Home > Library > Algorithmic credit portfolio segmentation
Author Andy Yeh Alpha
This research article proposes a new algorithmic model for credit portfolio segmentation.
Description:
Under the new Basel bank capital framework, each bank must group its retail exposures into multiple segments with homogeneous risk characteristics. The U.S. regulatory agencies believe that each bank may use its internal risk models for the loan-level risk parameter estimates such as probability of default (PD) and loss given default (LGD) to group individual exposures into the resultant segments with homogeneous risk attributes. In stark contrast to the conventional decision-tree method, we propose a new algorithmic technique for retail consumer loan portfolio segmentation. This new technique identifies the optimal number of segments, sorts the individual loan exposures into the various segments, and then leads to the minimal degree of risk heterogeneity in comparison to the baseline equal-bin and quantile-bin schemes. Furthermore, we analyze the Monte Carlo implicit asset correlation values for the retail loan segments over time to help assess the implications for bank capital measurement. The best-fit method for retail credit portfolio segmentation results in some capital relief that serves as an economic incentive for the bank to invest in this alternative segmentation. This positive outcome accords with the core principle of statistical conservatism that the financial econometrician enshrines in the Basel regulatory requirements for bank capital measurement.
2018-08-13 12:39:00 Monday ET

White House chief economic adviser Larry Kudlow points out that the recent U.S. dollar strength shows a clear sign of investor confidence and optimism. Gree
2025-08-09 11:31:00 Saturday ET

Wharton e-commerce entrepreneurship professor Dr Karl Ulrich explains that many top-notch universities now provide massive open online courses (MOOCs) for m
2023-10-19 08:26:00 Thursday ET

World politics, economics, and new ideas from the Psychology of Money written by Morgan Housel We would like to provide both economic and non-economic th
2019-01-04 11:41:00 Friday ET

Chinese President Xi JingPing calls President Trump to reach Sino-American trade conflict resolution. Xi sends a congratulatory message to mark 40 years sin
2020-06-17 09:23:00 Wednesday ET

Successful founders focus on their continuous growth, passion, perseverance, and the collective wisdom of most team members. William Ferguson (2013) &
2018-09-27 11:41:00 Thursday ET

Michael Kors pays $2.3 billion to acquire the Italian elite fashion brand Versace. In accordance with Michael Kors's 5-year plan, the joint company grow