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Earnings per share (Tables) | 12 Months Ended
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Dec. 31, 2022
Earnings per share [abstract] |
Schedule of Earnings per share |
|  | 2022 |  | 2022 |  | 2021 |  | 2021 |  | 2020 |
|  | Class A |  | Class B |  | Class A |  | Class B |  | Class A |
Weighted number of outstanding shares |  | 282,195,495 |  |  | 345,437,500 |  |  | 264,171,208 |  |  | 241,333,048 |  |  | 265,684,627 |  |
Weighted number of shares with dilutive effects |  | 2,354,500 |  |  | 6,891,423 |  |  | — |  |  | — |  |  | — |  |
Weighted number of outstanding shares (diluted and undiluted) |  | 284,549,995 |  |  | 352,328,923 |  |  | 264,171,208 |  |  | 241,333,048 |  |  | 265,684,627 |  |
Net income / (loss) (mCHF) |  | 51.4 |  |  | 6.3 |  |  | (156.0) |  |  | (14.2) |  |  | (27.5) |  |
Basic EPS (CHF) |  | 0.18 |  |  | 0.02 |  |  | (0.59) |  |  | (0.06) |  |  | (0.10) |  |
Diluted EPS (CHF) |  | 0.18 |  |  | 0.02 |  |  | (0.59) |  |  | (0.06) |  |  | (0.10) |  |

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- Definition The disclosure of earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2022-03-24 -Paragraph 66 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2022-en-r&anchor=para_66&doctype=Standard -URIDate 2022-03-24 + Details
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