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.
2017-05-19 09:39:00 Friday ET

FAMGA stands for Facebook, Apple, Microsoft, Google, and Amazon. These tech giants account for more than 15% of market capitalization of the American stock
2018-08-25 12:33:00 Saturday ET

President Trump warns Google, Facebook, and Twitter that these tech titans now tread on troublesome territory. Specifically, Trump accuses Google of rigging
2019-06-25 10:34:00 Tuesday ET

Investing in stocks is the best way for people to become self-made millionaires. A recent Gallup poll indicates that only 37% of young Americans below the a
2019-06-17 11:25:00 Monday ET

To secure better economic arrangements with European Union, Jeremy Corbyn encourages Labour legislators to back a second referendum on Brexit. In recent tim
2020-11-01 11:21:00 Sunday ET

Artificial intelligence continues to push boundaries for several tech titans to sustain their central disruptive innovations, competitive moats, and first-m
2021-11-22 11:29:00 Monday ET

U.S. judiciary subcommittee delves into the market dominance of online platforms in terms of the antitrust, commercial, and administrative law in America.