What types of bonds can investors buy in securities markets?

"When many people think of financial markets, they picture the equity markets. However, the bond markets are huge—the Securities Industry and Financial Markets Association (SIFMA) estimates that the global bond market is nearly $88 trillion. In the United States, companies and government entities sold about $2 billion in new bond issues in 2016. Average daily trading volume exceeded $760 billion, with U.S. Treasury securities accounting for more than 60 percent of the total. Bonds can be bought and sold in the securities markets. However, the price of a bond changes over its life as market interest rates fluctuate. When the market interest rate drops below the fixed interest rate on a bond, it becomes more valuable, and the price rises. If interest rates rise, the bond’s price will fall. Corporate bonds, as the name implies, are issued by corporations. They usually have a par value of $1,000. They may be secured or unsecured (called debentures), include special provisions for early retirement, or be convertible to common stock. Corporations can also issue mortgage bonds, bonds secured by property such as land, buildings, or equipment. In addition to regular corporate debt issues, investors can buy high-yield, or junk, bonds—high-risk, high-return bonds often used by companies whose credit characteristics would not otherwise allow them access to the debt markets. They generally earn 3 percent or more above the returns on high-quality corporate bonds. Corporate bonds may also be issued with an option for the bondholder to convert them into common stock. These convertible bonds generally allow the bondholder to exchange each bond for a specified number of shares of common stock. The U.S. Treasury sells three major types of federal debt securities: Treasury bills, Treasury notes, and Treasury bonds. All three are viewed as default-risk-free because they are backed by the U.S. government. Treasury bills mature in less than a year and are issued with a minimum par value of $1,000. Treasury notes have maturities of 10 years or less, and Treasury bonds have maturities as long as 25 years or more. Both notes and bonds are sold in denominations of $1,000 and $5,000. The interest earned on government securities is subject to federal income tax but is free from state and local income taxes. Municipal bonds are issued by states, cities, counties, and other state and local government agencies. These bonds typically have a par value of $5,000 and are either general obligation or revenue bonds. General obligation bonds are backed by the full faith and credit (and taxing power) of the issuing government. Revenue bonds, on the other hand, are repaid only from income generated by the specific project being financed. Examples of revenue bond projects include toll highways and bridges, power plants, and parking structures. Because the issuer of revenue bonds has no legal obligation to back the bonds if the project’s revenues are inadequate, they are considered"