G2TT
来源类型Discussion paper
规范类型论文
来源IDDP15573
DP15573 Self-Fulfilling Prophecies, Quasi Non-Ergodicity & Wealth Inequality
Roger Farmer; Jean-Philippe Bouchaud
发表日期2022-04-27
出版年2022
语种英语
摘要We construct a model of an exchange economy in which agents trade assets contingent on an observable signal, the probability of which depends on public opinion. The agents in our model are replaced occasionally and each person updates beliefs in response to observed outcomes. We show that the distribution of the observed signal is described by a quasi-non-ergodic process and that people continue to disagree with each other forever. Interestingly, these disagreements generate large wealth inequalities that arise from the multiplicative nature of wealth dynamics which makes successful bold bets highly pro table. People who agree with the market belief have a low expected subjective gain from trading. People who disagree may either become spectacularly rich, or spectacularly poor. The flip side is that such wealth inequalities lead to persistent discrepancies between market implied probabilities and true probabilities.
主题Financial Economics
URLhttps://cepr.org/publications/dp15573-1
来源智库Centre for Economic Policy Research (United Kingdom)
资源类型智库出版物
条目标识符http://119.78.100.153/handle/2XGU8XDN/546270
推荐引用方式
GB/T 7714
Roger Farmer,Jean-Philippe Bouchaud. DP15573 Self-Fulfilling Prophecies, Quasi Non-Ergodicity & Wealth Inequality. 2022.
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