Nako ea tumellano ke eng?
Nako ke tekanyo e lekantsoeng ka nako ea karolelano ea phallo ea chelete ea sesebelisoa sa lichelete se lefang phaello. Bahoebi ba li-bond ba sebelisa nako ho lekanya kutloisiso ea sekhahla sa phaello ea letlotlo. Mefuta ea likhakanyo tsa nako e kenyelletsa Macaulay, Modified le Effective durations.