Money market mutual funds invest in short-term, high-quality debt instruments, aiming to maintain a stable value.
Advantages include safety and stability due to high-credit-rating investments, high liquidity with typically penalty-free withdrawals, diversification across various debt instruments, and modest interest earnings.
Disadvantages encompass lower returns compared to riskier investments, lack of government insurance, vulnerability to inflation risk, management fees that can eat into returns, and the potential for negative yields in periods of extremely low or negative interest rates.