Library

Home > Library > Algorithmic credit portfolio segmentation

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.

Blog+More

It can be practical for the U.S. to impose the 2% Warren wealth tax on the rich.

Dan Rochefort

2019-02-03 13:39:00 Sunday ET

It can be practical for the U.S. to impose the 2% Warren wealth tax on the rich.

It can be practical for the U.S. to impose the 2% wealth tax on the rich. Democratic Senator Elizabeth Warren proposes a 2% wealth tax on the richest Americ

+See More

The Trump administration mulls over antitrust actions against Amazon, Facebook, and Google.

Monica McNeil

2018-11-19 09:38:00 Monday ET

The Trump administration mulls over antitrust actions against Amazon, Facebook, and Google.

The Trump administration mulls over antitrust actions against Amazon, Facebook, and Google. President Trump indicates that the $5 billion fine against Googl

+See More

Corporate cash management

Jacob Miramar

2022-03-25 09:34:00 Friday ET

Corporate cash management

Corporate cash management The empirical corporate finance literature suggests four primary motives for firms to hold cash. These motives include the tra

+See More

Treasury Secretary Steven Mnuchin welcomes a weak U.S. dollar amid pervasive fears of an open trade war between America and China.

James Campbell

2018-01-15 07:35:00 Monday ET

Treasury Secretary Steven Mnuchin welcomes a weak U.S. dollar amid pervasive fears of an open trade war between America and China.

Treasury Secretary Steven Mnuchin welcomes a weak U.S. dollar amid pervasive fears of an open trade war between America and China. At the World Economic For

+See More

Colin Camerer, George Loewenstein, and Matthew Rabin assess the recent advances in the behavioral economic science.

James Campbell

2023-09-14 09:28:00 Thursday ET

Colin Camerer, George Loewenstein, and Matthew Rabin assess the recent advances in the behavioral economic science.

Colin Camerer, George Loewenstein, and Matthew Rabin assess the recent advances in the behavioral economic science. Colin Camerer, George Loewenstei

+See More

The Economist suggests that the world has learned few lessons of the global financial crisis from 2008 to 2009.

Becky Berkman

2018-09-07 07:33:00 Friday ET

The Economist suggests that the world has learned few lessons of the global financial crisis from 2008 to 2009.

The Economist re-evaluates the realistic scenario that the world has learned few lessons of the global financial crisis from 2008 to 2009 over the past deca

+See More