It is well-known in empirical finance that virtually all asset returns, whether monthly,daily, or intraday, are heavy-tailed and, particularly for stock returns, are mildly but oftensignificantly negatively skewed. However, the tail indices, or maximally existing moments ofthe returns, can...

When a policymaker is better informed than the public, public beliefs about the hidden informationemerge as additional state variables, managed by the policymaker. General methodsare presented to compute optimal commitment and discretion policies.Under commitment, policy is additive in two...