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I

Idorsia IDIA.SW · CHF

Health Care · SIX · 🇨🇭 Switzerland

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4.15

+2.22%

Close of 9 Nov 2026, in CHF

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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
Clozel (Jean-Paul & Martine)54.9m30.08%+9.4k31 Dec 2025
Fidelity Management & Research Company LLC10.1m5.54%—31 Dec 2025
Johnson & Johnson9.6m5.25%—31 Dec 2025
Maag (Rudolf)9m4.92%+3m31 Dec 2025
UBS Asset Management (Switzerland)7.7m4.24%+940.8k31 Dec 2025
Zürcher Kantonalbank (Asset Management)3.9m2.13%+241.3k31 Jan 2026
UBS Fund Management (Switzerland) AG3.3m1.80%−103.6k28 Feb 2026
Rossier, Mari & Associates Ltd.2m1.07%+150k31 Jan 2026
BlackRock Institutional Trust Company, N.A.1.2m0.67%+157.3k28 Feb 2026
BlackRock Advisors (UK) Limited769k0.42%+54.5k28 Feb 2026
Pictet Asset Management Ltd.673.2k0.37%+33.3k30 Nov 2025
Banque Cantonale Vaudoise630.8k0.35%+120k28 Feb 2026
DWS Investment GmbH378.9k0.21%+25k28 Feb 2026
Swiss Life Asset Management313.2k0.17%+34.3k31 Jan 2026
Storebrand Kapitalforvaltning AS277.3k0.15%—31 Jan 2026

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.