These days, as the economy becomes more unstable, many people are asking about ways to invest in bonds. In particular, U.S. Treasury bonds are considered the most trusted safe assets by global investors, and Korean investors are also showing increasing interest. However, simply investing because they are "safe" is not enough; it’s essential to consider various variables such as interest rate fluctuations, exchange rate risks, and inflation comprehensively.

Let's start by clarifying what U.S. Treasury bonds are. They are debt securities issued by the U.S. government, and because they are backed by the credit of the U.S. government, the principal and interest are guaranteed unless the government defaults. From an investor’s perspective, it’s a structure where you lend money to the U.S. government and receive a fixed interest. This is why they are regarded as the most trusted assets worldwide.

Before choosing a bond investment method, you need to understand the types of Treasury bonds. They are broadly divided into three categories based on maturity. First, short-term bonds (less than 1 year) are issued at a discount and redeemed at face value at maturity, purchased at a lower price. They have low interest rate risk, making them advantageous for short-term cash management. Medium-term bonds (2–10 years) are traded most actively, especially the 10-year bonds, which serve as the benchmark for U.S. long-term interest rates. Since interest is paid every six months, they are popular among those seeking stable income. Long-term bonds (20–30 years) offer relatively higher interest rates but tend to have larger price fluctuations due to interest rate changes.

There are mainly three ways to invest in bonds. Direct purchase is possible through the U.S. Treasury’s TreasuryDirect website, starting from as little as $100, with no fees. Another method is through domestic securities firms, which offer overseas bond trading services. Lastly, ETF investment involves buying and selling U.S. Treasury bond ETFs listed on domestic and international markets, which is the easiest approach for individual investors. Choosing a hedged product (H-mark) can reduce exchange rate risk.

Understanding the yield of Treasury bonds is crucial. The yield to maturity (YTM) represents the total return if held until maturity, and it has an inverse relationship with bond prices. When prices rise, yields fall; when prices fall, yields rise. The current yield is simply the annual interest divided by the current price. The 10-year U.S. Treasury yield is often used as a key indicator of long-term interest rates.

Factors influencing bond prices and yields include the Federal Reserve’s (Fed) interest rate policies, which have a direct impact. When rates rise, existing bonds become less attractive, causing their prices to fall; when rates fall, the opposite occurs. Higher inflation leads investors to demand higher yields, putting downward pressure on bond prices. Economic growth tends to lead to rising interest rates, which increases bond yields. Government spending and debt levels are also important; increased bond issuance results in oversupply, lowering prices and raising yields.

External factors also play a role. When global economic uncertainty or crises occur, demand for safe assets like U.S. Treasuries increases, pushing prices up. International tensions such as wars or political instability have similar effects. Fluctuations in other asset markets like stocks or real estate also influence bond yields. When the stock market is booming, investors tend to sell bonds to buy stocks, causing bond prices to fall and yields to rise.

At the beginning of 2025, the U.S. bond market was at a critical turning point. Expectations of Fed rate cuts led to rising bond prices, with the 10-year Treasury yield around 4.54%. Experts’ forecasts varied: JPMorgan expected a 75 basis point cut, while Goldman Sachs predicted two 25 basis point cuts, citing the economy might be stronger than expected. Most institutions anticipated that U.S. bond yields would decline slightly in 2025 and then rebound after the Fed’s rate cuts ended.

When choosing a bond investment method, it’s also helpful to compare U.S. Treasury bonds with U.S. stocks and CFDs. In terms of stability and liquidity, bonds are superior. They carry almost no default risk and provide fixed interest income, but their yields are relatively low. U.S. stocks are more volatile but can offer higher average returns and are highly liquid, allowing quick buying and selling. CFDs leverage can maximize profits but also increase the risk of losses. This method is preferred by investors seeking short-term gains.

For Korean investors, investing in U.S. Treasuries allows them to hold dollar assets and hedge against won depreciation. It also offers significant portfolio diversification benefits. However, it’s important to carefully consider variables such as interest rate changes, exchange rate risks, and inflation. Choosing the right type of Treasury bond aligned with your investment goals and risk tolerance is the first step toward building an effective portfolio.