What is a Self-directed 401(k) retirement plan ?

A Self directed 401(k) retirement plan is an investment option offered by some 401(k) plans that allows the plan participant to invest 401(k) money in mutual funds, individual stocks and or bonds that are not included in the plan.
Plans typically include a set number of mutual funds for their participants, and the window account allows individual investors more flexibility with their investment portfolio.
These accounts charge an annual maintenance fee as well as trading commissions which are known as a brokerage window account.