{"title":"论降低估值不确定性风险:\"市场不完备累积状态\"的可靠代理的重要性","authors":"Oghenovo Adewale Obrimah","doi":"10.21314/jrmv.2023.007","DOIUrl":null,"url":null,"abstract":"Suppose the same set of assets enters a primary market in either a monotone decreasing or monotone increasing sequence of asset risk. This study shows that the errors that attend the valuations of those assets in the context of the two different orderings are noncoincident. The sequence in which new assets arrive within a market is thus a source of valuation uncertainty risk. The formal theory shows that both asset risk and valuation uncertainty risk are mitigated if investors condition valuations of new assets on a dynamically evolving intertemporal mechanism that has parameterization as an explicit robust measure for the “cumulative state of [market] incompleteness” (CSI). Theoretically, relative to every preceding state, the CSI is a sufficient measure for the severity of market-conditioned valuation uncertainty risk. Although the derivation of a specific measure for the CSI is beyond the scope of this study, the formal theory arrives at three mathematically specified risk metrics that approximate the properties of the CSI. Let q and M denote, respectively, the individual initial public offering quality and the CSI. The CSI has the explicit parameterization Mt = ⋃ts=1(qs | Ms-1), as is expected of any well-defined measure, is self-propagating.","PeriodicalId":43447,"journal":{"name":"Journal of Risk Model Validation","volume":"9 1","pages":"0"},"PeriodicalIF":0.4000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"On the mitigation of valuation uncertainty risk: the importance of a robust proxy for the “cumulative state of market incompleteness”\",\"authors\":\"Oghenovo Adewale Obrimah\",\"doi\":\"10.21314/jrmv.2023.007\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Suppose the same set of assets enters a primary market in either a monotone decreasing or monotone increasing sequence of asset risk. This study shows that the errors that attend the valuations of those assets in the context of the two different orderings are noncoincident. The sequence in which new assets arrive within a market is thus a source of valuation uncertainty risk. The formal theory shows that both asset risk and valuation uncertainty risk are mitigated if investors condition valuations of new assets on a dynamically evolving intertemporal mechanism that has parameterization as an explicit robust measure for the “cumulative state of [market] incompleteness” (CSI). Theoretically, relative to every preceding state, the CSI is a sufficient measure for the severity of market-conditioned valuation uncertainty risk. Although the derivation of a specific measure for the CSI is beyond the scope of this study, the formal theory arrives at three mathematically specified risk metrics that approximate the properties of the CSI. Let q and M denote, respectively, the individual initial public offering quality and the CSI. The CSI has the explicit parameterization Mt = ⋃ts=1(qs | Ms-1), as is expected of any well-defined measure, is self-propagating.\",\"PeriodicalId\":43447,\"journal\":{\"name\":\"Journal of Risk Model Validation\",\"volume\":\"9 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.4000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Risk Model Validation\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.21314/jrmv.2023.007\",\"RegionNum\":4,\"RegionCategory\":\"经济学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"BUSINESS, FINANCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Risk Model Validation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21314/jrmv.2023.007","RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"BUSINESS, FINANCE","Score":null,"Total":0}
On the mitigation of valuation uncertainty risk: the importance of a robust proxy for the “cumulative state of market incompleteness”
Suppose the same set of assets enters a primary market in either a monotone decreasing or monotone increasing sequence of asset risk. This study shows that the errors that attend the valuations of those assets in the context of the two different orderings are noncoincident. The sequence in which new assets arrive within a market is thus a source of valuation uncertainty risk. The formal theory shows that both asset risk and valuation uncertainty risk are mitigated if investors condition valuations of new assets on a dynamically evolving intertemporal mechanism that has parameterization as an explicit robust measure for the “cumulative state of [market] incompleteness” (CSI). Theoretically, relative to every preceding state, the CSI is a sufficient measure for the severity of market-conditioned valuation uncertainty risk. Although the derivation of a specific measure for the CSI is beyond the scope of this study, the formal theory arrives at three mathematically specified risk metrics that approximate the properties of the CSI. Let q and M denote, respectively, the individual initial public offering quality and the CSI. The CSI has the explicit parameterization Mt = ⋃ts=1(qs | Ms-1), as is expected of any well-defined measure, is self-propagating.
期刊介绍:
As monetary institutions rely greatly on economic and financial models for a wide array of applications, model validation has become progressively inventive within the field of risk. The Journal of Risk Model Validation focuses on the implementation and validation of risk models, and aims to provide a greater understanding of key issues including the empirical evaluation of existing models, pitfalls in model validation and the development of new methods. We also publish papers on back-testing. Our main field of application is in credit risk modelling but we are happy to consider any issues of risk model validation for any financial asset class. The Journal of Risk Model Validation considers submissions in the form of research papers on topics including, but not limited to: Empirical model evaluation studies Backtesting studies Stress-testing studies New methods of model validation/backtesting/stress-testing Best practices in model development, deployment, production and maintenance Pitfalls in model validation techniques (all types of risk, forecasting, pricing and rating)