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

Federal Reserve Chairman Jerome Powell indicates that the central bank would resume Treasury purchases to avoid turmoil in money markets.

James Campbell

2019-11-09 16:38:00 Saturday ET

Federal Reserve Chairman Jerome Powell indicates that the central bank would resume Treasury purchases to avoid turmoil in money markets.

Federal Reserve Chairman Jerome Powell indicates that the central bank would resume Treasury purchases to avoid turmoil in money markets. Powell indicates t

+See More

CNBC news anchor Becky Quick interviews Warren Buffett in early-2019.

James Campbell

2019-04-07 13:39:00 Sunday ET

CNBC news anchor Becky Quick interviews Warren Buffett in early-2019.

CNBC news anchor Becky Quick interviews Warren Buffett in early-2019. Buffett explains the fact that book value fluctuations are a metric that has lost rele

+See More

Bank failure resolution and financial risk management: Silicon Valley Bank, Signature Bank, and First Republic Bank.

Dan Rochefort

2023-05-27 11:30:00 Saturday ET

Bank failure resolution and financial risk management: Silicon Valley Bank, Signature Bank, and First Republic Bank.

Bank failure resolution and financial risk management: Silicon Valley Bank, Signature Bank, and First Republic Bank.   What are the main root cau

+See More

Ivanka Trump and Treasury Secretary Steven Mnuchin press the case for GOP tax legislation.

Jonah Whanau

2017-10-15 07:38:00 Sunday ET

Ivanka Trump and Treasury Secretary Steven Mnuchin press the case for GOP tax legislation.

Ivanka Trump and Treasury Secretary Steven Mnuchin both press the case for GOP tax legislation as economic relief for the middle-class without substantial t

+See More

North Korean leader and president Kim Jong-Un seeks peaceful resolution and denuclearization on the Korean Peninsula.

Olivia London

2018-04-11 09:37:00 Wednesday ET

North Korean leader and president Kim Jong-Un seeks peaceful resolution and denuclearization on the Korean Peninsula.

North Korean leader and president Kim Jong-Un seeks peaceful resolution and denuclearization on the Korean Peninsula. When *peace* comes to shove, Asia

+See More

U.S. government shuts down again because House Democrats refuse to spend $5 billion on the border wall.

Amy Hamilton

2019-01-19 12:38:00 Saturday ET

U.S. government shuts down again because House Democrats refuse to spend $5 billion on the border wall.

U.S. government shuts down again because House Democrats refuse to spend $5 billion on the border wall that would give President Trump great victory on his

+See More