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Financial Assets at Fair Value Through Other Comprehensive Income (FVTOCI) | 12 Months Ended
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Dec. 31, 2019
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Financial Assets at Fair Value Through Other Comprehensive Income (FVTOCI) |
8. | FINANCIAL ASSETS AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME (FVTOCI)
|  | December 31
|  | 2018 |  | 2019
|  | NT$ |  | NT$ |  | US$ (Note 4)
Investments in equity instruments at FVTOCI |  | $ | 580,399 |  |  | $ | 755,903 |  |  | $ | 25,272 |
Investments in debt instruments at FVTOCI |  |  | 1,016,924 |  |  |  | 1,014,872 |  |  |  | 33,931 |
|  | $ | 1,597,323 |  |  | $ | 1,770,775 |  |  | $ | 59,203 |
| a. | Investments in equity instruments at FVTOCI
|  | December 31
|  | 2018 |  | 2019
|  | NT$ |  | NT$ |  | US$ (Note 4)
Unquoted ordinary shares |  | $ | 532,047 |  |  | $ | 565,028 |  |  | $ | 18,891 |
Unquoted preferred shares |  |  | 8,683 |  |  |  | 158,718 |  |  |  | 5,306 |
Limited partnership |  |  | 39,669 |  |  |  | 32,157 |  |  |  | 1,075 |
|  | $ | 580,399 |  |  | $ | 755,903 |  |  | $ | 25,272 |
| b. | Investments in debt instruments at FVTOCI
|  | December 31
|  | 2018 |  | 2019
|  | NT$ |  | NT$ |  | US$ (Note 4)
Unsecured subordinate corporate bonds |  | $ | 1,016,924 |  |  | $ | 1,014,872 |  |  | $ | 33,931 |
In June 2016, the Group purchased 1,000 units of perpetual unsecured subordinate corporate bonds in the amount of NT$1,000,000 thousand. The corporate bonds are in denomination of NT$1,000 thousand (US$33 thousand) with annual interest rate at 3.5% as well as effective interest rate at 3.2% both as of December 31, 2018 and 2019.

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