Investment Objective

Fees and Expenses of the Fund

Shareholder Fees (fees paid directly from your investment)

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

Example

Expense Example - (American Beacon SiM High Yield Opportunities Fund℠) - USD ($)	1 Year	3 Years	5 Years	10 Years
Class A	589	829	1,088	1,828
Class C	292	594	1,021	2,212
Class Y	93	290	504	1,120
Institutional Class	86	268	466	1,037
Investor Class	117	365	633	1,398

Expense Example, No Redemption - (American Beacon SiM High Yield Opportunities Fund℠)	1 Year	3 Years	5 Years	10 Years
Class C \| USD ($)	192	594	1,021	2,212

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 44% of the average value of its portfolio.

This Fund seeks to maximize current income by investing in a diversified portfolio of fixed income securities that are generally rated below investment grade (such as Ba or lower by Moody's Investors Service, Inc. or BB or lower by S&P Global Ratings or Fitch, Inc.) or deemed to be below investment grade by the Fund's sub-advisor, Strategic Income Management, LLC ("SiM"). These types of securities are commonly referred to as "high yield" or "junk" bonds.

The Fund seeks to achieve its investment objective by investing, under normal circumstances, at least 80% of the Fund's net assets (plus the amount of any borrowing for investment purposes) in non-investment grade securities and/or financial instruments that provide exposure to non-investment grade securities. These financial instruments include futures contracts (including futures contracts on stock indices and currencies), forward contracts (including currency forward contracts, and non-deliverable forward ("NDF") contracts), swap agreements and structured notes whose underlying assets are rated below investment grade.

The non-investment grade securities in which the Fund may invest include: corporate bonds, convertible securities, preferred stock, bank and senior loans, variable and floating rate loans, emerging market debt, municipal securities, asset-backed and mortgage-backed securities, and Rule 144A securities. The Fund may invest in securities of foreign issuers, including those in emerging markets. The Fund has no limitations regarding the maturities of the debt securities it can buy, the market capitalization of the issuers of those securities or whether the securities are rated.

The Fund's investments in derivative instruments include futures contracts, forward contracts, options, swap agreements (including total return swaps, credit default swaps and currency swaps) and structured notes. The Fund may use these derivative instruments to enhance total return, to hedge against fluctuations in securities prices, interest rates or currency exchange rates, to manage the effective duration of its portfolio, and to manage certain investment risks or as a substitute for purchase or sale of the underlying currencies or securities.

The Fund may have exposure to foreign currencies for investment or hedging purposes by purchasing or selling forward currency exchange contracts in non-U.S. or emerging market currencies, and non-U.S. currency futures contracts. The Fund may also make direct investments in non-U.S. currencies and in securities denominated in non-U.S. currencies. Investments in currencies and currency hedging are established to extract value or reduce risk.

The remainder of the Fund's assets may be invested in any other securities that SiM believes are consistent with the Fund's objective, including investment grade fixed-income securities, U.S. government securities, common stock, American Depositary Receipts ("ADRs") and Global Depositary Receipts ("GDRs"), real estate investment trusts ("REITs"), loan participation interests, and income-producing equity securities, such as master limited partnerships ("MLPs"), and income trusts and income deposit securities ("IDSs"). The Fund may invest cash balances in exchange-traded funds to gain market exposure on cash balances.

In selecting investments for the Fund, SiM uses an approach that combines different aspects of top down and bottom up analysis. As part of its top down analysis, SiM utilizes a core philosophy to identify positive long-term trends. SiM then invests in sectors, industries and companies that will benefit from these trends. Concurrent with this core philosophy, SiM's management seeks to take advantage of market volatility by analyzing and potentially investing in sectors, industries and companies undergoing a change in dynamics that has not been fully recognized by the market. Market volatility continually provides opportunities to capture value from these types of situations. Once potential investment opportunities are identified, SiM utilizes bottom up research to assess the fundamental strengths and weaknesses of each individual company and the best risk/reward security is chosen for inclusion in the portfolio. The Fund may have significant exposure to the Consumer Staples sector. However, as the sector composition of the Fund's portfolio changes over time, the Fund's exposure to the Consumer Staples sector may be lower at a future date, and the Fund's exposure to other market sectors may be higher.

SiM may reduce or sell the Fund's portfolio securities for a variety of reasons, including if, in SiM's opinion, a security's value becomes fully recognized or there is a reassessment of the fundamental attributes of the security.

There is no assurance that the Fund will achieve its investment objectives and you could lose part or all of your investment in the Fund. The Fund is designed primarily for investors seeking current income from a fund that typically invests mainly in a variety of domestic and foreign high-yield, high-risk debt securities. Those investors should be willing to assume the credit risks of a fund that typically invests a significant amount of its assets in below investment-grade debt securities and the price changes in those securities that can occur when interest rates change. The Fund is not designed for investors who need an assured level of current income. The Fund is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund listed below are presented in alphabetical order, and not in order of importance or potential exposure, to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.

Allocation Risk
The sub-advisor's judgments about, and allocations among, strategies, asset classes and market exposures may adversely affect the Fund's performance. There can be no assurance, particularly during periods of market disruption and stress, that the sub-advisor's judgements about asset allocation will be correct. This risk may be increased by the use of derivatives to increase allocations to various market exposures.

Asset-Backed and Mortgage Related Securities Risk
Investments in asset-backed and mortgage related securities are subject to market risks for fixed-income securities which include, but are not limited to, credit risk, interest rate risk, prepayment risk and extension risk. A decline in the credit quality of the issuers of asset-backed and mortgage related securities or instability in the markets for such securities may affect the value and liquidity of such securities, which could result in losses to the Fund.

Convertible Securities Risk
The value of a convertible security typically increases or decreases with the price of the underlying common stock. In general, a convertible security is subject to the risks of stocks when the underlying stock's price is high relative to the conversion price and is subject to the risks of debt securities when the underlying stock's price is low relative to the conversion price. The general market risks of debt securities that are common to convertible securities include, but are not limited to, interest rate risk and credit risk. Many convertible securities have credit ratings that are below investment grade and are subject to the same risks as an investment in below investment grade debt securities (commonly known as "junk bonds"). Lower-rated debt securities may fluctuate more widely in price and yield than investment grade debt securities and may fall in price during times when the economy is weak or is expected to become weak. Convertible securities are subject to the risk that the credit standing of the issuer may have an effect on the convertible security's investment value. In addition, to the extent the Fund invests in convertible securities issued by small- or mid-cap companies, it will be subject to the risks of investing in such companies. The stocks of small- and mid-cap companies may fluctuate more widely in price than the market as a whole and there may also be less trading in small- or mid-cap stocks. Convertible securities are sensitive to movement in interest rates.

Counterparty Risk
The Fund is subject to the risk that a party or participant to a transaction, such as a broker or derivative counterparty, will be unwilling or unable to satisfy its obligation to make timely principal, interest or settlement payments or to otherwise honor its obligations to the Fund.

Credit Risk
The Fund is subject to the risk that the issuer or guarantor of an obligation, or the counterparty to a transaction, including a derivatives contract or a loan, may fail, or become less able, to make timely payment of interest or principal or otherwise honor its obligations or default completely. Credit risk is typically greater for securities with ratings that are below investment grade (commonly referred to as "junk bonds"). Since the Fund can invest significantly in high yield investments that are considered speculative in nature, this risk may be substantial. Changes in the actual or perceived creditworthiness of an issuer, or a downgrade or default affecting any of the Fund's securities, could affect the Fund's performance.

Currency Risk
The Fund may have exposure to foreign currencies by using various instruments described below. Foreign currencies may fluctuate significantly over short periods of time, may be affected unpredictably by intervention, or the failure to intervene, of the U.S. or foreign governments or central banks, and may be affected by currency controls or political developments in the U.S. or abroad. Foreign currencies may also decline in value relative to the U.S. dollar and other currencies and thereby affect the Fund's investments in non-U.S. currencies or in securities that trade in, and receive revenues in, or in derivatives that provide exposure to, non-U.S. currencies. The Fund may gain exposure to foreign currencies because of its investments in one or more of the following:

Securities denominated in non-U.S. currencies

Foreign currency forward contracts, which are described below under "Derivatives Risk"

Non-U.S. currency futures contracts, which are described below under "Derivatives Risk"

Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems: human errors, systems and technology disruptions or failures, or cybersecurity incidents. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers, as well as the securities trading venues and their service providers, to suffer data corruption or lose operational functionality. It is not possible for the Fund or its service providers to identify all of the operational risks that may affect the Fund or to develop processes and controls to completely eliminate or mitigate their occurrence or effects. Most issuers in which the Fund invests are heavily dependent on computers for data storage and operations, and require ready access to the internet to conduct their business. Thus, cybersecurity incidents could also affect issuers of securities in which the Fund invests, leading to significant loss of value.

Derivatives Risk
Derivatives may involve significant risk. The use of derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities or other instruments underlying those derivatives, including the high degree of leverage often embedded in such instruments, and potential material and prolonged deviations between the theoretical value and realizable value of a derivative. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. Derivatives may at times be illiquid, and the Fund may not be able to close out or sell a derivative at a particular time or at an anticipated price. Certain derivatives may be difficult to value, and valuation may be more difficult in times of market turmoil. Derivatives may also be more volatile than other types of investments. The Fund may buy or sell derivatives not traded on an exchange, which may be subject to heightened liquidity and valuation risk. Derivative investments can increase portfolio turnover and transaction costs. Derivatives also are subject to counterparty risk and credit risk. As a result, the Fund may not recover its investment or may only obtain a limited recovery, and any recovery may be delayed. Not all derivative transactions require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. Ongoing changes to the regulation of the derivatives markets and potential changes in the regulation of funds using derivative instruments could limit the Fund's ability to pursue its investment strategies. New regulation of derivatives may make them more costly, or may otherwise adversely affect their liquidity, value or performance. In addition, the Fund's investments in derivatives are subject to the following risks:

Futures and Forward Contracts Risk. Futures and forward contracts, including NDFs, are derivative instruments pursuant to a contract where the parties agree to a fixed price for an agreed amount of securities or other underlying assets at an agreed date or to buy or sell a specific currency at a future date at a price set at the time of the contract. There may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There are no limitations on daily price movements of forward contracts. There can be no assurance that any strategy used will succeed. Not all forward contracts, including NDFs, require a counterparty to post collateral, which may expose the Fund to greater losses in the event of a default by a counterparty. There can be no assurance that, at all times, a liquid market will exist for offsetting a futures contract that the Fund has previously bought or sold and this may result in the inability to close a futures contract when desired. Forward currency transactions, including NDFs, and forward currency contracts include the risks associated with fluctuations in currency. Interest rate and Treasury futures contracts expose the Fund to price fluctuations resulting from changes in interest rates. The Fund could suffer a loss if interest rates rise after the Fund has purchased an interest rate futures contract or fall after the Fund has sold an interest rate futures contract. Similarly, Treasury futures contracts expose the Fund to potential losses if interest rates do not move as expected. Equity index futures contracts expose the Fund to volatility in an underlying securities index.

Options Risk. In order for a call option to be profitable, the market price of the underlying security or index must rise sufficiently above the call option exercise price to cover the premium and any transaction costs. These costs will reduce any profit that might otherwise have been realized had the Fund bought the underlying security instead of the call option. For a put option to be profitable, the market price of the underlying security or index must decline sufficiently below the put option's exercise price to cover the premium and any transaction costs. By using put options in this manner, the Fund will reduce any profit it might otherwise have realized from having shorted the declining underlying security by the premium paid for the put option and by transaction costs. If an option that the Fund has purchased expires unexercised, the Fund will experience a loss in the amount of the premium it paid. If the Fund sells a put option, there is a risk that the Fund may be required to buy the underlying asset at a disadvantageous price. If the Fund sells a call option, there is a risk that the Fund may be required to sell the underlying asset at a disadvantageous price. If the Fund sells a call option on an underlying asset that the Fund owns, and the underlying asset has increased in value when the call option is exercised, the Fund will be required to sell the underlying asset at the call price and will not be able to realize any of the underlying asset's value above the call price. If a call option that the Fund has sold is unexercised, the Fund will experience a gain or loss from the sale of the underlying instrument. If a call option that the Fund has sold is unexercised, the Fund will experience a gain or loss from the sale of the underlying instrument. There can be no guarantee that the use of options will increase the Fund's return or income. In addition, there may be an imperfect correlation between the movement in prices of options and the securities underlying them, and there may at times not be a liquid secondary market for options.

Structured Notes Risk. Structured notes are derivative debt instruments with principal and/or interest payments linked to the value of a commodity, a foreign currency, an index of securities, an interest rate, or other financial indicators ("reference instruments"). The payments on a structured note may vary based on changes in one or more specified reference instruments, such as a floating interest rate compared to a fixed interest rate, the exchange rates between two currencies, one or more securities or a securities or commodities index. If the underlying investment or index does not perform as anticipated, the structured note might pay less interest than the stated coupon payment or repay less principal upon maturity. The movement of such factors may cause significant price fluctuations. A structured note may be positively or negatively indexed. Structured notes are subject to interest rate risk and market risk. They are also subject to credit risk with respect both to the issuer and, if applicable, to the underlying security or borrower. Structured notes may have a limited trading market, making it difficult to value them or sell them at an acceptable price.

Swap Agreements Risk. Swaps can involve greater risks than a direct investment in an underlying asset, because swaps typically include a certain amount of embedded leverage and as such are subject to leverage risk. If swaps are used as a hedging strategy, the Fund is subject to the risk that the hedging strategy may not eliminate the risk that it is intended to offset, due to, among other reasons, the occurrence of unexpected price movements or the non-occurrence of expected price movements. Swaps also may be difficult to value. Swaps may be subject to liquidity risk and counterparty risk, and swaps that are traded over-the-counter are not subject to standardized clearing requirements and may involve greater liquidity and counterparty risks. In addition, the Fund may invest in the following types of swaps:

Credit default swaps, which may be subject to credit risk and the risks associated with the purchase and sale of credit protection.

Cross-currency swaps, which may be subject to currency risk and credit risk.

Total return swaps, which may be subject to credit risk and, if the underlying securities are bonds or other debt obligations, market risk and interest rate risk.

Dividend Risk
An issuer of stock held by the Fund may choose not to declare a dividend or the dividend rate might not remain at current levels. Dividend paying stocks might not experience the same level of earnings growth or capital appreciation as non-dividend paying stocks.

Emerging Markets Risk
When investing in emerging markets, the risks of investing in foreign securities, as discussed below, are heightened. Emerging markets are generally smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other developed markets. There are also risks of: greater political uncertainties; an economy's dependence on revenues from particular commodities or on international aid or development assistance; currency transfer restrictions; a limited number of potential buyers for such securities resulting in increased volatility and limited liquidity for emerging market securities; trading suspensions; and delays and disruptions in securities settlement procedures. The governments of emerging market countries may also be more unstable and more likely to impose capital controls, nationalize a company or industry, place restrictions on foreign ownership and on withdrawing sale proceeds of securities from the country, intervene in the financial markets, and/or impose burdensome taxes that could adversely affect security prices. In addition, there may be less publicly available information about issuers in emerging markets than would be available about issuers in more developed capital markets, and such issuers may not be subject to accounting, auditing and financial reporting standards and requirements comparable to those to which U.S. companies are subject.

Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:

Common Stock Risk. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.

Depositary Receipts Risk. Depositary receipts are subject to certain of the risks associated with investing directly in foreign securities, including, but not limited to, currency exchange rate fluctuations, political and financial instability in the home country of a particular depositary receipt, less liquidity and more volatility, less government regulation and supervision and delays in transaction settlement.

Income Deposit Securities Risk. Although income deposit securities ("IDSs"), which are units representing shares of common stock and subordinated notes issued by a company, trade on an exchange, there may be a thinner and less active market for IDSs than that available for other securities. The value of an IDS will be affected by factors generally affecting both common stock and subordinated debt securities. IDSs are subject to credit risk, interest rate risk and dividend risk.

Income Trusts Risk. Income trusts are subject to credit risk, interest rate risk and dividend risk. Income trusts, which hold income producing assets and pass the income on to security holders, share many of the risks inherent in stock ownership. Income trusts may also lack diversification and potential growth may be sacrificed because revenue is passed on to security holders, rather than reinvested in the business.

Master Limited Partnerships ("MLPs") Risk. Investing in MLPs involves certain risks related to investing in the underlying assets of the MLPs and risks associated with pooled investment vehicles. Holders of units in MLPs have more limited rights to vote on matters affecting the partnership and may be required to sell their common units at an undesirable time or price. The Fund's investments in MLPs may also make it more difficult for the Fund to meet the requirements necessary to qualify as a "regulated investment company" under the Internal Revenue Code of 1986, as amended ("Internal Revenue Code").

Preferred Stock Risk. Preferred stocks are sensitive to movements in interest rates. Preferred stocks may be less liquid than common stocks and, unlike common stocks, participation in the growth of an issuer may be limited. Distributions on preferred stocks generally are payable at the discretion of an issuer and after required payments to bond holders. In certain situations, an issuer may call or redeem its preferred stock or convert it to common stock. The market prices of preferred stocks are generally more sensitive to actual or perceived changes in the issuer's financial condition or prospects than are the prices of debt securities.

Real Estate Investment Trusts ("REITs") Risk. Investments in REITs are subject to the risks associated with investing in the real estate industry, including, among other risks: adverse developments affecting the real estate industry; declines in real property values; changes in interest rates; defaults by mortgagors or other borrowers and tenants; lack of availability of mortgage funds or financing; extended vacancies of properties, especially during economic downturns; casualty or condemnation losses; and governmental actions, such as changes to tax laws, zoning regulations or environmental regulations. REITs also are dependent upon the skills of their managers and are subject to heavy cash flow dependency or self-liquidation. Domestic REITs could be adversely affected by failure to qualify for tax-free "pass-through" of distributed net income and net realized gains under the Internal Revenue Code of 1986, as amended ("Internal Revenue Code"), or to maintain their exemption from registration under the Investment Company Act of 1940, as amended ("Investment Company Act"). REITs typically incur fees that are separate from those incurred by the Fund. Accordingly, the Fund's investment in REITs will result in the layering of expenses such that shareholders will indirectly bear a proportionate share of the REITs' operating expenses, in addition to paying Fund expenses. The value of REIT common stock may decline when interest rates rise.

Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased volatility, (6) different government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.

Hedging Risk
If the Fund uses a hedging instrument at the wrong time or judges the market conditions incorrectly, or the hedged instrument does not correlate to the risk sought to be hedged, the hedge might be unsuccessful, reduce the Fund's return, or create a loss. In addition, hedges, even when successful in mitigating risk, may not prevent the Fund from experiencing losses on its investments. Hedging instruments may also reduce or eliminate gains that may otherwise have been available had the Fund not used the hedging instruments.

High Yield Securities Risk
Exposure to high yield, below investment-grade securities (commonly referred to as "junk bonds") generally involves significantly greater risks than an investment in investment grade securities. High yield debt securities may fluctuate more widely in price and yield and may fall in price when the economy is weak or expected to become weak. These securities also may be difficult to sell at the time and price the Fund desires. High yield securities are considered to be speculative with respect to an issuer's ability to pay interest and principal and carry a greater risk that the issuers of lower-rated securities will default on the timely payment of principal and interest. High yield securities may experience greater price volatility and less liquidity than investment grade securities. Issuers of securities that are in default or have defaulted may fail to resume principal or interest payments, in which case the Fund may lose its entire investment.

Illiquid and Restricted Securities Risk
Securities not registered in the U.S. under the Securities Act of 1933, as amended (the "Securities Act") or in non-U.S. markets pursuant to similar regulations, including Rule 144A securities, are restricted as to their resale. Such securities may not be listed on an exchange and may have no active trading market. The prices of these securities may be more difficult to determine than publicly traded securities and these securities may involve heightened risk as compared to investments in securities of publicly traded companies. They may be more difficult to purchase or sell at an advantageous time or price because such securities may not be readily marketable in broad public markets, or may have to be held for a certain time period before they can be resold. The Fund may not be able to sell a restricted security when a sub-advisor considers it desirable to do so and/or may have to sell the security at a lower price than the Fund believes is its fair market value. In addition, transaction costs may be higher for restricted securities and the Fund may receive only limited information regarding the issuer of a restricted security. The Fund may have to bear the expense of registering restricted securities for resale and the risk of substantial delays in effecting the registration.

Interest Rate Risk
The Fund is subject to the risk that the market value of fixed income securities or derivatives it holds will decline due to rising interest rates. Generally, the value of investments with interest rate risk, such as fixed income securities, will move in the opposite direction to movements in interest rates. The Federal Reserve has raised the federal funds rate several times since December 2015 and may increase or decrease rates in the future. Interest rates may rise, perhaps significantly and/or rapidly, potentially resulting in substantial losses to the Fund. The prices of fixed income securities or derivatives are also affected by their durations. Fixed income securities or derivatives with longer durations generally have greater sensitivity to changes in interest rates. For example, if a bond has a duration of eight years, a 1% increase in interest rates could be expected to result in an 8% decrease in the value of the bond. An increase in interest rates can impact markets broadly as well. Some investors buy securities and derivatives with borrowed money; an increase in interest rates can cause a decline in those markets. To the extent the Fund holds an investment with a negative interest rate to maturity, the Fund would generate a negative return on that investment.

Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.

Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Leverage Risk
The Fund's use of derivative instruments will have the economic effect of financial leverage. Financial leverage magnifies the exposure to the swings in prices of an asset or class of assets underlying a derivative instrument and may result in increased volatility, which means that the Fund will have the potential for greater losses than if the Fund does not use the derivative instruments that have a leveraging effect. Leverage may result in losses that exceed the amount originally invested and may accelerate the rate of losses. Leverage tends to magnify, sometimes significantly, the effect of any increase or decrease in the Fund's exposure to an asset or class of assets and may cause the Fund's net asset value ("NAV") per share to be volatile. There can be no assurance that the Fund's use of leverage will be successful.

Liquidity Risk
The Fund is susceptible to the risk that certain investments held by the Fund may have limited marketability, be subject to restrictions on sale, be difficult or impossible to purchase or sell at favorable times or prices, or become less liquid in response to market developments or adverse credit events that may affect issuers or guarantors of a security. An inability to sell a portfolio position can adversely affect the Fund's value or prevent the Fund from being able to take advantage of other investment opportunities. Market prices for such instruments may be volatile. The Fund could lose money if it is unable to dispose of an investment at a time that is most beneficial to the Fund. The Fund may be required to dispose of investments at unfavorable times or prices to satisfy obligations, which may result in losses or may be costly to the Fund. For example, liquidity risk may be magnified in rising interest rate environments due to higher than normal redemption rates. Unexpected redemptions may force the Fund to sell certain investments at unfavorable prices to meet redemption requests or other cash needs. Judgment plays a greater role in pricing illiquid investments than in investments with more active markets.

Loan Interests Risk
In making investments in bank loans or senior loans, the Fund will depend primarily on the creditworthiness of the borrower for payment of principal and interest, and will also rely on the financial institution to make principal and interest payments to the Fund once it receives payment on the underlying loan. The Fund will also rely on the financial institution to pursue appropriate remedies against a borrower in the event that the borrower defaults. As such, the Fund may be exposed to the credit risk of both the financial institution that made the loan and the underlying borrower. Unlike publicly traded common stocks, which trade on national exchanges, there is no central place or exchange for loans, including bank loans and senior loans, to trade. There is a risk that the value of any collateral securing a loan in which the Fund has an interest may decline and that the collateral may not be sufficient to cover the amount owed on the loan. In the event the borrower defaults, the Fund's access to the collateral may be limited or delayed by bankruptcy or other insolvency laws. Loans trade in an over-the-counter market, and confirmation and settlement, which are effected through standardized procedures and documentation, may take significantly longer than seven days to complete. Extended trade settlement periods may, in unusual market conditions with a high volume of shareholder redemptions, present a risk to shareholders regarding the Fund's ability to pay redemption proceeds within the allowable time periods stated in its prospectus. The secondary market for floating rate loans also may be subject to irregular trading activity and wide bid/ask spreads. The lack of an active trading market for certain loans may impair the ability of the Fund to sell its loan interests at a time when it may otherwise be desirable to do so or may require the Fund to sell them at prices that are less than what the Fund regards as their fair market value and may make it difficult to value such loans. Accordingly, loan interests may at times be illiquid. Interests in loans made to finance highly leveraged companies or transactions, such as corporate acquisitions, may be especially vulnerable to adverse changes in economic or market conditions. The Fund may acquire a loan interest by obtaining an assignment of all or a portion of the interests in a particular loan that are held by an original lender or a prior assignee. As an assignee, the Fund normally will succeed to all rights and obligations of its assignor with respect to the portion of the loan that is being assigned. However, the rights and obligations acquired by the purchaser of a loan assignment may differ from, and be more limited than, those held by the original lenders or the assignor. Alternatively, the Fund may acquire a participation in a loan interest that is held by another party. When the Fund's loan interest is a participation, the Fund is subject to the risk that the party selling the participation interest will not remit the Fund's pro rata share of loan payments to the Fund, and the Fund may have less control over the exercise of remedies than the party selling the participation interest.

Market Risk
In recent periods, fixed income instruments have experienced unusual liquidity issues, increased price volatility and, in some cases, credit downgrades and increased likelihood of default. These events have reduced the willingness and ability of some lenders to extend credit, and have made it more difficult for some borrowers to obtain financing on attractive terms, if at all. In addition, global economies and financial markets are becoming increasingly interconnected, which increases the possibilities that conditions in one country or region might adversely impact issuers in a different country or region. A rise in protectionist trade policies, risks associated with the United Kingdom's vote to leave the European Union, the risk of a trade dispute between the United States and China, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations. In addition, political and governmental events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree. High public debt in the U.S. and other countries creates ongoing systemic and market risks and policymaking uncertainty. Because the impact on the markets has been widespread, it may be difficult to identify both risks and opportunities using past models of the interplay of market forces, or to predict the duration of these market conditions. Interest rates have been unusually low in recent years in the U.S. and abroad. Because there is little precedent for this situation, it is difficult to predict the impact on various markets of a significant rate increase, whether brought about by U.S. policy makers or by dislocations in world markets. In addition, there is a risk that the prices of goods and services in the U.S. and many foreign economies may decline over time, known as deflation (the opposite of inflation). Deflation may have an adverse effect on stock prices and creditworthiness and may make defaults on debt more likely.

Market Timing Risk
The Fund is subject to the risk of market timing activities by investors due to the Fund's investments in foreign securities, or its exposure to foreign securities through the derivatives it holds. If the Fund trades foreign securities, it generally prices these foreign securities using their closing prices from the foreign markets in which they trade, which typically is prior to the Fund's calculation of its net asset value ("NAV"). These prices may be affected by events that occur after the close of a foreign market but before the Fund prices its shares. In such instances, the Fund may fair value high yield and foreign securities. However, some investors may engage in frequent short-term trading in the Fund to take advantage of any price differentials that may be reflected in the NAV of the Fund's shares. Frequent trading by Fund shareholders poses risks to other shareholders in the Fund, including (i) the dilution of the Fund's NAV, (ii) an increase in the Fund's expenses, and (iii) interference with the portfolio manager's ability to execute efficient investment strategies. While the Manager monitors trading in the Fund, there is no guarantee that it can detect all market timing activities.

Municipal Securities Risk
Municipal securities could be affected by adverse political and legislative changes. Changes in the financial condition of a municipality may affect the ability of a municipal issuer to make interest and principal payments on a security as they become due. Changes in interest rates and market conditions may directly impact the liquidity and valuation of municipal securities, which may affect the yield and value of the Fund's municipal securities investments. A downgrade in the issuer's or security's credit rating can reduce the market value of the security.

Other Investment Companies Risk
To the extent that the Fund invests in shares of other registered investment companies, the Fund will indirectly bear the fees and expenses charged by those investment companies in addition to the Fund's direct fees and expenses. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:

ETFs. To the extent the Fund invests in exchange-traded funds ("ETFs") that invest in equity securities, fixed income securities and/or foreign securities, or track an index, the Fund is subject to the risks associated with the underlying investments held by the ETF or the index fluctuations to which the ETF is subject. Because ETFs are listed on an exchange, they may be subject to trading halts, may trade at a premium or discount to their net asset value ("NAV") and may not be liquid. An ETF that tracks an index may not precisely replicate the returns of its benchmark index.

Prepayment and Extension Risk
Prepayment risk is the risk that the principal amount of a bond may be repaid prior to the bond's maturity date. Due to a decline in interest rates or excess cash flow, a debt security may be called or otherwise prepaid before maturity. If this occurs, no additional interest will be paid on the investment. The Fund may have to invest at a lower rate, may not benefit from an increase in value that may result from declining interest rates, and may lose any premium it paid to acquire the security. Variable and floating rate securities may be less sensitive to prepayment risk. Extension risk is the risk that a decrease in prepayments may, as a result of higher interest rates or other factors, result in the extension of a security's effective maturity, heighten interest rate risk and increase the potential for a decline in its price.

Redemption Risk
The Fund may experience periods of high levels of redemptions that could cause the Fund to sell assets at inopportune times or at a loss or depressed value. The sale of assets to meet redemption requests may create net capital gains, which could cause the Fund to have to distribute substantial capital gains. Redemption risk is heightened during periods of declining or illiquid markets. Additionally, during periods of heavy redemptions, the Fund may borrow funds through the interfund credit facility, or from a bank line of credit, which may increase costs. A rise in interest rates or other market developments may cause investors to move out of fixed income securities on a large scale. Heavy redemptions could hurt the Fund's performance.

Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors. Individual sectors may be more volatile, and may perform differently, than the broader market. As the Fund's portfolio changes over time, the Fund's exposure to a particular sector may become higher or lower.

Consumer Staples Sector Risk. The consumer staples sector generally consists of companies whose primary lines of business are food, beverage and other household items. This sector can be affected by, among other things, changes in price and availability of underlying commodities, rising energy prices and global economic conditions. Unlike the consumer discretionary sector, companies in the consumer staples sector have historically been characterized as non-cyclical in nature and therefore less volatile in times of change. Companies in the consumer staples sector are subject to government regulation affecting the permissibility of using various food additives and production methods, which regulations could affect company profitability. Tobacco companies may be adversely affected by the adoption of proposed legislation and/or by litigation.

Securities Selection Risk
Securities selected by a sub-advisor for the Fund may not perform to expectations. It may not be possible to predict or to hedge against a widening in the yield spread of the securities selected by a sub-advisor. This could result in the Fund's underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.

Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the obligation. Segregated assets generally cannot be sold while the position they are covering is outstanding, unless they are replaced with other assets of equal value. The need to segregate cash or other liquid securities could limit the Fund's ability to pursue other opportunities as they arise.

Unrated Securities Risk
Because the Fund may purchase securities that are not rated by any rating organization, a sub-advisor, after assessing their credit quality, may internally assign ratings to certain of those securities in categories similar to those of rating organizations. Unrated securities are subject to the risk that a sub-advisor may not accurately evaluate the security's comparative credit rating. Some unrated securities may not have an active trading market or may be difficult to value, which means the Fund might have difficulty selling them promptly at an acceptable price. Unrated securities may be subject to greater liquidity risk and price volatility.

U.S. Government Securities and Government-Sponsored Enterprises Risk
A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. The market prices for such securities are not guaranteed and will fluctuate. Securities held by the Fund that are issued by government-sponsored enterprises, such as the Federal National Mortgage Association (''Fannie Mae''), Federal Home Loan Mortgage Corporation (''Freddie Mac''), Federal Home Loan Bank (''FHLB''), Federal Farm Credit Bank ("FFCB"), and the Tennessee Valley Authority, are not guaranteed by the U.S. Treasury and are not backed by the full faith and credit of the U.S. Government, and no assurance can be given that the U.S. Government will provide financial support if these organizations do not have the funds to meet future payment obligations. U.S. Government securities and securities of government-sponsored entities are also subject to credit risk, interest rate risk and market risk.

Valuation Risk
The Fund may value certain assets at a price different from the price at which they can be sold. This risk may be especially pronounced for investments that are illiquid or may become illiquid, or securities that trade in relatively thin markets and/or markets that experience extreme volatility. The Fund's ability to value its investments in an accurate and timely manner may be impacted by technological issues and/or errors by third party service providers, such as pricing services or accounting agents.

Variable and Floating Rate Securities Risk
The coupons on variable and floating-rate securities are not fixed and may fluctuate based upon changes in market rates. The coupon on a floating rate security is generally based on an interest rate, such as a money-market index, the London Interbank Offered Rate ("LIBOR") or a Treasury bill rate. Variable and floating rate securities are subject to interest rate risk and credit risk. As short-term interest rates decline, the coupons on floating-rate securities typically decrease. Alternatively, during periods of rising interest rates, the coupons on floating-rate securities typically increase. Changes in the coupons of floating-rate securities may lag behind changes in market rates or may have limits on the maximum increases in the coupon rates. The value of floating-rate securities may decline if their coupons do not rise as much, or as quickly, as interest rates in general. Floating rate securities will not generally increase in value if interest rates decline. Certain types of floating rate instruments may be subject to greater liquidity risk than other debt securities.

The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's performance compares to a broad-based market index, which is the Fund's benchmark index, for the periods indicated.

You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Average annual total returns for periods ended December 31, 2018.

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 income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account ("IRA") or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for the Fund's Investor Class shares; after-tax returns for other share classes will vary.

Investment Objective

Fees and Expenses of the Fund

Shareholder Fees (fees paid directly from your investment)

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

Example

Expense Example - (American Beacon The London Company Income Equity Fund℠) - USD ($)	1 Year	3 Years	5 Years	10 Years
Class A	676	890	1,121	1,784
Class C	285	572	985	2,137
Class Y	82	255	444	990
Institutional Class	75	233	406	906
Investor Class	108	337	585	1,294

Expense Example, No Redemption - (American Beacon The London Company Income Equity Fund℠)	1 Year	3 Years	5 Years	10 Years
Class C \| USD ($)	185	572	985	2,137

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 23% of the average value of its portfolio.

Under normal market conditions, at least 80% of the Fund's net assets (plus the amount of any borrowings for investment purposes) are invested in equity and equity-related investments. The Fund's investments in equity and equity-related investments include U.S. common stocks, preferred stocks, securities convertible into or exchangeable for common stock, American Depositary Receipts ("ADRs"), U.S. dollar-denominated foreign stocks traded on U.S. exchanges, real estate investment trusts ("REITs"), and income trusts. The Fund may also invest up to 20% of its net assets in fixed income instruments, primarily including trust preferred securities. The Fund may invest in issuers of any market capitalization and will typically hold 30 to 40 issuers.

The Fund's investment sub-advisor, The London Company of Virginia, LLC ("The London Company"), emphasizes investments in profitable, financially stable, core companies that focus on generating high dividend income, are run by shareholder-oriented management, and trade at reasonable valuations. The London Company also seeks companies with high return on capital, consistent free cash flow generation, predictability and stability. The London Company employs an investment process with bottom up, fundamental analysis and follows a strict sell discipline.

On a short-term basis, the Fund may invest cash balances in other investment companies, including money market funds, and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs. The Fund may seek to earn additional income by lending its securities to certain qualified broker-dealers and institutions on a short-term or long-term basis.

There is no assurance that the Fund will achieve its investment objectives and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of current income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund listed below are presented in alphabetical order, and not in order of importance or potential exposure, to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.

Credit Risk
The Fund is subject to the risk that the issuer or guarantor of a debt security, or the counterparty to a derivatives contract or a loan, may fail, or become less able, to make timely payment of interest or principal or otherwise honor its obligations or default completely. Changes in the actual or perceived creditworthiness of an issuer, or a downgrade or default affecting any of the Fund's securities, could affect the Fund's performance.

Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems: human errors, systems and technology disruptions or failures, or cybersecurity incidents. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers, as well as the securities trading venues and their service providers, to suffer data corruption or lose operational functionality. It is not possible for the Fund or its service providers to identify all of the operational risks that may affect the Fund or to develop processes and controls to completely eliminate or mitigate their occurrence or effects. Most issuers in which the Fund invests are heavily dependent on computers for data storage and operations, and require ready access to the internet to conduct their business. Thus, cybersecurity incidents could also affect issuers of securities in which the Fund invests, leading to significant loss of value.

Dividend Risk
An issuer of stock held by the Fund may choose not to declare a dividend or the dividend rate might not remain at current levels. Dividend paying stocks might not experience the same level of earnings growth or capital appreciation as non-dividend paying stocks.

Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:

Common Stock Risk. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.

Convertible Securities Risk. Convertible securities are subject to the risk that the credit standing of the issuer may have an effect on the convertible securities' investment value. Convertible securities are also sensitive to movements in interest rates. Generally, a convertible security is subject to the market risks of stocks when the underlying stock's price is high relative to the conversion price, and is subject to the market risks of debt securities when the underlying stock's price is low relative to the conversion price.

Depositary Receipts Risk. Depositary receipts are subject to certain of the risks associated with investing directly in foreign securities, including, but not limited to, currency exchange rate fluctuations, political and financial instability in the home country of a particular depositary receipt, less liquidity and more volatility, less government regulation and supervision and delays in transaction settlement.

Income Trusts Risk. Income trusts are subject to credit risk, interest rate risk and dividend risk. Income trusts, which hold income producing assets and pass the income on to security holders, share many of the risks inherent in stock ownership. Income trusts may also lack diversification and potential growth may be sacrificed because revenue is passed on to security holders, rather than reinvested in the business.

Preferred Stock Risk. Preferred stocks are sensitive to movements in interest rates. Preferred stocks may be less liquid than common stocks and, unlike common stocks, participation in the growth of an issuer may be limited. Distributions on preferred stocks generally are payable at the discretion of an issuer and after required payments to bond holders. In certain situations, an issuer may call or redeem its preferred stock or convert it to common stock. The market prices of preferred stocks are generally more sensitive to actual or perceived changes in the issuer's financial condition or prospects than are the prices of debt securities.

Real Estate Investment Trusts ("REITs") Risk. Investments in REITs are subject to the risks associated with investing in the real estate industry, including, among other risks: adverse developments affecting the real estate industry; declines in real property values; changes in interest rates; defaults by mortgagors or other borrowers and tenants; lack of availability of mortgage funds or financing; extended vacancies of properties, especially during economic downturns; casualty or condemnation losses; and governmental actions, such as changes to tax laws, zoning regulations or environmental regulations. REITs also are dependent upon the skills of their managers and are subject to heavy cash flow dependency or self-liquidation. Domestic REITs could be adversely affected by failure to qualify for tax-free "pass-through" of distributed net income and net realized gains under the Internal Revenue Code of 1986, as amended ("Internal Revenue Code"), or to maintain their exemption from registration under the Investment Company Act of 1940, as amended ("Investment Company Act"). REITs typically incur fees that are separate from those incurred by the Fund. Accordingly, the Fund's investment in REITs will result in the layering of expenses such that shareholders will indirectly bear a proportionate share of the REITs' operating expenses, in addition to paying Fund expenses. The value of REIT common stock may decline when interest rates rise.

Focused Holdings Risk
Because the Fund may have a focused portfolio, the increase or decrease of the value of a single investment may have a greater impact on the Fund's net asset value ("NAV") and total return when compared to other funds.

Foreign Investing Risk
Non-U.S. investments carry potential risks not associated with U.S. investments. Such risks include, but are not limited to: (1) currency exchange rate fluctuations, (2) political and financial instability, (3) less liquidity, (4) lack of uniform accounting, auditing and financial reporting standards, (5) increased volatility, (6) different government regulation and supervision of foreign stock exchanges, brokers and listed companies, and (7) delays in transaction settlement in some foreign markets.

Futures Contracts Risk
Futures contracts are derivative instruments pursuant to a contract where the parties agree to a fixed price for an agreed amount of securities or other underlying assets at an agreed date. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities underlying those derivatives. There may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There can be no assurance that any strategy used will succeed. There also can be no assurance that, at all times, a liquid market will exist for offsetting a futures contract that the Fund has previously bought or sold and this may result in the inability to close a futures contract when desired. Futures contracts may experience potentially dramatic price changes, which will increase the volatility of the Fund and may involve a small investment of cash (the amount of initial and variation margin) relative to the magnitude of the risk assumed (the potential increase or decrease in the price of the futures contract).

Interest Rate Risk
The Fund is subject to the risk that the market value of fixed income securities it holds will decline due to rising interest rates. Generally, the value of investments with interest rate risk, such as fixed income securities, will move in the opposite direction to movements in interest rates. The Federal Reserve has raised the federal funds rate several times since December 2015 and may increase or decrease rates in the future. Interest rates may rise, perhaps significantly and/or rapidly, potentially resulting in substantial losses to the Fund. The prices of fixed income securities are also affected by their durations. Fixed income securities with longer durations generally have greater sensitivity to changes in interest rates. For example, if a bond has a duration of eight years, a 1% increase in interest rates could be expected to result in an 8% decrease in the value of the bond. An increase in interest rates can impact markets broadly as well. Some investors buy securities with borrowed money; an increase in interest rates can cause a decline in those markets. To the extent the Fund holds an investment with a negative interest rate to maturity, the Fund would generate a negative return on that investment.

Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.

Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Large Capitalization Companies Risk
The securities of large market capitalization companies may underperform other segments of the market because such companies may be less responsive to competitive challenges and opportunities. Many larger capitalization companies also may be unable to attain the high growth rates of successful smaller companies, especially during periods of economic expansion.

Market Risk
In recent periods, fixed income instruments have experienced unusual liquidity issues, increased price volatility and, in some cases, credit downgrades and increased likelihood of default. These events have reduced the willingness and ability of some lenders to extend credit, and have made it more difficult for some borrowers to obtain financing on attractive terms, if at all. In addition, global economies and financial markets are becoming increasingly interconnected, which increases the possibilities that conditions in one country or region might adversely impact issuers in a different country or region. A rise in protectionist trade policies, risks associated with the United Kingdom's vote to leave the European Union, the risk of a trade dispute between the United States and China, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations. In addition, political and governmental events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree. High public debt in the U.S. and other countries creates ongoing systemic and market risks and policymaking uncertainty. Because the impact on the markets has been widespread, it may be difficult to identify both risks and opportunities using past models of the interplay of market forces, or to predict the duration of these market conditions. Interest rates have been unusually low in recent years in the U.S. and abroad. Because there is little precedent for this situation, it is difficult to predict the impact on various markets of a significant rate increase, whether brought about by U.S. policy makers or by dislocations in world markets. In addition, there is a risk that the prices of goods and services in the U.S. and many foreign economies may decline over time, known as deflation (the opposite of inflation). Deflation may have an adverse effect on stock prices and creditworthiness and may make defaults on debt more likely.

Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.

Other Investment Companies Risk
To the extent that the Fund invests in shares of other registered investment companies, the Fund will indirectly bear the fees and expenses charged by those investment companies in addition to the Fund's direct fees and expenses. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:

Money Market Funds. Investments in money market funds are subject to interest rate risk, credit risk, and market risk.

Sector Risk
When the Fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the Fund were invested more evenly across sectors. Individual sectors may be more volatile, and may perform differently, than the broader market. As the Fund's portfolio changes over time, the Fund's exposure to a particular sector may become higher or lower.

Information Technology Sector Risk. The market prices of information technology-related securities tend to exhibit a greater degree of market risk and sharp price fluctuations than other types of securities. These securities may fall in and out of favor with investors rapidly, which may cause sudden selling and dramatically lower market prices.

Securities Lending Risk
The borrower of the Fund's securities must provide collateral in the form of cash or cash equivalents, securities of the U.S. Government and its agencies and instrumentalities, approved bank letters of credit, or other forms of collateral that are permitted by the SEC for registered investment companies in an amount at least equal to the value of the loaned securities. For loans collateralized with cash, the Fund invests the cash in other securities.

To the extent the Fund lends its securities, it may be subject to the following risks: i) borrowers of the Fund's securities may provide collateral in the form of cash that is reinvested in securities, ii) the securities in which the cash collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers, iii) delays may occur in the recovery of securities from borrowers, which could interfere with the Fund's ability to vote proxies or to settle transactions, and iv) there is the risk of possible loss of rights in the collateral should the borrower fail financially.

Securities Selection Risk
Securities selected by the sub-advisor for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.

Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the obligation. Segregated assets generally cannot be sold while the position they are covering is outstanding, unless they are replaced with other assets of equal value. The need to segregate cash or other liquid securities could limit the Fund's ability to pursue other opportunities as they arise.

Small Capitalization Companies Risk
Investing in the securities of small-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since small-capitalization companies may have narrower commercial markets, and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.

Trust Preferred Securities Risk
Trust preferred securities are subject to market risk, interest rate risk and credit risk. Holders of the trust preferred securities have limited voting rights to control the activities of the trust and no voting rights with respect to the parent company. Trust preferred securities prices fluctuate for several reasons, including changes in the financial condition of an issuer, investors' perception of the financial condition of an issuer, or the general economic condition of the market for trust preferred securities.

Value Stocks Risk
Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may decline. The Fund's investments in value stocks seek to limit potential downside price risk over time; however, value stock prices still may decline substantially. In addition, the Fund may produce more modest gains as a trade-off for this potentially lower risk. The Fund's investment in value stocks could cause the Fund to underperform funds that use a growth or non-value approach to investing or have a broader investment style.

The bar chart and table below provide an indication of risk by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's average annual total returns compare to a broad-based market index, which is the Fund's benchmark index, for the periods indicated.

You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Average annual total returns for periods ended December 31, 2018.

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 income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account ("IRA") or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for the Fund's Investor Class shares; after-tax returns for other share classes will vary.

Investment Objective

Fees and Expenses of the Fund

Shareholder Fees (fees paid directly from your investment)

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

Example

Expense Example - (American Beacon Zebra Small Cap Equity Fund℠) - USD ($)	1 Year	3 Years	5 Years	10 Years
Class A	699	1,008	1,340	2,274
Class C	307	691	1,202	2,606
Class Y	101	369	657	1,478
Institutional Class	91	354	639	1,448
Investor Class	129	451	797	1,771

Expense Example, No Redemption - (American Beacon Zebra Small Cap Equity Fund℠)	1 Year	3 Years	5 Years	10 Years
Class C \| USD ($)	207	691	1,202	2,606

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 93% of the average value of its portfolio.

Under normal market conditions, the Fund invests at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities of small market capitalization U.S. companies. These companies have market capitalizations similar to the market capitalizations of the companies in the Russell 2000® Index at the time of investment.

The Russell 2000® Index is comprised of the 2000 smallest companies in the Russell 3000® Index based on total market capitalization. As of October 31, 2019, the market capitalizations of the companies in the Russell 2000® Index ranged from $14 million to $7 billion. In addition to common stocks, preferred stocks, American Depositary Receipts ("ADRs"), and securities convertible into or exchangeable for common stocks, the Fund may also invest in real estate investment trusts ("REITs") and master limited partnerships ("MLPs").

The Fund's sub-advisor, Zebra Capital Management, LLC ("Zebra"), seeks to capture a liquidity premium among fundamentally strong, publicly-traded equities. A liquidity premium is the additional return that may be realized on the sales of securities that are less liquid at the time of purchase. A liquidity premium may exist in public equity markets, as more liquid stocks tend to be priced at a premium, while less liquid stocks tend to be priced at a discount, thus having higher expected appreciation. Despite producing similar levels of earnings and cash flows, less liquid stocks can typically be purchased at lower prices, offering higher expected appreciation. Frequently, a fundamentally-sound stock is less traded because it has temporarily fallen out of favor. Over time, the market may recognize the inherent value of the stock again, where the Fund would stand to benefit from the liquidity premium as the stock's trading activity and price rise. Zebra chooses the securities that comprise the Fund's portfolio first by identifying stocks with strong fundamentals (i.e., earnings, book value, cash flows) that Zebra believes are undervalued in the market relative to their long-term appreciation potential. Zebra then applies the liquidity premium analysis to identify the stocks that trade less frequently than stocks with comparable fundamentals.

Stocks are typically sold when fundamentals deteriorate, trading activity increases relative to changes in a stock's fundamentals, or Zebra believes there are greater opportunities to capture liquidity premium in other stocks. On a short-term basis, the Fund may invest cash balances in other investment companies, including money market funds and may purchase and sell futures contracts to gain market exposure on cash balances or reduce market exposure in anticipation of liquidity needs. The Fund may lend its securities to broker-dealers and other institutions to earn additional income.

There is no assurance that the Fund will achieve its investment objective and you could lose part or all of your investment in the Fund. The Fund is not designed for investors who need an assured level of income and is intended to be a long-term investment. The Fund is not a complete investment program and may not be appropriate for all investors. Investors should carefully consider their own investment goals and risk tolerance before investing in the Fund. The principal risks of investing in the Fund listed below are presented in alphabetical order, and not in order of importance or potential exposure, to facilitate your ability to find particular risks and compare them with the risks of other funds. Each risk summarized below is considered a "principal risk" of investing in the Fund, regardless of the order in which it appears.

Cybersecurity and Operational Risk
The Fund and its service providers, and shareholders' ability to transact with the Fund, may be negatively impacted due to operational risks arising from, among other problems: human errors, systems and technology disruptions or failures, or cybersecurity incidents. Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data, or proprietary information, or cause the Fund or its service providers, as well as the securities trading venues and their service providers, to suffer data corruption or lose operational functionality. It is not possible for the Fund or its service providers to identify all of the operational risks that may affect the Fund or to develop processes and controls to completely eliminate or mitigate their occurrence or effects. Most issuers in which the Fund invests are heavily dependent on computers for data storage and operations, and require ready access to the internet to conduct their business. Thus, cybersecurity incidents could also affect issuers of securities in which the Fund invests, leading to significant loss of value.

Dividend Risk
An issuer of stock held by the Fund may choose not to declare a dividend or the dividend rate might not remain at current levels. Dividend paying stocks might not experience the same level of earnings growth or capital appreciation as non-dividend paying stocks.

Equity Investments Risk
Equity securities are subject to investment risk and market risk. The Fund may invest in the following equity securities, which may expose the Fund to the following additional risks:

Common Stock Risk. The value of a company's common stock may fall as a result of factors affecting the company, companies in the same industry or sector, or the financial markets overall. Common stock generally is subordinate to preferred stock upon the liquidation or bankruptcy of the issuing company.

Convertible Securities Risk. Convertible securities are subject to the risk that the credit standing of the issuer may have an effect on the convertible securities' investment value. Convertible securities are also sensitive to movements in interest rates. Generally, a convertible security is subject to the market risks of stocks when the underlying stock's price is high relative to the conversion price, and is subject to the market risks of debt securities when the underlying stock's price is low relative to the conversion price.

Depositary Receipts Risk. Depositary receipts are subject to certain of the risks associated with investing directly in foreign securities, including, but not limited to, currency exchange rate fluctuations, political and financial instability in the home country of a particular depositary receipt, less liquidity and more volatility, less government regulation and supervision and delays in transaction settlement.

Master Limited Partnerships ("MLPs") Risk. Investing in MLPs involves certain risks related to investing in the underlying assets of the MLPs and risks associated with pooled investment vehicles. Holders of units in MLPs have more limited rights to vote on matters affecting the partnership and may be required to sell their common units at an undesirable time or price. The Fund's investments in MLPs may also make it more difficult for the Fund to meet the requirements necessary to qualify as a "regulated investment company" under the Internal Revenue Code of 1986, as amended ("Internal Revenue Code").

Preferred Stock Risk. Preferred stocks are sensitive to movements in interest rates. Preferred stocks may be less liquid than common stocks and, unlike common stocks, participation in the growth of an issuer may be limited. Distributions on preferred stocks generally are payable at the discretion of an issuer and after required payments to bond holders. In certain situations, an issuer may call or redeem its preferred stock or convert it to common stock. The market prices of preferred stocks are generally more sensitive to actual or perceived changes in the issuer's financial condition or prospects than are the prices of debt securities.

Real Estate Investment Trusts ("REITs") Risk. Investments in REITs are subject to the risks associated with investing in the real estate industry, including, among other risks: adverse developments affecting the real estate industry; declines in real property values; changes in interest rates; defaults by mortgagors or other borrowers and tenants; lack of availability of mortgage funds or financing; extended vacancies of properties, especially during economic downturns; casualty or condemnation losses; and governmental actions, such as changes to tax laws, zoning regulations or environmental regulations. REITs also are dependent upon the skills of their managers and are subject to heavy cash flow dependency or self-liquidation. Domestic REITs could be adversely affected by failure to qualify for tax-free "pass-through" of distributed net income and net realized gains under the Internal Revenue Code of 1986, as amended ("Internal Revenue Code"), or to maintain their exemption from registration under the Investment Company Act of 1940, as amended ("Investment Company Act"). REITs typically incur fees that are separate from those incurred by the Fund. Accordingly, the Fund's investment in REITs will result in the layering of expenses such that shareholders will indirectly bear a proportionate share of the REITs' operating expenses, in addition to paying Fund expenses. The value of REIT common stock may decline when interest rates rise.

Futures Contracts Risk
Futures contracts are derivative instruments pursuant to a contract where the parties agree to a fixed price for an agreed amount of securities or other underlying assets at an agreed date. The use of such derivative instruments may expose the Fund to additional risks that it would not be subject to if it invested directly in the securities underlying those derivatives. There may at times be an imperfect correlation between the movement in the prices of futures contracts and the value of their underlying instruments or indexes. There can be no assurance that any strategy used will succeed. There also can be no assurance that, at all times, a liquid market will exist for offsetting a futures contract that the Fund has previously bought or sold and this may result in the inability to close a futures contract when desired. Futures contracts may experience potentially dramatic price changes, which will increase the volatility of the Fund and may involve a small investment of cash (the amount of initial and variation margin) relative to the magnitude of the risk assumed (the potential increase or decrease in the price of the futures contract).

Investment Risk
An investment in the Fund is not a deposit with a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. When you sell your shares of the Fund, they could be worth less than what you paid for them. Therefore, you may lose money by investing in the Fund.

Issuer Risk
The value of, and/or the return generated by, a security may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets.

Liquidity Risk
The Fund is susceptible to the risk that certain investments held by the Fund may have limited marketability or be subject to restrictions on sale, and may be difficult or impossible to purchase or sell at favorable times or prices. An inability to sell a portfolio position can adversely affect the Fund's value or prevent the Fund from being able to take advantage of other investment opportunities. The Fund could lose money if it is unable to dispose of an investment at a time that is most beneficial to the Fund. The Fund may be required to dispose of investments at unfavorable times or prices to satisfy obligations, which may result in losses or may be costly to the Fund. For example, the Fund may be forced to sell certain investments at unfavorable prices to meet redemption requests or other cash needs. Judgment plays a greater role in pricing illiquid investments than in investments with more active markets.

Market Risk
The Fund is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably based on overall economic conditions and other factors. The value of a security may decline due to general market conditions which are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investment sentiment generally. Changes in the financial condition of a single issuer can impact a market as a whole. A rise in protectionist trade policies, risks associated with the United Kingdom's vote to leave the European Union, the risk of a trade dispute between the United States and China, and the possibility of changes to some international trade agreements, could affect the economies of many nations, including the United States, in ways that cannot necessarily be foreseen at the present time. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations. In addition, political and governmental events within the U.S. and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree.

Mid-Capitalization Companies Risk
Investing in the securities of mid-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since mid-capitalization companies may have narrower commercial markets and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity, and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.

Model and Data Risk
The success of the sub-advisor's investment strategy depends largely on the effectiveness of its quantitative research models and investment programs. Models and data are used to screen potential investments for the Fund. When models or data prove to be incorrect or incomplete, any decisions made in reliance thereon expose the Fund to potential risks. Some of the models used by the sub-advisor are predictive in nature. The use of predictive models has inherent risks. Because predictive models are usually constructed based on historical data supplied by third parties, the success of relying on such models may depend heavily on the accuracy and reliability of the supplied historical data. There is no assurance that the models are complete or accurate, or representative of future market cycles, nor will they always be beneficial to the Fund if they are accurate. Additionally, programs may become outdated or experience malfunctions which may not be identified by the sub-advisor and therefore may also result in losses to the Fund. These models may negatively affect Fund performance for various other reasons, including human judgment, inaccuracy of historical data and non-quantitative factors (such as market or trading system dysfunctions, investor fear or overreaction).

Other Investment Companies Risk
To the extent that the Fund invests in shares of other registered investment companies, the Fund will indirectly bear the fees and expenses charged by those investment companies in addition to the Fund's direct fees and expenses. The Fund will be subject to the risks associated with investments in those companies, including but not limited to the following:

Money Market Funds. Investments in money market funds are subject to interest rate risk, credit risk, and market risk.

Securities Lending Risk
The borrower of the Fund's securities must provide collateral in the form of cash or cash equivalents, securities of the U.S. Government and its agencies and instrumentalities, approved bank letters of credit, or other forms of collateral that are permitted by the SEC for registered investment companies in an amount at least equal to the value of the loaned securities. For loans collateralized with cash, the Fund invests the cash in other securities.

To the extent the Fund lends its securities, it may be subject to the following risks: i) borrowers of the Fund's securities may provide collateral in the form of cash that is reinvested in securities, ii) the securities in which the cash collateral is invested may not perform sufficiently to cover the return collateral payments owed to borrowers, iii) delays may occur in the recovery of securities from borrowers, which could interfere with the Fund's ability to vote proxies or to settle transactions, and iv) there is the risk of possible loss of rights in the collateral should the borrower fail financially.

Securities Selection Risk
Securities selected by the sub-advisor for the Fund may not perform to expectations. This could result in the Fund's underperformance compared to its benchmark index(es), or other funds with similar investment objectives or strategies.

Segregated Assets Risk
In connection with certain transactions that may give rise to future payment obligations, the Fund may be required to maintain a segregated amount of, or otherwise earmark, cash or liquid securities to cover the obligation. Segregated assets generally cannot be sold while the position they are covering is outstanding, unless they are replaced with other assets of equal value. The need to segregate cash or other liquid securities could limit the Fund's ability to pursue other opportunities as they arise.

Small Capitalization Companies Risk
Investing in the securities of small-capitalization companies involves greater risk and the possibility of greater price volatility than investing in larger capitalization and more established companies. Since small-capitalization companies may have narrower commercial markets, and more limited operating history, product lines, and managerial and financial resources than larger, more established companies, the securities of these companies may lack sufficient market liquidity and they can be particularly sensitive to expected changes in interest rates, borrowing costs and earnings.

Value Stocks Risk
Value stocks are subject to the risk that their intrinsic value may never be realized by the market or that their prices may decline. The Fund's investments in value stocks seek to limit potential downside price risk over time; however, value stock prices still may decline substantially. In addition, the Fund may produce more modest gains as a trade-off for this potentially lower risk. The Fund's investment in value stocks could cause the Fund to underperform funds that use a growth or non-value approach to investing or have a broader investment style.

The bar chart and table below provide an indication of risk of investing by showing changes in the Fund's performance over time. The bar chart shows how the Fund's performance has varied from year to year. The table shows how the Fund's average annual total returns compare to a broad-based market index, which is the Fund's benchmark index, for the periods indicated.

You may obtain updated performance information on the Fund's website at www.americanbeaconfunds.com. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Average annual total returns for periods ended December 31, 2018.

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 income taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. The return after taxes on distributions and sale of Fund shares may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period. If you are a tax-exempt entity or hold your Fund shares through a tax-deferred arrangement, such as an individual retirement account ("IRA") or a 401(k) plan, the after-tax returns do not apply to your situation. After-tax returns are shown only for the Fund's Investor Class shares; after-tax returns for other share classes will vary.