 2301 Electronic Components 410 166.1 33,163 1975
43 WinWay 穎崴 6515 Test & Measurement 400 7.9 1,200 2001
44 King Slide 川湖 2059 Precision Machinery 400 17.5 1,500 1986
45 KYEC 京元電子 2449 Test & Measurement 390 34.9 8,600 1987
46 KGI 凱基金 2883 Financial 390 65 25,000 2001
47 Taiwan Cooperative Bank 合庫金控 5880 Financial 380 73.8 8,771 2011
48 Largan Precision 大立光 3008 Optics 360 61.2 8,755 1987
49 FarEasTone 遠傳電信 4904 Telecommunications 350 110.4 5,474 1997
50 Formosa Plastics 台塑 1301 Petrochemical 350 175.4 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 306.8 B

Steel downturn, years of losses — no AI tailwind

HTC 宏達電 2498
Market cap now 42.1 B

Smartphone collapse; VR/XR never reached scale

Taiwan Cement 台泥 1101
Market cap now 183.2 B

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

Far Eastern New Century 遠東新世紀 1402
Market cap now 154.2 B

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

Giant Manufacturing 巨大機械 9921
Market cap now 29.6 B

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.