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      <link:roleType roleURI="http://www.troweprice.com/2009-06-30/role/DisclosureSummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetail" id="DisclosureSummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetail">
        <link:definition>40004 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Property and Equipment) (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>40005 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Goodwill) (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>40006 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Stock Awards and Options) (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://www.troweprice.com/2009-06-30/role/DisclosureCashEquivalentsDetail" id="DisclosureCashEquivalentsDetail">
        <link:definition>40100 - Disclosure - CASH EQUIVALENTS. (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:definition>40201 - Disclosure - INFORMATION ABOUT RECEIVABLES, REVENUES, AND SERVICES. (Receivables from Sponsored Mutual Funds) (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>40800 - Disclosure - INTANGIBLE ASSETS. (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>40903 - Disclosure - INCOME TAXES. (Unrecognized Tax Benefits) (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>41400 - Disclosure - SUPPLEMENTARY QUARTERLY FINANCIAL DATA. (Unaudited) (Detail)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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</XBRL>
