Recently, the concept of "blue finance" was introduced to the world. Blue finance envisages that ocean firms issue financial instruments to obtain funds and take necessary measures to make the ocean environment blue. To measure the blueness of a firm, we estimate the blueness index using GHG...

This study proposes a theoretical model for measuring the greenness factors of a firm. We develop the multifactor utility function and find that the proportion of investment in green bonds is higher if greenness factors account for by a firm and vice versa. Moreover, we further develop the...