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

Goop Founder and CEO Gwyneth Paltrow serves as a great inspiration for female entrepreneurs.

Laura Hermes

2019-12-01 10:31:00 Sunday ET

Goop Founder and CEO Gwyneth Paltrow serves as a great inspiration for female entrepreneurs.

Goop Founder and CEO Gwyneth Paltrow serves as a great inspiration for female entrepreneurs. Paltrow designs Goop as an online newsletter, and this newslett

+See More

The Chinese Xi administration may choose to leverage its state dominance of rare-earth elements to better balance the current Sino-U.S. trade war.

Dan Rochefort

2019-06-13 10:26:00 Thursday ET

The Chinese Xi administration may choose to leverage its state dominance of rare-earth elements to better balance the current Sino-U.S. trade war.

The Chinese Xi administration may choose to leverage its state dominance of rare-earth elements to better balance the current Sino-U.S. trade war. In recent

+See More

Smart firms and customers connect the continuous flow of lean production to the lean consumption of cost-effective minimum viable products.

Olivia London

2020-07-26 15:29:00 Sunday ET

Smart firms and customers connect the continuous flow of lean production to the lean consumption of cost-effective minimum viable products.

Firms and customers create value and wealth together by joining the continual flow of small batches of lean production to the lean consumption of cost-effec

+See More

Commerce Secretary Wilbur Ross suggests that 5G remains a U.S. top technology priority in light of the Sprint-T-Mobile telecom merger.

Amy Hamilton

2018-05-04 06:29:00 Friday ET

Commerce Secretary Wilbur Ross suggests that 5G remains a U.S. top technology priority in light of the Sprint-T-Mobile telecom merger.

Commerce Secretary Wilbur Ross suggests that 5G remains a U.S. top technology priority in light of the telecom merger proposal between Sprint and T-Mobile a

+See More

Timothy Geithner shares his reflections on the post-crisis macro financial stress tests for U.S. banks.

Fiona Sydney

2023-04-07 12:29:00 Friday ET

Timothy Geithner shares his reflections on the post-crisis macro financial stress tests for U.S. banks.

Timothy Geithner shares his reflections on the post-crisis macro financial stress tests for U.S. banks. Timothy Geithner (2014)   Macrofinanci

+See More

President Trump considers imposing retaliatory economic sanctions on Chinese products.

Peter Prince

2018-01-10 08:40:00 Wednesday ET

President Trump considers imposing retaliatory economic sanctions on Chinese products.

President Trump considers imposing retaliatory economic sanctions on Chinese products and services in direct response to China's theft and infringement

+See More