Convertible debentures are different from convertible bonds because debentures are unsecured; in the event of bankruptcy the debentures would be paid after other fixed income holders. The convertible feature is factored into the calculation of the diluted per-share metrics as if the debentures had been converted. Therefore, a higher share count reduces metrics such as earnings per share, which is referred to as dilution.
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конвертована (в акції) облігація (не забезпечується активами емітента)