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Equity - Shareholders' composition (Details) - shares | Dec. 31, 2017 | Dec. 31, 2016
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Shareholders' composition: |  |
Number of shares | 99,444,132,192 | 97,624,347,430
% of Equity Holding (in percentage) | 100.00% | 100.00%
Sociedad Administradora de la Obligacion Subordinada SAOS S.A. |  |
Shareholders' composition: |  |
Number of shares | 28,593,701,789 | 28,593,701,789
% of Equity Holding (in percentage) | 28.75% | 29.29%
LQ Inversiones Financieras S.A. |  |
Shareholders' composition: |  |
Number of shares | 26,733,861,635 | 25,694,731,690
% of Equity Holding (in percentage) | 26.88% | 26.32%
Sociedad Matriz del Banco de Chile S.A. |  |
Shareholders' composition: |  |
Number of shares | 12,138,567,444 | 12,138,561,434
% of Equity Holding (in percentage) | 12.21% | 12.43%
Other minority shareholders |  |
Shareholders' composition: |  |
Number of shares | 31,978,001,324 | 31,197,352,517
% of Equity Holding (in percentage) | 32.16% | 31.96%

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