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.
2019-11-21 11:34:00 Thursday ET

Berkeley macro economist Brad DeLong sees no good reasons for an imminent economic recession with mass unemployment and even depression. The current U.S. ec
2025-10-08 11:34:00 Wednesday ET

Stock Synopsis: With a new Python program, we use, adapt, apply, and leverage each of the mainstream Gemini Gen AI models to conduct this comprehensive fund
2018-09-21 09:41:00 Friday ET

Former World Bank and IMF chief advisor Anne Krueger explains why the Trump administration's current tariff tactics undermine the multilateral global tr
2017-12-09 08:37:00 Saturday ET

Michael Bloomberg, former NYC mayor and media entrepreneur, criticizes that the Trump administration's tax reform is a trillion dollar blunder because i
2018-10-11 08:44:00 Thursday ET

Treasury bond yield curve inversion often signals the next economic recession in America. In fact, U.S. bond yield curve inversion correctly predicts the da
2019-02-01 15:35:00 Friday ET

Our proprietary alpha investment model outperforms the major stock market benchmarks such as S&P 500, MSCI, Dow Jones, and Nasdaq. We implem