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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName RidgeWorth Funds
Prospectus Date rr_ProspectusDate Aug. 01, 2015
RidgeWorth Seix Floating Rate High Income Fund  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading SEIX FLOATING RATE HIGH INCOME FUND

Summary Section

A Shares, C Shares, I Shares and IS Shares
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The Seix Floating Rate High Income Fund (the “Fund”) attempts to provide a high level of current income.
Expense [Heading] rr_ExpenseHeading Fees and Expenses of the Fund
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in RidgeWorth Funds. More information about these and other discounts is available from your financial professional and in Sales Charges on page 75 of the Fund’s prospectus and Rights of Accumulation on page 73 of the Fund’s statement of additional information.
Shareholder Fees Caption [Text] rr_ShareholderFeesCaption Shareholder Fees
(fees paid directly from your investment)
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock The Fund pays transaction costs, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 29% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 29.00%
Expense Breakpoint Discounts [Text] rr_ExpenseBreakpointDiscounts You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in RidgeWorth Funds. More information about these and other discounts is available from your financial professional and in Sales Charges on page 75 of the Fund’s prospectus and Rights of Accumulation on page 73 of the Fund’s statement of additional information.
Expense Breakpoint, Minimum Investment Required [Amount] rr_ExpenseBreakpointMinimumInvestmentRequiredAmount $ 50,000
Expense Example [Heading] rr_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated. The example also assumes that your investment has a 5% return each year, that the Fund’s operating expenses remain the same and that you reinvest all dividends and distributions. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, No Redemption, By Year, Caption [Text] rr_ExpenseExampleNoRedemptionByYearCaption You would pay the following expenses if you did not redeem your shares:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock Under normal circumstances, the Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in a combination of first- and second-lien senior floating rate loans and other floating rate debt securities. Equity securities may be obtained through a restructuring of a debt security held in the Fund and may also be retained in the Fund.

These loans are loans made by banks and other large financial institutions to various companies and are senior in the borrowing companies' capital structure. Coupon rates are generally floating, not fixed, and are tied to a benchmark lending rate, the most popular of which is the London Interbank Offered Rate ("LIBOR") or are set at a specified floor, whichever is higher. LIBOR is based on rates that contributor banks in London charge each other for interbank deposits and is typically used to set coupon rates on floating rate debt securities. The interest rates of these floating rate debt securities vary periodically based upon a benchmark indicator of prevailing interest rates.

The Fund invests all or substantially all of its assets in floating rate loans and debt securities that are rated below investment grade by the Merrill Composite Rating or in comparable unrated securities. The Fund may also invest up to 20% of its net assets in any combination of junior debt securities or securities with a lien on collateral lower than a senior claim on collateral, high yield fixed-rate bonds, investment grade fixed income debt obligations, asset-backed securities (such as special purpose trusts investing in bank loans), money market securities and repurchase agreements. The Fund may invest a portion of its assets in securities that are restricted as to resale.

In selecting investments for purchase and sale, the Fund's Subadviser, Seix Investment Advisors LLC ("Seix" or the "Subadviser"), will emphasize securities which are within the segment of the high yield market it has targeted, which are securities rated below investment grade or unrated securities that the Subadviser believes are of comparable quality.

The Fund may invest up to 20% of its total assets in senior loans made to non-U.S. borrowers provided that no more than 5% of the portfolio's loans are non-U.S. dollar denominated. The Fund may also engage in certain hedging transactions.

Some types of senior loans in which the Fund may invest require that an open loan for a specific amount be continually offered to a borrower. These types of senior loans are commonly referred to as revolvers. Because revolvers contractually obligate the lender (and therefore those with an interest in the loan) to fund the revolving portion of the loan at the borrower's discretion, the Fund must have funds sufficient to cover its contractual obligation. Therefore the Fund will maintain, on a daily basis, high-quality, liquid assets in an amount at least equal in value to its contractual obligation to fulfill the revolving senior loan. The Fund will not encumber any assets that are otherwise encumbered. The Fund will limit its investments in such obligations to no more than 25% of the Fund's total assets.

In addition, to implement its investment strategy, the Fund may buy or sell derivative instruments (such as swaps, including credit default swaps, futures, credit linked notes, options and warrants) to use as a substitute for a purchase or sale of a position in the underlying assets and/or as part of a strategy designed to reduce exposure to other risks, such as interest rate or credit risks. The Fund may count the value of certain derivatives with floating rate debt or high yield bond characteristics towards its policy to invest, under normal circumstances, at least 80% of its net assets in a combination of first- and second-lien senior floating rate loans and other floating rate debt securities.
Risk [Heading] rr_RiskHeading Principal Investment Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock You may lose money if you invest in the Fund. A Fund share is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Below Investment Grade Securities Risk: Securities that are rated below investment grade (sometimes referred to as "junk bonds", including those bonds rated lower than "BBB-" by Standard & Poor's Financial Services LLC and Fitch, Inc. or "Baa3" by Moody's Investors Service), or that are unrated but judged by the Subadviser to be of comparable quality at the time of purchase, involve greater risk of default or downgrade and are more volatile than investment grade securities and are considered speculative.

These instruments have a higher degree of default risk and may be less liquid than higher-rated bonds. These instruments may be subject to a greater price volatility due to such factors as specific corporate developments, interest rate sensitivity, negative perceptions of high yield investments generally, and less secondary market liquidity. This potential lack of liquidity may make it more difficult for the Fund to value these instruments accurately.

Debt Securities Risk: Debt securities, such as bonds, involve credit risk. Credit risk is the risk that the borrower will not make timely payments of principal or interest or will default. Changes in an issuer's credit rating or the market's perception of an issuer's creditworthiness may also affect the value of the Fund's investment in that issuer. The degree of credit risk depends on the issuer's financial condition and on the terms of the securities.

Debt securities are also subject to interest rate risk, which is the risk that the value of a debt security may fall when interest rates rise. In general, the market price of debt securities with longer maturities will go up or down more in response to changes in interest rates than the market price of shorter term securities.

Derivatives Risk: In the course of pursuing its investment strategies, the Fund may invest in certain types of derivatives including swaps, foreign currency forward contracts and futures. The Fund is exposed to additional volatility and potential loss with these investments. Losses in these investments may exceed the Fund's initial investment. Derivatives may be difficult to value, may become illiquid and may not correlate perfectly with the overall securities market.

Floating Rate Loan Risk: The value of the collateral securing a floating rate loan can decline, be insufficient to meet the obligations of the borrower, or be difficult to liquidate. As a result, a floating rate loan may not be fully collateralized and can decline significantly in value. Floating rate loans generally are subject to contractual restrictions on resale. The liquidity of floating rate loans, including the volume and frequency of secondary market trading in such loans, varies significantly over time and among individual floating rate loans. During periods of infrequent trading, valuing a floating rate loan can be more difficult; and buying and selling a floating rate loan at an acceptable price can also be more difficult and delayed.

Difficulty in selling a floating rate loan can result in a loss. In addition, floating rate loans generally are subject to extended settlement periods, which may impair the Fund's ability to sell or realize the full value of its loans in the event of a need to liquidate such loans.

Foreign Companies and Securities Risk: Foreign securities and dollar denominated securities of foreign issuers involve special risks such as economic or financial instability, lack of timely or reliable financial information and unfavorable political or legal developments. Foreign securities also involve risks such as currency fluctuations and delays in enforcement of rights. All of these risks are increased for investments in emerging markets.

Foreign Currency Forward Contracts Risk: The technique of purchasing foreign currency forward contracts to obtain exposure to currencies or manage currency risk may not be effective. In addition, currency markets generally are not as regulated as securities markets.

Futures Contract Risk: The risks associated with futures include: the Subadviser's ability to manage these instruments, the potential inability to terminate or sell a position, the lack of a liquid secondary market for the Fund's position, mispricing or improper valuation and that the other party to a derivative transaction will not meet its obligations. The prices of derivatives may move in unexpected ways, especially in unusual market conditions, and may result in increased volatility and unexpected losses.

A liquid secondary market may not always exist for the Fund's derivative positions at any time. In fact, many over-the-counter instruments (instruments not traded on exchange) may not be liquid. Over-the-counter instruments also involve the risk that the other party to the derivative transaction will not meet its obligations.

Prepayment and Call Risk: During periods of falling interest rates, an issuer of a callable bond held by the Fund may "call" or prepay the bond before its stated maturity date. When mortgages and other obligations are prepaid and when securities are called, the Fund may have to reinvest the proceeds in securities with a lower yield or fail to recover additional amounts paid for securities with higher interest rates, resulting in an unexpected capital loss and/or a decline in the Fund's income.

Restricted Securities Risk: Certain debt securities may be restricted securities, which are not registered with the SEC and thus may not be sold publicly until registration has been made. Therefore, there is the absence of a public market and there is limited investor information.

Senior Loan Risk: Economic and other market events may reduce the demand for certain senior loans held by the Fund, which may adversely impact the net asset value of the Fund.

Difficulty in selling a senior loan can result in a loss. In addition, senior loans generally are subject to extended settlement periods, which may impair the a Fund's ability to sell or realize the full value of its loans in the event of a need to liquidate such loans.

Swap Risk: The Fund may enter into swap agreements, including credit default and interest rate swaps, for purposes of attempting to gain exposure to a particular asset without actually purchasing that asset or to hedge a position. Credit default swaps may increase or decrease the Fund's exposure to credit risk and could result in losses if the Subadviser does not correctly evaluate the creditworthiness of the entity on which the credit default swap is based. Swap agreements may also subject the Fund to the risk that the counterparty to the transaction may not meet its obligations.

U.S. Government Securities Risk: U.S. Treasury securities are backed by the full faith and credit of the U.S. government, while other types of securities issued or guaranteed by federal agencies, instrumentalities, and U.S. government-sponsored entities may or may not be backed by the full faith and credit of the U.S. government. U.S. government securities may underperform other segments of the fixed income market or the fixed income market as a whole.
Risk Lose Money [Text] rr_RiskLoseMoney You may lose money if you invest in the Fund.
Risk Not Insured Depository Institution [Text] rr_RiskNotInsuredDepositoryInstitution A Fund share is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock The bar chart and the performance table that follow illustrate the risks and volatility of an investment in the Fund. The Fund’s past performance (before and after taxes) does not indicate how the Fund will perform in the future. The Fund began operating on March 1, 2006. Performance information for the A Shares and C Shares prior to their inception on May 8, 2006 and August 2, 2007, respectively, is that of the I Shares of the Fund. The performance of I Shares has not been adjusted to reflect the Fund’s A Share or C Share expenses. If it had been, the performance would have been lower. IS Shares commenced operations on August 1, 2014. Performance information for IS shares will be included after the share class has been in operation for one complete calendar year. Updated performance information is available by contacting the RidgeWorth Funds at 1-888-784-3863 or by visiting www.ridgeworth.com.

The annual returns in the bar chart which follows are for the I Shares without reflecting payment of any sales charge; if they did reflect such payment of sales charges, annual returns would be lower.

The following table compares the Fund's average annual total returns for the periods indicated with those of a broad measure of market performance.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The following table compares the Fund's average annual total returns for the periods indicated with those of a broad measure of market performance.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-888-784-3863
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.ridgeworth.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund’s past performance (before and after taxes) does not indicate how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading This bar chart shows the changes in performance of the Fund’s I Shares from year to year.
Bar Chart Does Not Reflect Sales Loads [Text] rr_BarChartDoesNotReflectSalesLoads The annual returns in the bar chart which follows are for the I Shares without reflecting payment of any sales charge; if they did reflect such payment of sales charges, annual returns would be lower.
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Best Quarter   Worst Quarter
12.47%   -18.40%
(6/30/2009)   (12/31/2008)
Performance Table Heading rr_PerformanceTableHeading AVERAGE ANNUAL TOTAL RETURNS
(for periods ended December 31, 2014)
Performance Table Market Index Changed rr_PerformanceTableMarketIndexChanged Index returns reflect the returns of the Credit Suisse First Boston Leveraged Loan Index, the Fund's former benchmark index, through January 31, 2010 and the Credit Suisse Institutional Leveraged Loan Index thereafter.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts (“IRAs”).
Performance Table One Class of after Tax Shown [Text] rr_PerformanceTableOneClassOfAfterTaxShown After-tax returns are shown for only the I Shares. After-tax returns for other share classes will vary.
Performance Table Narrative rr_PerformanceTableNarrativeTextBlock After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts (“IRAs”). After-tax returns are shown for only the I Shares. After-tax returns for other share classes will vary.
Performance Table Footnotes rr_PerformanceTableFootnotesTextBlock ** Index returns reflect the returns of the Credit Suisse First Boston Leveraged Loan Index, the Fund’s former benchmark index, through January 31, 2010 and the Credit Suisse Institutional Leveraged Loan Index thereafter.
RidgeWorth Seix Floating Rate High Income Fund | A Shares  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (load) Imposed on Purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice 2.50%
Maximum Deferred Sales Charge (load) (as a % of the net asset value) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.40%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 0.30%
Other Expenses rr_OtherExpensesOverAssets 0.21%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.91%
1 year rr_ExpenseExampleYear01 $ 341
3 years rr_ExpenseExampleYear03 533
5 years rr_ExpenseExampleYear05 741
10 years rr_ExpenseExampleYear10 1,342
1 year rr_ExpenseExampleNoRedemptionYear01 341
3 years rr_ExpenseExampleNoRedemptionYear03 533
5 years rr_ExpenseExampleNoRedemptionYear05 741
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,342
1 Year rr_AverageAnnualReturnYear01 (1.97%)
5 Years rr_AverageAnnualReturnYear05 4.51%
Since Inception rr_AverageAnnualReturnSinceInception 3.71%
RidgeWorth Seix Floating Rate High Income Fund | C Shares  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (load) Imposed on Purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (load) (as a % of the net asset value) rr_MaximumDeferredSalesChargeOverOther 1.00%
Management Fees rr_ManagementFeesOverAssets 0.40%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other Expenses rr_OtherExpensesOverAssets 0.10%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 1.50%
1 year rr_ExpenseExampleYear01 $ 253
3 years rr_ExpenseExampleYear03 474
5 years rr_ExpenseExampleYear05 818
10 years rr_ExpenseExampleYear10 1,791
1 year rr_ExpenseExampleNoRedemptionYear01 153
3 years rr_ExpenseExampleNoRedemptionYear03 474
5 years rr_ExpenseExampleNoRedemptionYear05 818
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,791
1 Year rr_AverageAnnualReturnYear01 (1.05%)
5 Years rr_AverageAnnualReturnYear05 4.36%
Since Inception rr_AverageAnnualReturnSinceInception 3.49%
RidgeWorth Seix Floating Rate High Income Fund | I Shares  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (load) Imposed on Purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (load) (as a % of the net asset value) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.40%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.21%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.61%
1 year rr_ExpenseExampleYear01 $ 62
3 years rr_ExpenseExampleYear03 195
5 years rr_ExpenseExampleYear05 340
10 years rr_ExpenseExampleYear10 762
1 year rr_ExpenseExampleNoRedemptionYear01 62
3 years rr_ExpenseExampleNoRedemptionYear03 195
5 years rr_ExpenseExampleNoRedemptionYear05 340
10 years rr_ExpenseExampleNoRedemptionYear10 $ 762
2007 [1] rr_AnnualReturn2007 2.99%
2008 [1] rr_AnnualReturn2008 (21.79%)
2009 [1] rr_AnnualReturn2009 32.31%
2010 [1] rr_AnnualReturn2010 9.97%
2011 [1] rr_AnnualReturn2011 2.09%
2012 [1] rr_AnnualReturn2012 9.07%
2013 [1] rr_AnnualReturn2013 5.15%
2014 [1] rr_AnnualReturn2014 0.81%
Year to Date Return, Label rr_YearToDateReturnLabel The Fund's total return for the six months ended
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Jun. 30, 2015
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 3.27%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 12.47%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (18.40%)
1 Year rr_AverageAnnualReturnYear01 0.81%
5 Years rr_AverageAnnualReturnYear05 5.35%
Since Inception [2] rr_AverageAnnualReturnSinceInception 4.31%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2006
RidgeWorth Seix Floating Rate High Income Fund | IS Shares  
Risk/Return: rr_RiskReturnAbstract  
Maximum Sales Charge (load) Imposed on Purchases (as a % of offering price) rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Maximum Deferred Sales Charge (load) (as a % of the net asset value) rr_MaximumDeferredSalesChargeOverOther none
Management Fees rr_ManagementFeesOverAssets 0.40%
Distribution (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.07%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.47%
1 year rr_ExpenseExampleYear01 $ 48
3 years rr_ExpenseExampleYear03 151
5 years rr_ExpenseExampleYear05 263
10 years rr_ExpenseExampleYear10 591
1 year rr_ExpenseExampleNoRedemptionYear01 48
3 years rr_ExpenseExampleNoRedemptionYear03 151
5 years rr_ExpenseExampleNoRedemptionYear05 263
10 years rr_ExpenseExampleNoRedemptionYear10 $ 591
RidgeWorth Seix Floating Rate High Income Fund | Return After Taxes on Distributions | I Shares  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 (1.04%)
5 Years rr_AverageAnnualReturnYear05 3.40%
Since Inception [2] rr_AverageAnnualReturnSinceInception 2.16%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2006
RidgeWorth Seix Floating Rate High Income Fund | Return After Taxes on Distributions and Sale of Fund Shares | I Shares  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 0.47%
5 Years rr_AverageAnnualReturnYear05 3.35%
Since Inception [2] rr_AverageAnnualReturnSinceInception 2.46%
Inception Date rr_AverageAnnualReturnInceptionDate Mar. 01, 2006
RidgeWorth Seix Floating Rate High Income Fund | Credit Suisse Institutional Leveraged Loan Index (reflects no deduction for fees, expenses or taxes)  
Risk/Return: rr_RiskReturnAbstract  
1 Year rr_AverageAnnualReturnYear01 2.17%
5 Years rr_AverageAnnualReturnYear05 5.33%
Since Inception [2] rr_AverageAnnualReturnSinceInception 3.25%
Inception Date rr_AverageAnnualReturnInceptionDate Feb. 28, 2006
[1] The performance information shown above is based on a calendar year. The Fund's total return for the six months ended June 30, 2015 was 3.27%.
[2] Since inception of the I Shares of the Fund on March 1, 2006. Benchmark return since February 28, 2006 (benchmark returns available only on a month end basis).