Unit
- Definition: Fixed income securities are debt instruments where the issuer borrows capital from investors and promises to pay interest at specified intervals and return the principal at maturity. Common examples include government bonds, corporate bonds, municipal bonds, and mortgage-backed securities.
- Key Characteristics: These securities offer predictable cash flows, typically semiannual coupon payments, and a fixed maturity date. The coupon rate is usually set at issuance and remains constant, though floating-rate notes adjust periodically based on a reference rate.
- Issuers: Sovereign governments issue treasury bonds to finance fiscal deficits; corporations issue bonds to fund operations or expansion; municipalities issue bonds for public projects. Each issuer carries a different credit risk profile.
- Investors: Institutional investors like pension funds, insurance companies, and mutual funds dominate the market because they need stable, long-term income. Retail investors participate via bond funds or ETFs.
- Risk-Return Profile: Fixed income generally offers lower expected returns than equities but with less volatility. However, risks include interest rate risk, credit risk, inflation risk, and liquidity risk, which affect pricing and total return.
- Market Size: The global fixed income market is significantly larger than the equity market, with the U.S. Treasury market alone exceeding $20 trillion in outstanding debt. It is a cornerstone of the global financial system.
- Types of Bonds: Zero-coupon bonds pay no periodic interest but are sold at a discount; callable bonds allow the issuer to redeem early; putable bonds give the holder the right to sell back; convertible bonds can be exchanged for equity.
- Role in Portfolio: Bonds provide diversification, income, and capital preservation. They often serve as a hedge against economic downturns when equity prices fall, as flight-to-safety flows boost government bond prices.
- Secondary Market Trading: After issuance, bonds trade on the secondary market through dealers or electronic platforms like Tradeweb and MarketAxess. Prices fluctuate based on interest rates, credit quality, and supply-demand dynamics. Bid-ask spreads vary, with government bonds offering tighter spreads than corporate or municipal issues.
- Pricing and Yield: Bond prices move inversely to yields. A bond's yield to maturity reflects its total return if held to maturity, including coupon income and capital gain or loss. Current yield considers only the annual coupon relative to price, while yield to call accounts for early redemption scenarios.
- Duration and Convexity: Duration measures a bond's price sensitivity to interest rate changes, expressed in years. Modified duration estimates percentage price change for a 1% yield shift. Convexity captures the curvature of the price-yield relationship, improving accuracy for large rate moves, especially in mortgage-backed securities.
- Credit Ratings: Agencies like Moody's, S&P, and Fitch assign ratings based on the issuer's financial health and repayment ability. Investment-grade bonds (BBB- or higher) have lower default risk; high-yield or junk bonds (below BBB-) offer higher yields but greater credit risk. Downgrades can trigger forced selling by institutional investors.
- Settlement and Clearing: Bond trades typically settle T+1 for U.S. Treasuries and T+2 for corporate and municipal bonds via central clearinghouses like FICC. Delivery versus payment reduces settlement risk. Accrued interest is calculated between coupon dates, with the buyer compensating the seller for interest earned since the last payment.
- Tax Considerations: Interest from municipal bonds is generally exempt from federal income tax, and often from state and local taxes for residents. Corporate bond interest is fully taxable at ordinary income rates. Treasury bond interest is subject to federal tax but exempt from state and local taxes, affecting after-tax yield comparisons for different investors.
Regulatory Requirement
Regulation: SEC and FINRA (US) oversee fixed income markets through rules like MSRB for municipal bonds and TRACE for corporate bond trade reporting. Issuers must file prospectuses and periodic disclosures under the Securities Act.
Quick Revision
- Fixed income securities are debt instruments with predictable cash flows and maturity.
- Issuers include governments, corporations, and municipalities.
- Investors range from institutions to retail, each with different risk appetites.
- Bonds offer lower risk than equities but carry interest rate, credit, and inflation risks.
- The global bond market is larger than the stock market and critical for portfolio diversification.