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.
2023-10-14 10:32:00 Saturday ET

Jonathan Baker frames the current debate over antitrust merger review and enforcement in America. Jonathan Baker (2019) The antitrust paradi
2019-07-05 09:32:00 Friday ET

Warwick macroeconomic expert Roger Farmer proposes paying for social welfare programs with no tax hikes. The U.S. government pension and Medicare liabilitie
2018-10-25 10:36:00 Thursday ET

Trump tariffs begin to bite U.S. corporate profits from Ford and Harley-Davidson to Caterpillar and Walmart etc. U.S. corporate profit growth remains high a
2022-11-30 09:26:00 Wednesday ET

Climate change and ESG woke capitalism In recent times, the Biden administration has signed into law a $375 billion program to better balance the economi
2019-01-05 11:39:00 Saturday ET

Reuters polls show that most Americans blame President Trump for the recent U.S. government shutdown. President Trump remains adamant about having to shut d
2020-03-05 08:28:00 Thursday ET

The Stanford computer science overlords Larry Page and Sergey Brin design and develop Google as an Internet search company. Janet Lowe (2009) Google s