Suppose you own $1 million worth of 30-year Treasury bonds. Is this asset riskless?

To determine if owning $1 million worth of 30-year Treasury bonds is riskless, we need to consider the factors that may affect the value of these government bonds.

1. Credit Risk: Treasury bonds are generally considered to be the least risky investment because they are backed by the full faith and credit of the U.S. government. The U.S. government has the ability to print money or raise taxes to meet its debt obligations. Therefore, credit risk is relatively low.

2. Interest Rate Risk: Treasury bonds are sensitive to changes in interest rates. If the interest rates rise after you purchase the bonds, the value of your bonds in the secondary market will decrease because investors can purchase new bonds with higher interest rates. Conversely, if interest rates fall, the value of your bonds will increase.

3. Inflation Risk: Inflation erodes the purchasing power of fixed-income investments, including Treasury bonds. If inflation increases significantly over the 30-year period, the real returns on your investment may be lower.

4. Liquidity Risk: Treasury bonds are highly liquid and can easily be bought or sold in the secondary market. However, if you need to sell a large amount of bonds at once, it may temporarily impact the market price.

Considering these factors, while Treasury bonds are generally considered safer than other investment options, they are not entirely risk-free. The main risks you face are interest rate risk and inflation risk. However, since they are backed by the U.S. government, the credit risk is minimal. It's essential to assess your risk tolerance and investment goals before making any investment decisions.