Financial System, Banking, and Credit Risk: Exam 3 Study Guide (Macroeconomics)

Financial System and Banking

Transmission Costs and Asymmetric Information

The financial system is characterized by various costs and information asymmetries that affect lending, borrowing, and investment decisions. Understanding these concepts is crucial for analyzing how banks and other financial institutions operate.

• Adverse Selection: Occurs when lenders cannot distinguish between high-risk and low-risk borrowers before lending, leading to potential losses.

• Moral Hazard: Arises after a transaction, when borrowers may engage in riskier behavior because they do not bear the full consequences.

• Collateral: Assets pledged by borrowers to secure a loan and reduce lender risk.

• Credit Rationing: The restriction of loans by lenders, even if borrowers are willing to pay higher interest rates, often due to asymmetric information.

• Example: Banks may require collateral or higher interest rates to mitigate adverse selection and moral hazard.

The Economics of Banking

Bank Balance Sheets and Liquidity

Banks manage assets and liabilities to maintain liquidity and profitability. Understanding the structure of a bank's balance sheet is essential for analyzing its financial health.

• Assets: Loans, securities, reserves.

• Liabilities: Deposits, borrowings.

• Liquidity Risk: The risk that a bank cannot meet its short-term obligations.

• Gap Analysis: A method to measure the difference between the value of assets and liabilities that reprice within a certain period.

• Example: If a bank has $1 million in 2-year bonds (assets) and $0.5 million in 2-year deposits (liabilities), the gap is $0.5 million.

Graph Analysis

Graphs are used to illustrate relationships between variables such as interest rates, bank profits, and risk exposure.

• Understanding IRR (Interest Rate Risk) graphs: These show how changes in interest rates affect bank profits.

• Application: Use graphs to predict effects of gap on bank capital and profitability.

Financial Instruments and Capital Gains

Calculating Returns and Capital Gains

Financial instruments such as stocks and bonds are evaluated based on expected returns and capital gains. Calculations are essential for investment decisions.

• Expected 1-period return on equity:

  • Formula: $E[R_e] = \frac{D_1 + P_1 - P_0}{P_0}$

  • Where $D_1$ is the dividend, $P_1$ is the price at the end of the period, and $P_0$ is the initial price.

• Price from equity:

  • Formula: $P_0 = \frac{D_1}{1 + r_e}$

  • Where $r_e$ is the required rate of return.

• Gordon Growth Model: Used to value stocks with dividends growing at a constant rate.

  • Formula: $P_0 = \frac{D_1}{r_e - g}$

  • Where $g$ is the growth rate of dividends.

• Capital Gain:

  • Formula: $\text{Capital Gain} = \frac{P_1 - P_0}{P_0}$

• Example: If a stock is purchased at $P_0 = $100 and sold at$P_1 = $110, the capital gain is$(110-100)/100 = 0.10$ or 10%.

Credit Rationing and Risk Management

Credit Rationing

Credit rationing occurs when banks limit the supply of loans, often in response to adverse selection or increased default risk.

• Adverse Selection Response: Banks may restrict lending to avoid high-risk borrowers.

• Systemic/Symmetric Default Risk: Banks may reduce lending during economic downturns.

• Example: During a recession, banks may tighten credit standards, reducing loan availability.

Liquidity Risk and Hedging

Banks use various strategies to manage liquidity risk and protect against unexpected withdrawals or loan defaults.

• T-accounts: Used to track changes in assets and liabilities.

• Hedging: Banks may use swaps, securities, or other financial instruments to hedge against risk.

• Example: A bank may use Treasury securities to maintain liquidity.

Monetary Policy and the Federal Reserve

Monetary Policy Tools

The Federal Reserve uses various tools to influence the economy, including open market operations and setting reserve requirements.

• Open Market Operations: Buying and selling government securities to influence the money supply.

• Federal Reserve Bank: The central bank of the United States, responsible for monetary policy.

• Board of Governors: The main governing body of the Federal Reserve System.

• Example: The Fed may buy securities to increase the money supply and lower interest rates.

Summary Table: Key Concepts in Banking and Finance

Concept	Definition	Example/Application
Adverse Selection	Lenders cannot distinguish between high- and low-risk borrowers before lending.	Bank requires collateral to reduce risk.
Moral Hazard	Borrowers may take on more risk after receiving a loan.	Bank monitors borrower behavior.
Credit Rationing	Banks restrict loan supply despite higher interest rates.	Loan applications denied during recession.
Liquidity Risk	Risk of not meeting short-term obligations.	Bank holds Treasury securities for liquidity.
Gap Analysis	Difference between assets and liabilities repricing in a period.	Bank calculates gap to manage interest rate risk.
Open Market Operations	Fed buys/sells securities to influence money supply.	Fed buys bonds to lower interest rates.

Additional info:

• Some formulas and concepts (e.g., Gordon Growth Model, gap analysis) are expanded for clarity and completeness.

• Examples are provided to illustrate applications in real-world banking and finance.

• Graph analysis and T-account usage are included for practical understanding.