Book cover for Macroeconomics

Macroeconomics

Paul Krugman, Robin Wells

ISBN #9781464110375

4th Edition

265 Questions

16,351 Students Helped

Homework Questions

Summary

Learning Objectives

Key Concepts

Example Problems

Explanations

Common Mistakes

Summary

This section discusses the inherent trade-off between liquidity and rate of return that savers face, and details how banks have innovatively used maturity transformation to manage this balance. By converting short-term liabilities into long-term assets, banks enhance economic growth but also expose themselves to risks such as bank runs and financial panics. Understanding the distinction between depository banks and shadow banks, as well as the government interventions in place, is key for grasping the overall dynamics and challenges of modern banking.

Learning Objectives

1

Explain the trade-off between liquidity and rate of return in the context of saving and banking.

2

Describe the concept of maturity transformation and its role in bank operations.

3

Identify the risks associated with bank runs and financial panics, and evaluate government interventions aimed at mitigating these risks.

4

Differentiate between the operations of depository banks and shadow banks in managing liquidity and returns.

Key Concepts

CONCEPT

DEFINITION

Liquidity

The ease with which an asset can be converted into cash without significantly affecting its value.

Rate of Return

The gain or loss on an investment over a specified period, expressed as a percentage of the investment’s initial cost.

Maturity Transformation

The process by which banks convert short-term liabilities (like deposits) into long-term assets (like loans), optimizing the trade-off between liquidity and returns.

Depository Banks

Financial institutions that accept deposits and offer loans, performing maturity transformation by using short-term funds to finance long-term investments.

Shadow Banks

Non-depository financial institutions that provide services similar to traditional banks but without the same regulatory oversight.

Bank Runs

Situations in which a large number of bank customers withdraw their deposits simultaneously due to fears of the bank's insolvency.

Financial Panics

Widespread financial instability triggered by the rapid withdrawal of funds and loss of confidence in financial institutions, often leading to systemic crises.

Example Problems

Example 1

Which of the following are not examples of a vicious cycle of deleveraging? Explain. a. Your university decides to sell several commercial buildings in the middle of town in order to upgrade buildings on campus. b. A company decides to sell its large and valuable art collection because other asset prices on its balance sheet have fallen below a critical level, forcing creditors to call in their loans to the company because of provisions written into the original loan contract. c. A company decides to issue more stock in order to volunturily pay off some of its debt. d. $\Lambda$ shadow bank must sell its holdings of corporate bonds because falling asset prices have led to a default on the terms of its loans with some creditors.

Example 2

In the following figure showing the Case-Shiller U.S. Home Price Index from 2000 to 2010 , did housing prices peak before or after the financial crisis in the United States? Explain your answer:

Example 3

Figure $17-2$ tracks the unemployment rate in the years before and after the Panic of 1893 in the United States. the banking crisis of 1991 in Sweden, and the American financial crisis of 2008 . a. In Figure $17-2,$ how many years after the Panic of 1893 did unemployment peak in the United States? b. In Figure $17-2$, how many years after the banking crisis of 1991 did unemployment peak in Sweden? c. In Figure $17-2$, how many years after the banking crisis of 2008 did unemployment peak in the United States?

Example 4

In $2007-2009,$ the Federal Reserve, acting as a lender of last resort, stepped in to provide funds when private markets were unable to do so. The Fed also took over many banks. In $2007,$ it seized 3 banks; in $2008,$ it seized 25 banks; and in $2009,$ it seized 140 banks. Go to www.fdic.gov; under "Bank Closing Information," click on "Complete Failed Bank List." Then count the number of banks that the Federal Reserve has seized so far this year. Have bank failures decreased since the crisis in $2009 ?$

Example 5

During the financial crisis in October 2008 , the federal government could borrow at a rate of $2.73 \%$ (the yield on five-year Treasury securities). During October 2008 though, Baa borrowers (corporate borrowers rated by Moody's as not being completely reliable) had to pay $8.88 \%$ a. What was the difference in borrowing costs for these corporate borrowers and the federal government? b. Go to www.research.stlouisfed.org/fred2/categories/22. Click on the link for "Treasury Constant Maturity" and find the most recent interest rate on 10 -year U.S. Treasury bonds. Then click back to the original web page on the link for "Corporate Bonds, then "Moody's," and find the rate for Baa corporate bonds. What is the current difference in borrowing costs between corporate borrowers and the U.S. government? c. Has this difference in borrowing costs increased or decreased since the height of the financial crisis in October of 2008 ? Why?

Step-by-Step Explanations

QUESTION

How does maturity transformation help banks optimize the trade-off between liquidity and rate of return?

STEP-BY-STEP ANSWER:

Step 1: Understand that banks attract deposits that are short-term in nature, providing savers with liquidity.
Step 2: Recognize that banks need to invest deposits in long-term assets like loans to earn a higher rate of return.
Step 3: Explain how maturity transformation involves using short-term funds to finance long-term projects, thus balancing liquidity with profitability.
Step 4: Acknowledge the inherent risk that if too many depositors demand cash simultaneously (as in a bank run), the bank might not have enough liquid assets.
Final Answer:

Maturity Transformation

QUESTION

What are the causes of bank runs and how can regulatory reforms mitigate the associated risks?

STEP-BY-STEP ANSWER:

Step 1: Define a bank run as a rapid withdrawal of deposits due to fear of a bank's insolvency.
Step 2: Identify factors that contribute to bank runs, such as loss of confidence and insufficient liquidity.
Step 3: Describe how financial panics can spread contagiously across the financial system, exacerbating economic instability.
Step 4: Discuss the role of government interventions and regulatory reforms, such as deposit insurance and liquidity requirements, in restoring confidence and reducing risks.
Final Answer:

Bank Runs and Financial Panics

QUESTION

How do depository banks and shadow banks differ in their approach to balancing liquidity and returns?

STEP-BY-STEP ANSWER:

Step 1: Define depository banks as institutions that take deposits from the public and offer loans, heavily regulated to protect depositors.
Step 2: Define shadow banks as institutions that engage in lending and other bank-like activities without accepting traditional deposits, and are less regulated.
Step 3: Explain that depository banks use maturity transformation under regulatory supervision to manage liquidity and returns, while shadow banks typically rely on alternative funding sources.
Step 4: Highlight the potential risks in shadow banking due to lower regulatory oversight and the implications for financial stability.
Final Answer:

Role of Depository vs. Shadow Banks

Common Mistakes

Overlooking the risk involved in maturity transformation by assuming that long-term assets always provide higher returns without liquidity issues.
Confusing the roles of depository banks and shadow banks, particularly regarding their regulatory environments.
Underestimating the potential for bank runs and financial panics by not considering the impact of depositor behavior on liquidity.
Assuming that government interventions can completely eliminate financial risks without acknowledging the trade-offs involved.