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Virtus KAR Small-Mid Cap Growth Fund

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The fund has an investment objective of long-term capital appreication.

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The tables below illustrate the fees and expenses that you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts in Class A Shares if you and your family invest, or agree to invest in the future, at least $50,000 in Virtus Funds. More information on these and other discounts is available: (i) from your financial professional or other financial intermediary; (ii) under “Sales Charges” on page 77 of the fund’s prospectus; and (iii) with respect to purchase of shares through specific intermediaries, in Appendix A to the fund’s prospectus, entitled “Intermediary Sales Charge Discounts and Waivers.”

Operating Expenses Caption [Optional Text]

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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Text Block]

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The fund pays transaction costs, such as commissions, 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 24% of the average value of its portfolio.

Expense Breakpoint Discounts [Text]

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You may qualify for sales charge discounts in Class A Shares if you and your family invest, or agree to invest in the future, at least $50,000 in Virtus Funds.

Expense Example [Heading]

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Example

Expense Example by, Year, Caption [Text]

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Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy Narrative [Text Block]

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The fund pursues long-term capital appreciation in the small and medium market capitalization sectors while seeking to incur less risk than the small- and mid-cap growth markets. The fund invests in a select group of small and mid capitalization companies believed by the subadviser to possess sustainable competitive advantages at prices the subadviser deems attractive. The investment strategy emphasizes companies the subadviser believes to have a sustainable competitive advantage, strong management and low financial risk and to be able to grow over market cycles. Although the fund invests primarily in U.S. companies, it may invest in foreign securities and depositary receipts.

Under normal circumstances, the fund invests at least 80% of its assets in common stocks of small- and mid-market capitalization companies. As of the date of this Prospectus, the fund’s subadviser considers small- and mid-market capitalization companies for this purpose to be those companies that, at the time of initial purchase, have

market capitalizations generally within the range of companies included in the Russell 2500^TM Growth Index on a rolling three-year basis. On this basis, as of September 30, 2025, the market capitalization range of companies included in the Russell 2500^TM Growth Index over the past three years was $93,600 to $56.5 billion. Generally, the fund invests in approximately 20 to 35 securities at any given time.

Bar Chart and Performance Table [Heading]

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Performance Information

Performance Information Illustrates Variability of Returns [Text]

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The bar chart and table below provide some indication of the potential risks of investing in the fund.

Performance Availability Phone [Text]

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800-243-1574

Performance Past Does Not Indicate Future [Text]

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The fund’s past performance, before and after taxes, is not necessarily an indication of how the fund will perform in the future.

Bar Chart Does Not Reflect Sales Loads [Text]

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Returns do not reflect sales charges applicable to other share classes and would be lower if they did.

Performance Table Heading

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Average Annual Total Returns (for the periods ended 12/31/25)

Performance Table Uses Highest Federal Rate

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After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Class I Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return.

Performance Table One Class of after Tax Shown [Text]

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After-tax returns are shown only for Class I Shares; after-tax returns for other classes will vary.

Performance Table Closing [Text Block]

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The FT Wilshire 5000 Index is a broad-based free-float market capitalization-weighted index that aims to capture 100% of the U.S. investable market capitalization. The index is calculated on a total return basis with dividends reinvested. The index is unmanaged and not available for direct investment.

The Russell 2500^TM Growth Index is a free float-adjusted market capitalization-weighted index of growth oriented stocks of the 2,500 smallest companies in the Russell Universe, which comprises the 3,000 largest U.S. companies. Effective March 24, 2025, the index applies a capping methodology. Index constituents are capped quarterly so that no more than 22.5% of the index weight may be allocated to a single constituent, and the sum of the weights of all constituents representing more than 4.5% of the index should not exceed 45% of the total index weight. For periods prior to March 24, 2025, the index was uncapped. The index is calculated on a total-return basis with dividends reinvested. The index is unmanaged and not available for direct investment.

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. After-tax returns are shown only for Class I Shares; after-tax returns for other classes will vary. Actual after-tax returns depend on the investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold fund shares in tax-deferred accounts or to shares held by non-taxable entities. In certain cases, the Return After Taxes on Distributions and Sale of Fund Shares for a period may be higher than other return figures for the same period. This will occur when a capital loss is realized upon the sale of fund shares and provides an assumed tax benefit that increases the return.

Risk/Return:

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Risk [Text Block]

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If between the time you purchase shares and the time you sell shares the value of the fund’s investments decreases, you will lose money.

Risk/Return:

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Risk [Text Block]

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> Limited Number of Investments Risk: Because the fund may have a limited number of securities, it may be more susceptible to factors adversely affecting its securities than a fund with a greater number of securities.

Risk/Return:

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Risk [Text Block]

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> Depositary Receipts Risk: Investments in foreign companies through depositary receipts may expose the fund to the same risks as direct investments in securities of foreign issuers.

Risk/Return:

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Risk [Text Block]

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> Currency Rate Risk: Fluctuations in the exchange rates between the U.S. dollar and foreign currencies may negatively affect the value of the fund’s shares.

Risk/Return:

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Risk [Text Block]

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> Redemption Risk: One or more large shareholders or groups of shareholders may redeem their holdings in the fund, resulting in an adverse impact on remaining shareholders in the fund by causing the fund to take actions it would not otherwise have taken. The effects of taxable gains resulting from large redemptions of fund shares would particularly impact non-redeeming shareholders who do not hold their fund shares in a tax-advantaged or tax-exempt vehicle. Such large shareholder redemptions, which may occur rapidly or unexpectedly, may cause a fund to sell portfolio securities at times when it would not otherwise do so, which may negatively impact the fund’s NAV and liquidity. In addition, a large redemption could result in the fund’s current expenses being allocated over a smaller asset base, leading to an increase in the fund’s expense ratio.

Risk/Return:

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