Le Anh Minh Nguyen, Huong Pham, Moganatharsa Ganeshalingam, Raymond Thomas
{"title":"A multimodal analytical approach is important in accurately assessing terpene composition in edible essential oils","authors":"Le Anh Minh Nguyen, Huong Pham, Moganatharsa Ganeshalingam, Raymond Thomas","doi":"10.2139/ssrn.4710351","DOIUrl":"https://doi.org/10.2139/ssrn.4710351","url":null,"abstract":"","PeriodicalId":507782,"journal":{"name":"SSRN Electronic Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141145583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Andrew Atkeson, Jonathan Heathcote, Fabrizio Perri
{"title":"There is No Excess Volatility Puzzle","authors":"Andrew Atkeson, Jonathan Heathcote, Fabrizio Perri","doi":"10.3386/w32481","DOIUrl":"https://doi.org/10.3386/w32481","url":null,"abstract":"","PeriodicalId":507782,"journal":{"name":"SSRN Electronic Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141139142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We separately identify the role of risk preferences and frictions in portfolio choice. Individuals may choose not to participate in the stock market because of non-standard preferences (e.g. loss aversion) or frictions impacting their choices (e.g. participation costs). We overcome this identification problem by using variation in the default asset allocation of 401(k) plans and estimate that, absent frictions, 94% of investors would prefer holding stocks in their retirement account with an equity share of retirement wealth that declines over the life cycle, which differs markedly from their observed behavior. We use this variation to estimate a structural life cycle portfolio choice model with Epstein-Zin preferences and find the evidence consistent with a relative risk aversion of around 2.1. This estimate is significantly lower than most estimates in the life cycle portfolio choice literature and highlights how choice frictions can hamper the identification of risk preferences. *MIT Sloan. Corresponding emails: tahac@mit.edu; tdesilva@mit.edu. First draft: November 18th, 2021. We thank Hunt Allcott, Joesph Briggs (discussant), Sylvain Catherine (discussant), Nuno Clara, Cary Frydman (discussant), Francisco Gomes (discussant), Debbie Lucas, Christopher Palmer, Jonathan Parker, Antoinette Schoar, Frank Schilbach, Larry Schmidt, Eric So, David Sraer, David Thesmar, Adrien Verdelhan, Toni Whited, and audience members at MIT Economics, MIT Sloan, Duke Fuqua, University of Illinois at Urbana-Champaign, Chicago Fed, Princeton, 2022 NBER Behavioral Finance Spring Meeting, 2022 CEPR Conference on Household Finance, 2022 Western Finance Association Annual Meeting, 2022 Society for Economic Dynamics Annual Meeting, and the 2022 Texas Finance Festival for their insightful comments. We also thank the data provider, a large U.S. financial institution, for making available the data used in this paper, helpful discussions, and technical support. Many households do not participate in the stock market, including households with significant financial wealth (Mankiw and Zeldes 1991; Guiso, Haliassos, and Jappelli 2002; Campbell 2006). This limited participation in the stock market is difficult to reconcile with standard economic theory, which predicts that all investors should hold at least a small amount of stocks in the presence of a positive equity premium (e.g. Merton 1969; Campbell and Viceira 2001).1 In principle, an investor may choose to not allocate their financial wealth to the stock market for two reasons. First, this investor may prefer holding safe assets over stocks (e.g. due to loss aversion, ambiguity aversion, or pessimistic beliefs about returns). Alternatively, this investor may prefer holding stocks over safe assets, but not participate due to frictions. These frictions could include the real costs of setting up and maintaining a brokerage account or the cognitive cost of making a financial plan and paying attention. Although these two explana
{"title":"What Drives Investors' Portfolio Choices? Separating Risk Preferences from Frictions","authors":"Taha Choukhmane, Tim de Silva","doi":"10.3386/w32476","DOIUrl":"https://doi.org/10.3386/w32476","url":null,"abstract":"We separately identify the role of risk preferences and frictions in portfolio choice. Individuals may choose not to participate in the stock market because of non-standard preferences (e.g. loss aversion) or frictions impacting their choices (e.g. participation costs). We overcome this identification problem by using variation in the default asset allocation of 401(k) plans and estimate that, absent frictions, 94% of investors would prefer holding stocks in their retirement account with an equity share of retirement wealth that declines over the life cycle, which differs markedly from their observed behavior. We use this variation to estimate a structural life cycle portfolio choice model with Epstein-Zin preferences and find the evidence consistent with a relative risk aversion of around 2.1. This estimate is significantly lower than most estimates in the life cycle portfolio choice literature and highlights how choice frictions can hamper the identification of risk preferences. *MIT Sloan. Corresponding emails: tahac@mit.edu; tdesilva@mit.edu. First draft: November 18th, 2021. We thank Hunt Allcott, Joesph Briggs (discussant), Sylvain Catherine (discussant), Nuno Clara, Cary Frydman (discussant), Francisco Gomes (discussant), Debbie Lucas, Christopher Palmer, Jonathan Parker, Antoinette Schoar, Frank Schilbach, Larry Schmidt, Eric So, David Sraer, David Thesmar, Adrien Verdelhan, Toni Whited, and audience members at MIT Economics, MIT Sloan, Duke Fuqua, University of Illinois at Urbana-Champaign, Chicago Fed, Princeton, 2022 NBER Behavioral Finance Spring Meeting, 2022 CEPR Conference on Household Finance, 2022 Western Finance Association Annual Meeting, 2022 Society for Economic Dynamics Annual Meeting, and the 2022 Texas Finance Festival for their insightful comments. We also thank the data provider, a large U.S. financial institution, for making available the data used in this paper, helpful discussions, and technical support. Many households do not participate in the stock market, including households with significant financial wealth (Mankiw and Zeldes 1991; Guiso, Haliassos, and Jappelli 2002; Campbell 2006). This limited participation in the stock market is difficult to reconcile with standard economic theory, which predicts that all investors should hold at least a small amount of stocks in the presence of a positive equity premium (e.g. Merton 1969; Campbell and Viceira 2001).1 In principle, an investor may choose to not allocate their financial wealth to the stock market for two reasons. First, this investor may prefer holding safe assets over stocks (e.g. due to loss aversion, ambiguity aversion, or pessimistic beliefs about returns). Alternatively, this investor may prefer holding stocks over safe assets, but not participate due to frictions. These frictions could include the real costs of setting up and maintaining a brokerage account or the cognitive cost of making a financial plan and paying attention. Although these two explana","PeriodicalId":507782,"journal":{"name":"SSRN Electronic Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141137177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Gendered Change: 150 Years of Transformation in US Hours","authors":"L. R. Ngai, Claudia Olivetti, Barbara Petrongolo","doi":"10.3386/w32475","DOIUrl":"https://doi.org/10.3386/w32475","url":null,"abstract":"","PeriodicalId":507782,"journal":{"name":"SSRN Electronic Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141141433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dynamic Collective Action and the Power of Large Numbers","authors":"Marco Battaglini, Thomas Palfrey","doi":"10.3386/w32473","DOIUrl":"https://doi.org/10.3386/w32473","url":null,"abstract":"","PeriodicalId":507782,"journal":{"name":"SSRN Electronic Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141145488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Old Moats for New Models: Openness, Control, and Competition in Generative AI","authors":"Pierre Azoulay, Joshua Krieger, Abhishek Nagaraj","doi":"10.3386/w32474","DOIUrl":"https://doi.org/10.3386/w32474","url":null,"abstract":"","PeriodicalId":507782,"journal":{"name":"SSRN Electronic Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141145079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lorenzo Caliendo, Marcelo Dolabella, Mauricio Mesquita Moreira, Matthew Murillo, F. Parro
{"title":"Voluntary Emission Restraints in Developing Economies: The Role of Trade Policy","authors":"Lorenzo Caliendo, Marcelo Dolabella, Mauricio Mesquita Moreira, Matthew Murillo, F. Parro","doi":"10.2139/ssrn.4833936","DOIUrl":"https://doi.org/10.2139/ssrn.4833936","url":null,"abstract":"","PeriodicalId":507782,"journal":{"name":"SSRN Electronic Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141137337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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