Consider the basic setup of the Diamond-Dybvig (1983) model. Specifically, there are three periods, denoted t = 0, 1, 2, a single consumption good, and an illiquid investment opportunity that pays gross return 1 if liquidated at t = 1, or gross return 2.2 if liquidated at t = 2. There are 500 people in the economy, each endowed with 1 unit of the consumption good at t = 0. At t = 1, exactly 200 will randomly realize that they need to consume at t = 1 (the early consumers), the remaining 300 people will need to consume at t = 2 (the late consumers). The utility derived from consumption is 1 − (1/c1) 2 for early consumers, 1−(1/c2) 2 for late consumers, where the subscript denotes the time of consumption. Suppose a bank can offer an asset that is more liquid, with gross returns Rd 1 = 1.33 and Rd 2 = 1.71 (depending on the time of liquidation). (i) Calculate the bank’s profit after t = 2. In other words, what amount of funds remains at the bank once all depositors have withdrawn? Now the bank offers a different asset instead, one that pays the same return, Rd , to all depositors (i.e., regardless of the time of liquidation). (vi) What is the highest gross return Rd that the bank can offer all depositors? (ii) Now suppose the late consumers pretend to be impatient and withdraw early. How many people can be paid before the bank runs out of funds?

Essentials of Business Analytics (MindTap Course List)

2nd Edition

ISBN:9781305627734

Author:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson

Publisher:Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson

Chapter15: Decision Analysis

Section: Chapter Questions

Problem 24P: Translate the following monetary payoffs into utilities for a decision maker whose utility function...

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Consider the basic setup of the Diamond-Dybvig (1983) model. Specifically, there are three periods, denoted t = 0, 1, 2, a single consumption good, and an illiquid investment opportunity that pays gross return 1 if liquidated at t = 1, or gross return 2.2 if liquidated at t = 2. There are 500 people in the economy, each endowed with 1 unit of the consumption good at t = 0. At t = 1, exactly 200 will randomly realize that they need to consume at t = 1 (the early consumers), the remaining 300 people will need to consume at t = 2 (the late consumers). The utility derived from consumption is 1 − (1/c1) 2 for early consumers, 1−(1/c2) 2 for late consumers, where the subscript denotes the time of consumption. Suppose a bank can offer an asset that is more liquid, with gross returns Rd 1 = 1.33 and Rd 2 = 1.71 (depending on the time of liquidation). (i) Calculate the bank’s profit after t = 2. In other words, what amount of funds remains at the bank once all depositors have withdrawn? Now the bank offers a different asset instead, one that pays the same return, Rd , to all depositors (i.e., regardless of the time of liquidation). (vi) What is the highest gross return Rd that the bank can offer all depositors? (ii) Now suppose the late consumers pretend to be impatient and withdraw early. How many people can be paid before the bank runs out of funds?

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