American Beacon SiM High Yield Opportunities Fund | American Beacon SiM High Yield Opportunities Fund

American Beacon SiM High Yield Opportunities Fund

American Beacon Zebra Global Equity Fund
American Beacon Zebra Small Cap Equity Fund
American Beacon SiM High Yield Opportunities Fund
American Beacon The London Company Income Equity Fund

 Supplement dated June 30, 2014
to the
Prospectus dated December 27, 2013

Effective July 1, 2014, American Beacon Advisors, Inc. (“Manager”) will reduce the administrative service fee charged to the Fund's A Class and C Class shares from 0.40% to 0.30% of each Class's average daily net assets. At that time, the contractual fee limit for the A Class and C Class shares also will be reduced by 0.10%. The information below supplements the Fund's Prospectus dated December 27, 2013, and is in addition to any other supplement(s):

In the “Fees and Expenses of the Fund” section, the fee table and expense example are replaced with the following:

Fees and Expenses of the Fund

In the “Fees and Expenses of the Fund” section, the fee table and expense example are replaced with the following:

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees American Beacon SiM High Yield Opportunities Fund	A Class		C Class
Maximum sales charge imposed on purchases (as a percentage of offering price)	4.75%		none
Maximum deferred sales charge (as a percentage of the lower of original offering price or redemption proceeds)	0.50%	[1]	1.00%
Redemption fee (as a percentage of amount redeemed; applies to the proceeds of shares redeemed within 90 days of purchase)	2.00%		2.00%

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

Annual Fund Operating Expenses American Beacon SiM High Yield Opportunities Fund		A Class	C Class
Management fees	[1]	0.48%	0.48%
Distribution and/or service (12b-1) fees	[1]	0.25%	1.00%
Other Expenses	[1]	0.58%	0.57%
Total Annual Fund Operating Expenses	[1]	1.31%	2.05%
Fee waiver and/or expense reimbursement or recoupment of prior waiver/reimbursement	[1]	(0.07%)	(0.06%)
Total Annual Fund Operating Expenses after fee waiver and/or expense reimbursement or recoupment	[1][2]	1.24%	1.99%

Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example American Beacon SiM High Yield Opportunities Fund (USD $)	1 year	3 years	5 years	10 years
A Class	595	864	1,153	1,973
C Class	302	637	1,098	2,375

Assuming no redemption of shares:

Expense Example, No Redemption (USD $)	1 year	3 years	5 years	10 years
American Beacon SiM High Yield Opportunities Fund C Class	202	637	1,098	2,375

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

[1] A contingent deferred sales charge ('CDSC') of 0.50% will be charged on certain purchases of $1,000,000 or more of A Class shares that are redeemed in whole or part within 18 months of purchase.

[1] The fee table has been restated with respect to the Fund's A Class and C Class Shares to reflect a reduction in the administrative services fee effective July 1, 2014.

[2] The Manager has contractually agreed to reduce and/or reimburse the A Class, C Class, Y Class and Institutional Class of the Fund for Other Expenses, as applicable, through December 31, 2014 to the extent that Total Annual Fund Operating Expenses exceed 1.24% for the A Class, 1.99% for the C Class, 0.94% for the Y Class and 0.84% for the Institutional Class (excluding taxes, brokerage commissions, acquired fund fees and expenses and other extraordinary expenses such as litigation). The contractual expense reimbursement can be changed only with the approval of a majority of the Fund's Board of Trustees. The Manager can be reimbursed by the Fund for any contractual reductions or expense reimbursements if reimbursement to the Manager (a) occurs within three years after the Manager's own reduction or reimbursement and (b) does not cause the Total Annual Fund Operating Expenses of a class to exceed the contractual percentage limit.