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.
2018-04-05 07:42:00 Thursday ET

CNBC news anchor Becky Quick interviews Berkshire Hathaway's Warren Buffett in light of the recent stock market gyrations and movements. Warren Buffett
2020-03-05 08:28:00 Thursday ET

The Stanford computer science overlords Larry Page and Sergey Brin design and develop Google as an Internet search company. Janet Lowe (2009) Google s
2018-07-13 09:41:00 Friday ET

Yale economist Stephen Roach warns that America has much to lose from the current trade war with China for a few reasons. First, America is highly dependent
2022-02-02 10:33:00 Wednesday ET

Our proprietary alpha investment model outperforms most stock market indices from 2017 to 2022. As of early-January 2023, the U.S. Patent and Trademark O
2018-05-23 09:41:00 Wednesday ET

Many U.S. large public corporations spend their tax cuts on new dividend payout and share buyback but not on new job creation and R&D innovation. These
2019-12-19 14:43:00 Thursday ET

JPMorgan Chase CEO Jamie Dimon views wealth inequality as a major economic problem in America. Dimon now warns that the rich Americans have been getting wea