An axiomatic approach to default risk and model uncertainty in rating systems

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"We discuss different properties and representations of default #riskmeasures via monetary risk measures, families of related #tailrisk measures, and Choquet capacities. In a second step, we turn our focus on #defaultrisk measures, which are given as worst-case [#probability of #default] PDs and distorted PDs. The latter are frequently used in order to take into account model risk for the computation of #capitalrequirements through risk-weighted assets (#rwas), as demanded by the Capital Requirement #regulation (#crr). In this context, we discuss the impact of different default risk measures and margins of conservatism on the amount of risk-weighted assets."

Bank Countercyclical Capital Buffer Under the Liquidity Coverage Ratio Regulation

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This paper analyzes the relationship between the #baseliii countercyclical #capitalbuffer (#CCyB) and the #liquidity coverage #ratio (#lcr) requirement. The study shows that banks face a risk-liquidity trade-off with the LCR, affecting the CCyB required level to dampen cyclicality in #bank actual #capitalratios.

Bayesian Mixed‑Frequency Quantile Vector Autoregression: Eliciting Tail Risks of Monthly Us GDP

This paper proposes a novel mixed-frequency quantile vector autoregression (MF-QVAR) model that uses a #bayesian framework and multivariate asymmetric Laplace distribution to estimate missing low-frequency variables at higher frequencies. The proposed method allows for timely policy interventions by analyzing conditional quantiles for multiple variables of interest and deriving quantile-related #riskmeasures at high frequency. The model is applied to the US economy to #nowcast conditional quantiles of #gdp, providing insight into #var, Expected Shortfall, and distance among percentiles of real GDP nowcasts.

From Supply Chain Risk to Systemwide Disruptions

The #covid19 #pandemic revealed shortcomings in #supplychainmanagement and highlighted the need for rebuilding #supplychains for #resilience to respond to #systemwide #disruptions. This study outlines an approach to rebuilding supply chains for resilience, integrating innovation in areas critical to supply chain management. The authors focus on three areas deemed foundational to #supplychainresilience: forecasting, #supplychainrisk #riskmanagement, and product design.

Capturing ERM Lessons Learned from the Covid -19 Pandemic through Concept Mapping

The #covid19 #pandemic challenged every aspect of business and forced organizations to shift into #crisismode. The pandemic re-exposed issues associated with #siloedthinking in #riskmanagement. For organizations with inadequate #erm policies, plans, or procedures, this is a crucial time to reflect on improving their ERM processes through the capture and transfer of Covid-related lessons. This study explores how concept #riskmapping can be a valuable tool to structure lessons learned capture, ensure risk information is considered, and focus on ERM practice improvements.

The (Un)Limited Use of AI Segmentation in the Insurance Sector

This study examines the use of #artificialintelligence (#ai) and #bigdata data analytics by #insurers in #belgium for segmentation purposes to determine #claims#probability for prospective policyholders. The implementation of AI and big data analytics can benefit insurers by increasing the accuracy of #riskassessment. However, pervasive segmentation can have negative implications and potentially harm policyholders if their risk is incorrectly calculated. Existing restrictions in #insurance#regulations fall short of protecting policyholders from inaccuracies in risk assessments, potentially resulting in incorrect #premiums or conditions.

Gpt as a Financial Advisor

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"We assess the ability of #GPT … to serve as a financial robo-advisor for the masses, by combining a financial literacy test and an advice-utilization task (the Judge-Advisor System). #davinci and #chatgpt (variants of GPT) score 58% and 67% on the #financialliteracy literacy test, respectively, compared to a baseline of 31%. However, people overestimated GPT's performance (79.3%), and in a savings dilemma, they relied heavily on advice from GPT (WOA = 0.65). Lower subjective financial knowledge increased advice-taking. We discuss the risk of overreliance on current large #languagemodels models and how their utility to laypeople may change."

Incorporating Explicit General Inflation in the Estimation of the Non‑Life Claims Reserve

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"We consider two possible approaches to the problem of incorporating explicit general (i.e. economic) #inflation in the #non_life [#insurance] #claims reserve estimates and in corresponding reserve SCR, defined - as in #solvencyii - under the one year view. The #actuarial approach provides a simplified solution to the problem, obtained under the assumption of deterministic #interestrates and absence of inflation risk premia."