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.
2017-11-27 07:39:00 Monday ET

Is it anti-competitive and illegal for passive indexers and mutual funds to place large stock bets in specific industries with high market concentration? Ha
2020-10-13 08:27:00 Tuesday ET

Agile lean enterprises strive to design radical business models to remain competitive in the face of nimble startups and megatrends. Carsten Linz, Gunter
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
2019-01-12 10:33:00 Saturday ET

With majority control, House Democrats pass 2 bills to reopen the U.S. government without funding the Trump border wall. President Trump makes a surprise Wh
2023-06-19 10:31:00 Monday ET

A brief biography of Dr Andy Yeh (PhD, MFE, MMS, BMS, FRM, and USPTO patent accreditation) Dr Andy Yeh is responsible for ensuring maximum sustainable me
2019-10-27 17:37:00 Sunday ET

International climate change can cause an adverse impact on long-term real GDP economic growth. USC climate change economist Hashem Pesaran and his co-autho