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: 0.097% on the first $1 billion of the Fund's average daily net assets; and 0.145% of the Fund's average daily net assets in excess of $1 billion. 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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Stock/Equity Investing Risk. Stocks and other equities generally fluctuate in value more than bonds and may decline significantly over short time periods. Equity prices overall may decline because stock markets tend to move in cycles, with periods of rising and falling prices.

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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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Passive Management Risk. Index funds invest in the securities of an index rather than actively selecting among securities. With an indexing strategy there is no attempt to manage volatility, use defensive strategies, or reduce the effects of any long-term period of poor investment performance.

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Tracking Error Risk. The Fund's performance may deviate substantially from the performance of the Index it tracks as a result of cash flows, Fund expenses, imperfect correlation between the Fund's investments and the Index's components, and other factors. While attempting to replicate the Index return, the Fund may invest in fewer than all of the securities in the Index and in some securities not included in the Index, potentially increasing the risk of divergence between the Fund's return and that of the Index.

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Value Stocks Risk. Value stocks tend to be inexpensive relative to their earnings or assets compared to other types of stocks, such as growth stocks. Value stocks can continue to be inexpensive for long periods of time, may not ever realize their potential value, and may even go down in price.

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Growth Stocks Risk. Growth stocks, due to their relatively high market valuations, typically have been more volatile than value stocks. Growth stocks may not pay dividends, or may pay lower dividends, than value stocks and may be more adversely affected in a down market.

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Medium-Cap Company Risk. The value of securities issued by medium-sized companies may be subject to more abrupt market movements and may involve greater risks than investments in larger companies. These less developed, lesser-known companies may experience greater risks than those normally associated with larger companies. This is due to, among other things, the greater business risks of smaller size and limited product lines, markets, distribution channels, and financial and managerial resources.

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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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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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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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Exchange-Traded Fund (ETF) Risk. ETFs generally reflect the risks of owning the underlying securities they hold, although lack of liquidity in ETF shares could result in the price of the ETF being more volatile.

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Futures Risk. A futures contract is considered a derivative because it derives its value from the price of the underlying security or financial index. The prices of futures contracts can be volatile, and futures contracts may be illiquid. In addition, there may be imperfect or even negative correlation between the price of the futures contracts and the price of the underlying securities. Losses on futures contracts may exceed the amount invested.

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Depositary Receipts Risk. Depositary receipts are receipts issued by a bank or trust company and evidence ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts or Global Depositary Receipts. Depositary receipts are subject to the risks usually associated with foreign securities, including risks associated with investing in the particular country, including the political, regulatory, economic, social and other conditions or events occurring in the country, as well as fluctuations in its currency. In addition, depositary receipt holders may not have all the legal rights of shareholders and may experience difficulty in receiving shareholder communications.

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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.