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Taiwan Mask 2338.TW · TWD

Information Technology · Taiwan Stock Exchange · 🇹🇼 Taiwan

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38.30

+9.90%

Close of 9 Nov 2026, in TWD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
You Chuan Investment Company Ltd.35.3m16.54%—30 Apr 2025
Wu (Chao Yih-b)10.5m4.90%—30 Apr 2025
The Vanguard Group, Inc.5.1m2.41%—31 Jul 2025
Wu Lai (Hui Chen)5.1m2.38%—30 Apr 2025
Powerchip Investment Holding Corp4.1m1.93%—30 Apr 2025
Chen (Lidun)3.8m1.76%—30 Apr 2025
Dimensional Fund Advisors, L.P.2.9m1.35%−30k31 Jul 2025
Taiwan Life Insurance Co Ltd2.9m1.34%—30 Apr 2025
Li (Mei Hui-b)2.3m1.07%—30 Apr 2025
Chen (Cheng Hsiang-d)2m0.93%−18k30 Apr 2025
Dimensional Fund Advisors, Ltd.354k0.17%—31 Jul 2025
State Street Global Advisors (US)99.8k0.05%—31 Jul 2025
American Century Investment Management, Inc.66k0.03%—31 Jul 2025
DFA Australia Ltd.29.5k0.01%—31 Jul 2025
Vanguard Global Advisers LLC23k0.01%—30 Jun 2025

Sources and methodology

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Chart on the Overview
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Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.