The fund invests primarily in long-term investment-grade securities issued by the state of California, its political subdivisions, instrumentalities, and by other government entities, the interest on which is excludable from gross income for federal income tax and California state income tax purposes. During normal market conditions, at least 80% of the fund's net assets will consist of California tax-exempt securities. Its dollar-weighted average portfolio maturity is not restricted, but is expected to be greater than 10 years.