What Are Treasury Bills and Money Market Funds?
Treasury bills are short-term government debt securities issued by the state, with maturities of 3, 6, 9, and 12 months. They are considered highly liquid and low credit risk assets, as they are backed by the government. Money market funds, on the other hand, invest in short-term fixed-income assets such as Treasury bills, commercial paper, and certificates of deposit, offering diversification and professional management. Both instruments are popular among investors seeking to preserve capital in the short term.
Comparison of Yield and Liquidity
Treasury bills offer a known yield at purchase, as they are bought at a discount and redeemed at face value. Their liquidity is high in the secondary market, and retail investors can buy them directly through Treasury auctions. Money market funds, in contrast, do not guarantee a fixed return, but typically provide a variable yield linked to market interest rates. Liquidity is immediate, with redemptions usually processed within one or two business days. It is important to compare fees and time horizons before choosing.
Interest Rate Risk in Short-Term Fixed Income
Although short-term fixed income is considered low risk, it is not immune to interest rate risk. This risk arises when interest rates rise, causing the value of existing fixed-income assets to fall. However, due to short maturities, sensitivity is lower than for long-term bonds. In money market funds, the risk is even more limited because of the constant turnover of the portfolio. Investors should be aware that even in safe instruments, the net asset value may fluctuate slightly.
Further Reading
For more information, you can consult the Spanish Treasury website (www.tesoro.es) for details on Treasury bill auctions, and the Spanish National Securities Market Commission (CNMV) at www.cnmv.es for data on investment funds. The Bank of Spain also publishes reports on money markets.
Disclaimer: Informational content. Does not constitute financial advice.