On June 16, 2017, 107.3 million shares were listed on SIX.

In June 2017, 11.8 million shares issued through the conversion of the first tranche of the convertible loan provided by Cilag Holding AG, an indirect subsidiary of Johnson & Johnson, were listed. In November 2021, a second tranche of the convertible loan was converted and Cilag acquired 9.6 million shares of the Group. The remaining amount of the convertible loan may be converted into 29.1 million shares.

In July 2018, the Group privately placed 11.9 million new registered shares. Concurrently to the private placement of new shares, the Group issued CHF 200 million of senior unsecured convertible bonds. The Bonds mature on July 17, 2024, and are convertible into 5.9 million registered shares of the Group.

In May 2020, the Group privately placed 11 million new registered shares.

In October 2020, the Group issued 23.8 million new registered shares.

In August 2021, the Group placed CHF 600 million senior unsecured convertible bonds due 2028 convertible into 19.0 million shares of the Group.

In January 2023, the Group created 10 million treasury shares.

Idorsia Ltd is part of the following indices: SPI, SPIEX, SPI ESG, SXSLI, SXI Life Sciences, SXI Bio+Medtech, and SSIRT.

Idorsia is traded under the following symbols: Reuters IDIA.S / Bloomberg IDIA:SW.

Covering analysts

Several financial institutions are covering Idorsia: 

Bank Analyst
Baader Helvea Leonildo Delgado
Bank of America Sachin Jain
Citi Peter Verdult
Deutsche Bank Emmanuel Papadakis
Goldman Sachs Rajan Sharma
H.C. Wainwright & Co Raghuram Selvaraju
Jefferies Brian Balchin
J.P. Morgan James Gordon
Kepler Cheuvreux Justine Telliez
Morgan Stanley Thibault Boutherin
Octavian Laura Pfeifer-Rossi
Van Lanschot Kempen Sushila Hernandez


IDIA SIX Swiss Exchange

2024-03-01 12:36:23 CET

1.99 CHF

-0.24 (-10.66 %)

Key Share Data

As of September 30, 2023
Shares outstanding

188.2 million

Closing share price CHF 2.59
Market capitalization CHF 488 million
52-week high CHF 17.85
52-week low CHF 2.44
YTD price change CHF -10.83 (-80.70%)
Average volume 617,882 shares
Free float 120.4 million shares

We will update this information together with the quarterly financial reporting.

Major Shareholders

As of September 30, 2023, the company has been notified of the following shareholdings or voting rights amounting to 3% or more of the company’s ordinary share capital:

Shareholder Position

Jean-Paul & Martine Clozel


Idorsia (treasury shares)


Cilag Holding AG


Rudolf Maag


UBS Fund Management


* Based on the share capital listed on SIX Swiss Exchange as of September 30, 2023

** As per the latest significant shareholder notifications available from the platform of the Disclosure Office of SIX Swiss Exchange

How To Buy Stock

Idorsia shares are traded on the SIX Swiss Stock Exchange. Investors wishing to become a shareholder in Idorsia should contact their local bank with the following information:

Reuters / Bloomberg: IDIA.S / IDIA:SW
Exchange: SIX, Switzerland
ISIN: CH0363463438
Swiss security number: 36 346 343

Bank staff will then be able to use this information to execute the transaction.

How To Register Shares

As part of our continued efforts towards good corporate governance we encourage shareholders to exercise their voting rights at the Annual General Meeting (AGM) of Idorsia Ltd.

The registration of shares is not mandatory under Swiss law. Therefore, registered shares are not automatically registered in our Share Register.

Idorsia has mandated areg.ch to administer its Share Register. Investors wishing to register their shares are kindly asked to contact their prime custodian (e.g. your banker or broker) to request a share registration form. After completing the form, your custodian will send it to areg.ch who will then take care of the registration. The custodian will receive a confirmation directly from areg.ch once the registration has taken place.