Investors elsewhere may know even less, because most funds based in Europe and Asia disclose only management fees, not other expenses, such as marketing costs, that are charged to fund shareholders.

ECONOMIST: Mutual funds

There are four kinds: administrative fees, marketing fees (sometimes called 12-b1 fees), investment management fees and trading costs.

CNN: Hidden fees are eating up your 401(k)s

Management did note first quarter earnings will fall 15% to 20% on margin pressures and increased marketing costs.

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