N-MFP LIVE N 2011-03-31 0001096012 S000001844 1 N N 333-88343 American Beacon Advisors, Inc. 801-29198 Ernst & Young, LLP Dallas TX American Beacon Advisors, Inc. State Street Bank and Trust 0000839287 085-05003 Y 0001001641 AmBeacon Money Mkt Portfolio S000002170 N N Prime 25 25 640739458.73 259.35 201360.91 640538357.17 0.0031 1.0000 2011-03-31 1.0000 2011-03-31 C000004818 1000000.00 640538357.17 1.00 3467421.93 7299615.04 3832193.11 0.0016 1.0000 2011-03-31 1.0000 2011-03-31 American Beacon Master Money Market Portfolio American Beacon Master Money Market Portfolio, 0.30% ABA_Master 0001001641 Investment Company First Tier Security 2011-03-01 2011-03-01 N N N 640739458.73 640739458.73 1.0000 N 640739458.73 640739458.73