BlackRock has reduced the fee on its iShares Comex Gold Trust exchange-traded fund by more than a third, to 25  basis points. The firm apparently is tossing its hat into the ETF fee wars started by Schwab, Fidelity and Vanguard.

BlackRock will have its work cut out for it, however, since its Comex Gold fund has $3.3 billion under management, whereas the iShares fund, the second-biggest ETF surpassed only by the iShares SPDR, has $50.6 billion under management.

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