Chapter 15: The Financial Sector

Functionality of Banks
- Banks are not just storage facilities for money; they actively borrow from savers to lend to borrowers.
- Banks make money by charging higher interest rates on loans than what they pay to depositors. For example, if a bank pays 2% interest on deposits and lends at 6%, the bank keeps 4% as profit.
Key Functions of Banks
1. Pool Savings:
- Banks aggregate deposits from multiple savers, simplifying the loan process for borrowers.
1. Risk Diversification:
- Banks loan out funds to a variety of borrowers, thereby spreading risk.
1. Information Assessment:
- Banks investigate borrowers' financial histories to mitigate the risk of default.
1. Payment Services:
- Banks provide convenient services such as online payments, paycheck deposits, and money transfers.
1. Maturity Transformation:
- Banks use short-term deposits to provide long-term loans, creating a potential conflict between withdrawal demands and loan repayment.

Bank Runs:
- Defined as a scenario where many customers withdraw their deposits simultaneously, which could cause a bank to fail if it lacks sufficient cash reserves.
- A bank typically holds just enough cash for normal withdrawal levels, but a perception of instability can trigger panic and lead to mass withdrawals.
Triggers for Bank Runs:
- Factors such as rumors or economic uncertainty can incite withdrawal behavior even if the claims are unfounded.
Preventive Measures:
- Deposit Insurance:
- Introduced during the Great Depression to restore confidence; it guarantees that depositors will not lose their money. Countries like Canada implemented it later as confidence grew.

Definition of Bonds:
- A bond is an IOU, representing a borrower's promise to repay a loan with interest.
- The bond's terms include the issuer (borrower), principal (loan amount), maturity date (repayment deadline), and coupons (interest payments).
Functions of the Bond Market:
1. Channel Funds: Facilitates the movement of capital from savers to borrowers, especially for large loans.
2. Government Financing: Governments issue bonds to cover debt—e.g., the U.S. government has borrowed over $30 trillion this way.
3. Risk Spreading: Distributes the repayment responsibility across many bondholders.
4. Liquidity Creation: Bonds can be sold easily in the secondary market, allowing quick access to cash when needed.
Bond Risks:
- Default Risk: The potential failure of the issuer to repay the bond. Credit ratings agencies evaluate this risk.
- Term Risk: Related to uncertainty in future interest rates, longer-term bonds risk becoming less favorable if rates rise.
- Liquidity Risk: The difficulty of selling a bond quickly at a favorable price, especially if the buyer market is thin.

Definition of Stocks:
- Stocks represent partial ownership in a firm, where shareholders profit from company earnings but also bear losses.
Mechanisms of Stocks:
- Channeling Funds: Companies issue stock to finance expansion and other ventures.
- Risk Sharing: Shares distribute the financial risk of a company’s performance across multiple investors, minimizing individual risk.
- Control Redistribution: Shareholders influence company management through voting rights in corporate governance.
Stock Market Functionality:
- The stock market allows for buying and selling existing shares, thus providing liquidity and the opportunity for quick investment returns.

Bonds:
- Specific future interest payments, prioritized repayment in bankruptcy.
Stocks:
- Variable dividends dependent on company performance with shareholders last in line during liquidation.

Banks facilitate financial service operations including transactions and loans, yet they are prone to risks like bank runs.
Bonds act as an IOU, facilitating raising funds while incorporating various risks for investors.
Stocks allow companies to raise capital while engaging investors in potential profit-sharing and company management decisions.