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Label Element Value
Virtus Duff & Phelps Real Asset Fund  
Risk/Return: oef_RiskReturnAbstract  
Supplement to Prospectus [Text Block] oef_SupplementToProspectusTextBlock

Supplement dated March 10, 2026 to the Fund’s Summary Prospectus

and the Virtus Opportunities Trust Statutory Prospectus applicable to the Fund,

each dated January, 28, 2026, as supplemented

IMPORTANT NOTICE TO INVESTORS

The table showing Average Annual Total Returns in the “Performance Information” section of the Fund’s summary prospectus and the summary section of the statutory prospectus applicable to the Fund, is hereby replaced in its entirety with the following:
Risk/Return [Heading] oef_RiskReturnHeading Virtus Duff & Phelps Real Asset Fund
Bar Chart and Performance Table [Heading] oef_BarChartAndPerformanceTableHeading Performance Information
Performance Table Heading oef_PerformanceTableHeading Average Annual Total Returns (for the periods ended 12/31/25)
Index No Deduction for Fees, Expenses, or Taxes [Text] oef_IndexNoDeductionForFeesExpensesTaxes (reflects no deduction for fees or expenses)
Virtus Duff & Phelps Real Asset Fund | MSCI World Index (net)  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel MSCI World Index (net)
Average Annual Return, Percent oef_AvgAnnlRtrPct 21.09%
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.15%
Average Annual Return, Percent oef_AvgAnnlRtrPct 12.17%
Average Annual Return, Percent oef_AvgAnnlRtrPct 11.60%
Performance Inception Date oef_PerfInceptionDate Jan. 31, 2022
Virtus Duff & Phelps Real Asset Fund | Class I Shares  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Return Before Taxes
Average Annual Return, Percent oef_AvgAnnlRtrPct 16.26%
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.64%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.00%
Virtus Duff & Phelps Real Asset Fund | Class I Shares | After Taxes on Distributions  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Return After Taxes on Distributions
Average Annual Return, Percent oef_AvgAnnlRtrPct 15.43%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.95%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.35%
Virtus Duff & Phelps Real Asset Fund | Class I Shares | After Taxes on Distributions and Sales  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Return After Taxes on Distributions and Sale of Fund Shares
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.74%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.41%
Average Annual Return, Percent oef_AvgAnnlRtrPct 5.42%
Virtus Duff & Phelps Real Asset Fund | Class A Shares  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Return Before Taxes
Average Annual Return, Percent oef_AvgAnnlRtrPct 9.54%
Average Annual Return, Percent oef_AvgAnnlRtrPct 8.13%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.13%
Virtus Duff & Phelps Real Asset Fund | Class R6 Shares  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Return Before Taxes
Average Annual Return, Percent oef_AvgAnnlRtrPct 16.28%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.22%
Performance Inception Date oef_PerfInceptionDate Jan. 31, 2022