Value

AAA-A: rho=0.24; BBB: rho=0.20; BB-B: rho=0.15; CCC+: rho=0.12

sourceBasel II IRB single-factor model
derivationpublished_source
qualitypublished
regulatory frameworksBasel II IRB
set2026-05-25
last reviewed2026-05-25
next review due2026-06-30

Notes

Inverse-rating correlation pattern; used in portfolio credit VaR + capital.