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.
2016-10-19 00:00:00 Wednesday ET

India's equivalent to Warren Buffett in America, Rakesh Jhunjhunwala, offers several key lessons for stock market investors: When the press o
2018-05-15 08:40:00 Tuesday ET

Net neutrality rules continue to revolve around the Trump administration's current IT agenda of 5G telecom transformation. Republican Senate passes the
2018-11-01 08:36:00 Thursday ET

Ford and Baidu team up to test autonomous cars in China. For the next few years, Ford and Baidu plan to collaborate on the car design and user acceptance te
2020-06-24 09:32:00 Wednesday ET

Several business founders and entrepreneurs take low risks with high potential rewards to buck the conventional wisdom. Renee Martin and Don Martin (2010
2019-12-07 11:30:00 Saturday ET

China turns on its 5G telecom networks in the hot pursuit of global tech supremacy. China Telecom, China Unicom, and China Mobile disclose 5G fees of $18-$2
2017-06-03 05:35:00 Saturday ET

Fundamental value investors, who intend to manage their stock portfolios like Warren Buffett and Peter Lynch, now find it more difficult to ferret out indiv