Summary Prospectus by Investment Company (Form 497K)

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Lincoln Financial Investments Corporation (the "Adviser") has contractually agreed to waive the following portion of its advisory fee: 0.1025% on the first $350 million of the Fund's average daily net assets; 0.1125% on the next $175 million of the Fund's average daily net assets; 0.1225% on the next $175 million of the Fund's average daily net assets; and 0.1375% of the Fund's average daily net assets in excess of $700 million. The agreement will continue through at least April 30, 2027 and cannot be terminated before that date without the mutual agreement of the Fund's Board of Trustees and the Adviser.

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Market Risk. The value of portfolio investments may decline. As a result, your investment in the Fund may decline in value and you could lose money.

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Issuer Risk. The prices of, and the income generated by, portfolio securities may decline in response to various factors directly related to the issuers of such securities.

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Active Management Risk. The portfolio investments are actively-managed, rather than tracking an index or rigidly following certain rules, which may negatively affect investment performance. Consequently, there is the risk that the methods and analyses, including models, tools and data, employed in this process may be flawed or incorrect and may not produce desired results.

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Interest Rate Risk. When interest rates change, fixed income securities (i.e., debt obligations) generally will fluctuate in value. These fluctuations in value are greater for fixed income securities with longer maturities or durations.

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Credit Risk. Credit risk is the risk that the issuer of a debt obligation will be unable or unwilling to make interest or principal payments on time. Credit risk is often gauged by "credit ratings" assigned by nationally recognized statistical rating organizations (NRSROs). A decrease in an issuer's credit rating may cause a decline in the value of the issuer's debt obligations. However, credit ratings may not reflect the issuer's current financial condition or events since the security was last rated by a rating agency. Credit ratings also may be influenced by rating agency conflicts of interest or based on historical data that are no longer applicable or accurate.

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Prepayment/Call Risk. Debt securities are subject to prepayment risk when the issuer can "call" the security, or repay principal, in whole or in part, prior to the security's maturity. When the Fund reinvests the prepayments of principal it receives, it may receive a rate of interest that is lower than the rate on the called security.

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Below Investment Grade (Junk Bond) Risk. Below investment grade bonds, otherwise known as "high yield" bonds or "junk" bonds, generally have a greater risk of principal loss than investment grade bonds. Below investment grade bonds are often considered speculative and involve significantly higher credit risk and liquidity risk. The value of these bonds may fluctuate more than the value of higher-rated debt obligations, and may decline significantly in periods of general economic difficulty or periods of rising interest rates and may be subject to negative perceptions of the junk bond markets generally and less secondary market liquidity.

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Sovereign Debt Risk. Sovereign debt instruments are subject to the risk that a governmental entity may delay or refuse to pay interest or repay principal on its sovereign debt, due, for example, to cash flow problems, insufficient foreign currency reserves, political considerations, the relative size of the governmental entity's debt position in relation to the economy or the failure to put in place economic reforms required by the International Monetary Fund or other multilateral agencies.

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U.S. Treasury Risk. Securities backed by the U.S. Treasury or the full faith and credit of the U.S. government are guaranteed as to the timely payment of interest and principal when held to maturity. Accordingly, the current market values for these securities will fluctuate with changes in interest rates.

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Regional Risk. The Fund will generally have more exposure to the specific market, currency, economic, political, regulatory, geopolitical, or other risks in the regions or countries in which it invests. As a result, the Fund could experience substantial illiquidity, volatility or reduction in the value of its investments, as compared to a more geographically-diversified fund.

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Foreign Investments Risk. Foreign investments have additional risks that are not present when investing in U.S. investments. Foreign currency fluctuations or economic or financial instability could cause the value of foreign investments to fluctuate. The value of foreign investments may be reduced by foreign taxes, such as foreign taxes on interest and dividends. Additionally, foreign investments include the risk of loss from foreign government or political actions including, for example, the imposition of exchange controls, the imposition of tariffs, economic and trade sanctions or embargoes, confiscations, and other government restrictions, or from problems in registration, settlement or custody. Investing in foreign investments may involve risks resulting from the reduced availability of public information concerning issuers. Foreign investments may be less liquid and their prices more volatile than comparable investments in U.S. issuers. In addition, certain foreign countries may be subject to terrorism, governmental collapse, regional conflicts and war, which could negatively impact investments in those countries.

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Emerging Markets Risk. Companies located in emerging markets tend to be less liquid, have more volatile prices, and have significant potential for loss in comparison to investments in developed markets.

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Foreign Currency Risk. Foreign currency risk is the risk that the U.S. dollar value of foreign investments may be negatively affected by changes in foreign (non-U.S.) currency rates. Currency exchange rates may fluctuate significantly over short periods of time. In addition, currency management strategies may substantially change the Fund's exposure to currency exchange rates and could negatively affect the value of the Fund's foreign investments, if currencies do not perform as expected. Currency management strategies also may reduce the Fund's ability to benefit from favorable changes in currency exchange rates.

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Currency Management Strategy Risk. Currency management strategies, including cross-hedging, may substantially change exposure to currency exchange rates and could result in losses if currencies do not perform as expected. In addition, currency management strategies, to the extent that they reduce exposure to currency risks, also may reduce the ability to benefit from favorable changes in currency exchange rates. Furthermore, there may not be perfect correlation between the amount of exposure to a particular currency and the amount of securities in the portfolio denominated in that currency. Currency rates may also fluctuate significantly, reducing returns.

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Bond Connect (China and Hong Kong) Risk. Trading in bonds through the China - Hong Kong Bond Connect Program ("Bond Connect") is subject to certain restrictions and risks that may affect the Fund's investments and returns. Investments made through Bond Connect are subject to order, clearance and settlement procedures that are relatively untested in China, which could pose risks to the Fund. For example, there is the risk that the Fund may have a limited ability to enforce its rights as a bondholder. These risks are heightened by the underdeveloped state of the PROC's investment and banking systems in general.

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Derivatives Risk. Derivatives or other similar instruments (referred to collectively as "derivatives"), such as futures, forwards, options, swaps, structured securities and other similar instruments, are financial contracts whose value depends on, or is derived from, the value of an underlying asset, reference rate or index. Derivatives may involve costs and risks that are different from, or possibly greater than, the costs and risks associated with investing directly in securities and other traditional investments. Derivatives prices can be volatile, may correlate imperfectly with price of the applicable underlying asset, reference rate or index and may move in unexpected ways, especially in unusual market conditions, such as markets with high volatility or large market declines. Some derivatives are particularly sensitive to changes in interest rates. Other risks include liquidity risk, which refers to the potential inability to terminate or sell derivative positions and for derivatives to create margin delivery or settlement payment obligations for the Fund. Further, losses could result if the counterparty to a transaction does not perform as promised. Derivatives that involve a small initial investment relative to the investment risk assumed can magnify or otherwise increase investment losses. This is referred to as financial "leverage" due to the potential for greater investment loss. Derivatives are also subject to operational and legal risks.

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Hedging Risk. The success of a hedging strategy cannot be guaranteed. Effective hedging requires correctly assessing the degree of correlation between the performance of the instruments used in the hedging strategy and the performance of the

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Liquidity Risk. Liquidity risk is the risk that the Fund cannot meet requests to redeem Fund-issued shares without significantly diluting the remaining investors' interest in the Fund. This may result when portfolio holdings may be difficult to value and may be difficult to sell, both at the time or price desired. Liquidity risk also may result from increased shareholder redemptions in the Fund. Actions by governments and regulators may have the effect of reducing market liquidity, market resiliency and money supply. Liquidity risk also refers to the risk that the Fund may be required to hold additional cash or sell other investments in order to obtain cash to close out derivatives or meet the liquidity demands that derivatives can create to make payments of margin, collateral, or settlement payments to counterparties. The Fund may have to sell a security at a disadvantageous time or price to meet such obligations. The Fund's liquidity risk management program requires that the Fund invest no more than 15% of its net assets in illiquid investments.