Investment Objective

Seeks to provide total return.

Fees and Expenses of the Portfolio

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Portfolio. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. The table does not reflect fees or expenses that may be charged in connection with variable contracts issued by the insurance companies which offer the Portfolio as an underlying investment option. If such charges were included, the following fees and expenses would be higher.

Shareholder Fees (fees paid directly from your investment): —

Example. This Example is intended to help you compare the cost of investing your variable contract assets in the Portfolio with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. The costs indicated below do not reflect the additional expenses of variable contracts. These costs would be higher if variable contract charges were added. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Portfolio Turnover. The Portfolio 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. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 81% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Portfolio invests at least 80% of its net assets (plus borrowings for investment purposes, if any) in fixed-income investments. The Portfolio is managed by Federated Investment Management Company (“Federated Investment”) under a sub-advisory agreement with the Adviser.

The Portfolio pursues its investment objective by investing primarily in U.S. dollar denominated, investment-grade, fixed income securities. In addition, the Portfolio may invest in other fixed income investments including high-yield, non-U.S. dollar denominated fixed income securities and foreign currencies when Federated Investment considers the risk-return prospects of those sectors to be attractive. Federated Investment expects that, normally, no more than 15% of the Portfolio’s total assets will be invested in securities that are rated below investment grade. However, the Portfolio may opportunistically invest up to 25% of its total assets in noninvestment-grade debt securities (otherwise known as “junk bonds”). The maximum amount that the Portfolio may invest in non-U.S. dollar denominated fixed-income securities and foreign currencies is 20% of the Portfolio’s total assets. Investment-grade,

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fixed income securities are rated in one of the four highest categories (BBB- or higher) by a nationally recognized statistical rating organization (“NRSRO”). Noninvestment-grade, fixed-income securities are rated in one of the six lowest categories (BB or lower) by a NRSRO, or in either case if unrated, of comparable quality as determined by Federated Investment. Federated Investment seeks to enhance the Portfolio’s performance by allocating relatively more of its portfolio to the sectors that Federated Investment expects to offer the best balance between total return and risk and thus offer the greatest potential for return.

The Portfolio may invest in non-currency derivative contracts (such as, for example, futures contracts and option contracts) to implement its investment strategies. The Portfolio may also use derivative contracts to increase or decrease the Portfolio’s exposure to the investments underlying the derivative contracts in an attempt to benefit from changes in the value of the underlying investments. There can be no assurance that the Portfolio’s uses of derivatives contracts will work as intended. Derivative investments made by the Portfolio are included within the Portfolio’s 80% policy and are calculated at market value. Federated Investment may lengthen or shorten duration from time to time based on its interest rate outlook, but the Portfolio has no set duration parameters. Duration measures the price sensitivity of a fixed-income security to changes in interest rates. Certain of the government securities in which the Portfolio invests are not backed by the full faith and credit of the U.S. government, such as those issued by the Federal Home Loan Mortgage Corporation (“Freddie Mac”), the Federal National Mortgage Association (“Fannie Mae”) and the Federal Home Loan Bank System. These entities are, however, supported through federal subsidies, loans or other benefits. The Portfolio may also invest in government securities that are supported by the full faith and credit of the U.S. government, such as those issued by the Government National Mortgage Association (“Ginnie Mae”). Finally, the Portfolio may invest in certain government securities that are issued by entities whose activities are sponsored by the federal government but that have no explicit financial support.

Federated Investment actively manages the Portfolio seeking total returns over longer time periods in excess of the ICE BofA U.S. Broad Market Index. The ICE BofA U.S. Broad Market Index tracks the performance of U.S. dollar denominated investment grade debt publicly issued in the U.S. domestic market, including U.S. Treasury, quasi-government, corporate, securitized and collateralized securities.

Federated Investment utilizes a five-part decision making process, focusing on: (1) duration; (2) yield curve; (3) sector allocation; (4) security selection; and (5) currency management. This five-part investment process is designed to capitalize on the depth of experience and focus of each of Federated Investment’s fixed-income sector teams – government, corporate, mortgage-backed, asset-backed, high-yield and international. There can be no assurance that Federated Investment will be successful in achieving investment returns in excess of the ICE BofA U.S. Broad Market Index.

When selecting investments for the Portfolio, the Portfolio can invest in securities directly or in other investment companies, including, for example, funds advised by Federated Investment or its affiliates (which are not available for general investment by the public), as an efficient means of implementing its investment strategies.

Principal Risks

There is no assurance that the Portfolio will meet its investment objective. The value of your investment in the Portfolio and the amount of the return you receive on your investment may fluctuate significantly. You could lose money, or have less return than the market in general, by investing in the Portfolio. The principal risks of investing in the Portfolio are:

Call or Prepayment Risk — During periods of falling interest rates, a bond issuer may “call” or repay its high-yielding bond before the bond’s maturity date. If forced to invest the unanticipated proceeds at lower interest rates, the Portfolio would experience a decline in income. The ability of an issuer of a debt security to repay principal prior to a security’s maturity can cause greater price volatility if interest rates change.

Credit Risk — The Portfolio may lose money if the issuer or guarantor of a fixed income security is unable or unwilling to make scheduled interest or principal payments, which may reduce the Portfolio’s income and market value.

Currency Risk — Exchange rates for currencies fluctuate daily. The Portfolio’s net asset value and returns may experience increased volatility as a result of its exposure to foreign currencies through direct holdings of such currencies or holdings of non-U.S. dollar denominated securities.

Derivatives Risk — Derivatives can be highly volatile and involve risks in addition to the risks of the underlying referenced securities. Using derivatives can increase fund losses and reduce opportunities for gains when market prices, interest rates or the derivative instruments themselves behave in a way not anticipated by the Portfolio. Derivatives may be difficult to sell, unwind or value, and the counterparty may default on its obligations to the Portfolio. Changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index and the Portfolio could lose more than the principal amount invested. In addition to investing in derivatives to implement its strategy, the Portfolio may also use derivative instruments for hedging purposes, in an attempt to

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reduce the risk of loss from falling stock prices or lower foreign currency valuations, increased interest rates or other adverse market developments. There can be no assurance that a hedging technique will work as intended. Portfolio performance may be diminished by the added cost of the derivative instruments.

Foreign Investments Risk — Foreign investments involve risks not normally encountered with domestic securities. These include political, regulatory and economic instability in some countries, the imposition of economic sanctions, changes in currency rates and market inefficiencies. The laws of some foreign countries may limit the Portfolio’s ability to invest in securities of certain issuers organized under the laws of those countries. Trade tensions and economic sanctions on individuals and companies can contribute to market volatility. This may adversely impact the Portfolio’s performance.

Emerging Markets Risk — Securities issued or traded in emerging markets generally entail greater risks than securities issued or traded in developed markets. Emerging market countries may have relatively unstable governments and may present the risk of nationalization of business, expropriation, confiscatory taxation or, in certain instances, reversion to closed market, centrally planned economies. Differences in regulatory, accounting, auditing and financial reporting and recordkeeping standards could impede the ability to evaluate local companies or impact the Portfolio’s performance. The typically small size of the markets of securities of issuers located in emerging markets and the possibility of a low or nonexistent volume of trading in those securities may also result in a lack of liquidity and in price volatility of those securities.

Government Securities Risk — Not all obligations of the U.S. government, its agencies and instrumentalities are backed by the full faith and credit of the U.S. government. Some obligations are backed only by the credit of the issuing agency or instrumentality, and, in some cases, there may be some risk of default by the issuer. Any guarantee by the U.S. government or its agencies or instrumentalities of a security the Portfolio holds does not apply to the market value of the security or to shares of the Portfolio. A security backed by the U.S. Treasury or the full faith and credit of the U.S. government is guaranteed only as to the timely payment of interest and principal when held to maturity. The risks associated with an investment in Credit Risk Transfer securities (“CRTs”) differ from the risks associated with an investment in mortgage-backed securities issued by Government Sponsored Enterprises (“GSEs”) because, in CRTs, some or all of the credit risk associated with the underlying mortgage loans is transferred to the end-investor.

Interest Rate Risk — Prices of fixed-income securities rise and fall in response to changes in the interest rates paid by similar securities. Generally, when interest rates rise, prices of fixed-income securities fall. However, market factors, such as the demand for particular fixed-income securities, may cause the price of certain fixed-income securities to fall while the prices of other securities rise or remain unchanged. Interest rate changes have a greater effect on the price of fixed-income securities with longer maturities. A wide variety of market factors can affect interest rates. Recent and potential future changes in monetary policy made by central banks and/or their governments are likely to affect the level of interest rates. The Portfolio may be subject to heightened interest rate risk due to certain changes in monetary policy. Rising interest rates may expose fixed-income markets to increased volatility and may reduce the liquidity of certain Portfolio investments. These developments also could cause more fluctuation in the Portfolio’s net asset value or make it more difficult for the Portfolio to accurately value its securities. These developments or others could also cause the Portfolio to face increased shareholder redemptions, which could force the Portfolio to liquidate investments at disadvantageous times or prices, therefore adversely affecting the Portfolio as well as the value of your investment.

LIBOR Risk — Instruments in which the underlying funds invest may pay interest based on the London Interbank Offered Rate (“LIBOR”). The phase out of the three-, six- and twelve-month U.S. dollar LIBOR settings has been delayed until mid-2023, but all other LIBOR settings, including the one-week and two-month U.S. dollar LIBOR settings have already been phased out. The Federal Reserve has designated the Secured Overnight Financing Rate (“SOFR”) as the replacement rate in certain financial instruments after June 23, 2023. The nature of the impact of the transition away from LIBOR on the underlying funds, issuers of instruments in which the underlying funds invest, and financial markets generally is unknown.

Issuer Risk — The value of a security may decline for reasons related to the issuer, such as earnings stability, overall financial soundness, management performance and reduced demand for the issuer’s goods or services.

Leverage Risk — Leverage risk is created when an investment (such as a derivative transaction) exposes the Portfolio to a level of risk that exceeds the amount invested. Changes in the value of such an investment magnify the Portfolio’s risk of loss and potential for gain.

Liquidity Risk — The fixed-income securities in which the Portfolio invests may be less readily marketable and may be subject to greater fluctuation in price than other securities. Liquidity risk also refers to the possibility that the Portfolio may not be able to sell a security or close out a derivative contract when it wants to. If this happens, the Portfolio could incur losses. The amount of assets deemed illiquid remaining within the Portfolio may also increase, making it more difficult to meet shareholder redemptions and further adversely affecting the value of the Portfolio.

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Lower-Rated Debt Securities Risk — Bonds rated below investment grade, which is defined as BB or lower (also called “junk bonds”), are subject to greater levels of interest rate, credit and liquidity risks. They are considered primarily speculative with respect to the issuer’s continuing ability to make principal and interest payments.

Market Risk — A security’s price may change in response to changes in conditions in securities markets in general. Markets tend to move in cycles with periods of rising prices and periods of falling prices. They can decline for many reasons, including adverse political or economic developments domestically or abroad, changes in investor psychology, or heavy institutional selling. In the case of debt securities, changes in the overall level of interest rates affect the security’s price. A significant national or international event, natural disaster or widespread health crisis, such as the COVID-19 global pandemic, could cause substantial market volatility, exchange trading suspensions and closures, severe market dislocations and liquidity constraints, impact the ability to complete redemptions, and affect the Portfolio’s performance.

Mortgage Backed Securities Risk — A rise in interest rates may cause the value of mortgage backed securities (“MBS”) held by the Portfolio to decline. Certain MBS issued by government sponsored enterprises (“GSEs”) are not backed by the full faith and credit of the U.S. government. A non-agency MBS is subject to the risk that the value of such security will decline, because the security is not issued or guaranteed as to principal or interest by the U.S. government or a GSE. The Portfolio’s investments in collateralized mortgage obligations (“CMOs”) may entail greater market, prepayment and liquidity risks than other MBS.

Underlying Fund Risk — The risk that the Portfolio’s performance is closely related to the risks associated with the securities and other investments held by underlying funds and that the ability of the Portfolio to achieve its investment objective will depend upon the ability of underlying funds to achieve their respective investment objectives. The Portfolio bears underlying fund fees and expenses indirectly.

Performance

The accompanying bar chart and table provide some indication of the risks of investing in the Portfolio. They show changes in the Portfolio’s performance for the last two years and the Portfolio’s average annual returns for the last one year and since inception compared to those of a broad-based securities market index. The Portfolio’s past performance does not necessarily indicate how it will perform in the future. Variable contract charges are not reflected in the chart or table. If they were, the returns would be less than those shown.

Since inception, the Portfolio’s highest return for a quarter was 1.77%. That was for the quarter ended on June 30, 2021. The lowest return for a quarter was -5.44%. That was for the quarter ended on March 31, 2022. To obtain performance information up to the most recent month end, call toll free 877.781.6392.

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Management

Ohio National Investments, Inc. serves as the investment adviser for the Portfolio. Federated Investment serves as the investment sub-adviser for the Portfolio. Federated Investment has been a sub-adviser for the Portfolio since May 1, 2020. Donald T. Ellenberger, a Senior Vice President, Senior Portfolio Manager and Head of the Multi-Sector Strategies Group of Federated Investment, Chengjun (Chris) Wu, CFA, a Vice President, Senior Portfolio Manager of Federated Investment and Jerome Conner, CFA, a Vice President, Senior Portfolio Manager of Federated Investment, have been portfolio managers of the Portfolio since May 2020.

Purchase and Sale of Fund Shares

Shares of the Portfolio are offered only to separate accounts of insurance companies, which use the Portfolio shares as an underlying investment for variable contracts, and to portfolios of the Fund in connection with ONLIC’s and NSLAC’s variable contracts. You may select funds and make transfers among fund options as described in your variable contract prospectus. The separate accounts of the insurance companies may purchase and redeem Portfolio shares, at their net asset value next computed after the receipt of an order to purchase or redeem Portfolio shares, on each day the New York Stock Exchange is open for unrestricted trading. Please read your variable contract prospectus for more information about your variable contract.

Tax Information

The tax treatment of payments made from a variable contract is described in the contract’s prospectus. Generally, contract owners are not taxed on income or gains realized within their contract until they receive payments from the contract.

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