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Test Research 3030.TW · TWD

Information Technology · Taiwan Stock Exchange · 🇹🇼 Taiwan

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221.00

+9.95%

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
Chen (Chieh Yuan-b)37.9m16.02%—30 Nov 2025
Yeh (Mei Hsing)17.3m7.33%—30 Nov 2025
To Shen Investment15.9m6.72%—30 Nov 2025
To Sheng Investment11.2m4.74%—30 Nov 2025
Fidelity Management & Research Company LLC6.2m2.63%—30 Nov 2025
The Vanguard Group, Inc.4.8m2.05%—31 Jan 2026
C Sun Mfg Ltd3.8m1.62%—30 Nov 2025
Shan Lin Investment3.1m1.29%—30 Nov 2025
Dimensional Fund Advisors, L.P.2.9m1.22%+30k31 Jan 2026
Dehong Investment Co., Ltd.2.7m1.16%—30 Nov 2025
Norges Bank Investment Management (NBIM)2.3m0.99%−196k31 Dec 2025
BlackRock Institutional Trust Company, N.A.2.3m0.95%—31 Jan 2026
Mellon Investments Corporation772.1k0.33%−9k31 Jan 2026
BlackRock Advisors (UK) Limited542k0.23%−4k31 Jan 2026
Fidelity Institutional Asset Management389.9k0.16%−134k31 Dec 2025

Sources and methodology

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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.