American Beacon SSI Alternative Income Fund American Beacon SSI Alternative Income Fund American Beacon ARK Transformational Innovation Fund American Beacon ARK Transformational Innovation Fund American Beacon TwentyFour Strategic Income Fund American Beacon TwentyFour Strategic Income Fund American Beacon TwentyFour Short Term Bond Fund American Beacon TwentyFour Short Term Bond Fund Dabfyepro_2822 American Beacon SSI Alternative Income Fund Dabfyesai_2826 AB_FYE_06_30_SAI Dabarktransformationalinnovationfundfyepro_2817 AB ARK Transformational Innovation Fund Dabarktransformationalinnovationfundfyesai_2827 AB ARK Transformational Innovation Fund_FYE_06_30_SAI Dabtwentyfourfundsfyepro_2819 AB TwentyFour Funds Dabtwentyfourfundsfyesai_2825 AB TwentyFour Funds_FYE_06_30_SAI Y Class - C000207659 Y Class R5 Class - C000207658 R5 Class Investor Class - C000207660 Investor Class A Class - C000210490 A Class C Class - C000210491 C Class Y Class - C000176826 Y Class R6 Class - C000224371 R6 Class R5 Class - C000176824 R5 Class Investor Class - C000176825 Investor Class A Class - C000205755 A Class C Class - C000205756 C Class Y Class - C000180741 Y Class R5 Class - C000180737 R5 Class Investor Class - C000180738 Investor Class Ultra Class - C000180740 Ultra Class A Class - C000217746 A Class C Class - C000217747 C Class Y Class - C000217745 Y Class R6 Class - C000217748 R6 Class Allocation Risk Allocation Risk Callable Securities Risk Callable Securities Risk Convertible Securities Risk Convertible Securities Risk Counterparty Risk Counterparty Risk Credit Risk Credit Risk Currency Risk Currency Risk Cybersecurity and Operational Risk Cybersecurity and Operational Risk Debentures Risk Debentures Risk Derivatives Risk Derivatives Risk Dividend Risk Dividend Risk Emerging Markets Risk Emerging Markets Risk Equity Investments Risk Equity Investments Risk Foreign Investing Risk Foreign Investing Risk Hedging Risk Hedging Risk High Portfolio Turnover Risk High Portfolio Turnover Risk High-Yield Securities Risk High-Yield Securities Risk Interest Rate Risk Interest Rate Risk Investment Risk Investment Risk Issuer Risk Issuer Risk Large-Capitalization Companies Risk Large-Capitalization Companies Risk Liquidity Risk Liquidity Risk Market Risk Market Risk Market Direction Risk Market Direction Risk Market Timing Risk Market Timing Risk Mid-Capitalization Companies Risk Mid-Capitalization Companies Risk Other Investment Companies Risk Other Investment Companies Risk Preferred Stock Risk Preferred Stock Risk Redemption Risk Redemption Risk Reliance on Corporate Management and Financial Reporting Risk Reliance on Corporate Management and Financial Reporting Risk Restricted Securities Risk Restricted Securities Risk Secured, Partially Secured and Unsecured Obligation Risk Secured, Partially Secured and Unsecured Obligation Risk Securities Selection Risk Securities Selection Risk Short Position Risk Short Position Risk Small-Capitalization Companies Risk Small-Capitalization Companies Risk Trust Preferred Securities Risk Trust Preferred Securities Risk Unrated Securities Risk Unrated Securities Risk Variable and Floating Rate Securities Risk Variable and Floating Rate Securities Risk Zero Coupon Securities Risk Zero Coupon Securities Risk Bloomberg US Aggregate Bond Index (Reflects no deduction for fees, expenses or taxes) Bloomberg US Aggregate Bond Index (Reflects no deduction for fees, expenses or taxes) ICE BofA US 3-Month Treasury Bill Index (Reflects no deduction for fees, expenses or taxes) ICE BofA US 3-Month Treasury Bill Index (Reflects no deduction for fees, expenses or taxes) Environmental, Social, and/or Governance Investing Risk Environmental, Social, and/or Governance Investing Risk Growth Companies Risk Growth Companies Risk Sector Risk Sector Risk Securities Lending Risk Securities Lending Risk Transformational Innovation Risk Transformational Innovation Risk Valuation Risk Valuation Risk Volatility Risk Volatility Risk S&P 500® Index TR (Reflects no deduction for fees, expenses or taxes) S&P 500® Index TR (Reflects no deduction for fees, expenses or taxes) Asset Selection Risk Asset Selection Risk Asset-Backed Securities Risk Asset-Backed Securities Risk Collateralized Loan Obligations CLOs Risk Collateralized Loan Obligations CLOs Risk Contingent Convertible Securities CoCos Risk Contingent Convertible Securities CoCos Risk Covenant-Lite Obligations Risk Covenant-Lite Obligations Risk Geographic Concentration Risk Geographic Concentration Risk Inflation Index-Linked Securities Risk Inflation Index-Linked Securities Risk Leverage Risk Leverage Risk Loan Interests Risk Loan Interests Risk Mortgage-Backed and Mortgage-Related Securities Risk Mortgage-Backed and Mortgage-Related Securities Risk Prepayment and Extension Risk Prepayment and Extension Risk Segregated Assets Risk Segregated Assets Risk Sovereign and Quasi-Sovereign Debt Risk Sovereign and Quasi-Sovereign Debt Risk Supranational Risk Supranational Risk U.S. Government Securities and Government-Sponsored Enterprises Risk U.S. Government Securities and Government-Sponsored Enterprises Risk U.S. Treasury Obligations Risk U.S. Treasury Obligations Risk Bloomberg Global-Aggregate Total Return Index Value Hedged USD (Reflects no deduction for fees, expenses, or taxes) Bloomberg Global-Aggregate Total Return Index Value Hedged USD (Reflects no deduction for fees, expenses, or taxes) ICE BofA US Dollar 3-Month Deposit Offered Rate Constant Maturity Index (Reflects no deduction for fees, expenses or taxes) ICE BofA US Dollar 3-Month Deposit Offered Rate Constant Maturity Index (Reflects no deduction for fees, expenses or taxes) Small Fund Risk Small Fund Risk ICE BofA 1-3 Year US Corporate Index Reflects no deduction for fees, expenses, or taxes ICE BofA 1-3 Year US Corporate Index Reflects no deduction for fees, expenses, or taxes