Target-date fund
One fund that holds a mix of stocks and bonds and slowly shifts toward bonds as the year in its name gets closer.
The year in the name is roughly when you plan to retire. With decades to go, the fund holds mostly stocks. As the date nears, its managers move more into bonds and rebalance for you.
Funds with the same year can hold different mixes and charge different fees, so check the fee table and the glide path. A target-date fund can still lose money and does not promise any retirement income.
Example
A target-date fund holding 90% stocks puts $12,000 × 90% = $10,800 of a $12,000 balance in stocks and $1,200 in bonds.