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.
2023-01-03 09:34:00 Tuesday ET

USPTO fintech patent protection and accreditation As of early-January 2023, the U.S. Patent and Trademark Office (USPTO) has approved
2022-04-05 17:39:00 Tuesday ET

Corporate diversification theory and evidence A recent strand of corporate diversification literature spans at least three generations. The first generat
2018-07-25 11:41:00 Wednesday ET

President Trump hails and touts America's new high real GDP economic growth in 2018Q2. The U.S. is now a $20+ trillion economy, and America hits this mi
2024-07-31 09:28:00 Wednesday ET

In the modern monetary system, each new CBDC helps anchor public trust in money in support of economic welfare, especially in a cashless society. In our
2022-09-25 09:34:00 Sunday ET

Main reasons for share repurchases Temporary market undervaluation often induces corporate incumbents to initiate a share repurchase program to boost the
2019-08-14 10:31:00 Wednesday ET

Netflix suffers its first major loss of U.S. subscribers due to the recent price hikes. The company adds only 2.7 million new subscribers in 2019Q2 in stark