N-MFP LIVE N 2011-07-31 0000773674 S000005965 1 N N 002-99222 AMERICAN CENTURY INVESTMENT MANAGEMENT, INC. 801-08174 PRICEWATERHOUSECOOPERS, LLP KANSAS CITY MO AMERICAN CENTURY SERVICES, LLC American Century Services, LLC 0000794265 084-01406 N N N Treasury 44 44 2601118223.83 352648079.92 41326417.31 2912439886.44 0.0006 1.0000 2011-07-31 1.0000 2011-07-31 C000016429 2500.00 2912439886.44 1.00 32700539.95 209421620.72 176721080.77 0.0001 1.0000 2011-07-31 1.0000 2011-07-31 U.S. Treasury U.S. Treasury 0.005 912795Z79 Treasury Debt First Tier Security 2011-08-02 2011-08-02 N N N 140000000.00 139999980.56 0.0481 N 139999860.00 139999860.00 U.S. Treasury U.S. Treasury 0.007 9127953B5 Treasury Debt First Tier Security 2011-08-04 2011-08-04 N N N 425000000.00 424999754.16 0.1459 N 424991075.00 424991075.00 U.S. Treasury U.S. Treasury 0.099 9127953D1 Treasury Debt First Tier Security 2011-08-11 2011-08-11 N N N 200000000.00 199994500.00 0.0687 N 199985800.00 199985800.00 U.S. Treasury U.S. Treasury 0.147 912820GL5 Treasury Debt First Tier Security 2011-08-15 2011-08-15 N N N 31971000.00 31969197.16 0.0110 N 31969273.57 31969273.57 U.S. Treasury U.S. Treasury 0.005 9127953E9 Treasury Debt First Tier Security 2011-08-18 2011-08-18 N N N 416816000.00 416815015.85 0.1431 N 416780987.46 416780987.46 U.S. Treasury U.S. Treasury 0.015 9127952A8 Treasury Debt First Tier Security 2011-08-25 2011-08-25 N N N 145000000.00 144998550.00 0.0498 N 144984775.00 144984775.00 U.S. Treasury U.S. Treasury 4.625 912828FS4 Treasury Debt First Tier Security 2011-08-31 2011-08-31 N N N 163000000.00 163602213.88 0.0562 N 163598536.00 163598536.00 U.S. Treasury U.S. Treasury 0.028 9127953F6 Treasury Debt First Tier Security 2011-09-01 2011-09-01 N N N 308000000.00 307992572.07 0.1058 N 307978132.00 307978132.00 U.S. Treasury U.S. Treasury 0.020 9127953L3 Treasury Debt First Tier Security 2011-09-29 2011-09-29 N N N 20000000.00 19999352.64 0.0069 N 19997800.00 19997800.00 U.S. Treasury U.S. Treasury 0.101 912820NR4 Treasury Debt First Tier Security 2011-09-30 2011-09-30 N N N 25000000.00 24995834.26 0.0086 N 24993450.00 24993450.00 U.S. Treasury U.S. Treasury 1 912828LW8 Treasury Debt First Tier Security 2011-09-30 2011-09-30 N N N 93000000.00 93135746.19 0.0320 N 93134478.00 93134478.00 U.S. Treasury U.S. Treasury 4.5 912828FU9 Treasury Debt First Tier Security 2011-09-30 2011-09-30 N N N 50000000.00 50350793.04 0.0173 N 50361350.00 50361350.00 U.S. Treasury U.S. Treasury 0.017 9127953M1 Treasury Debt First Tier Security 2011-10-06 2011-10-06 N N N 40000000.00 39998753.33 0.0137 N 39995240.00 39995240.00 U.S. Treasury U.S. Treasury 1 912828LT5 Treasury Debt First Tier Security 2011-10-31 2011-10-31 N N N 115000000.00 115273849.20 0.0396 N 115251620.00 115251620.00 U.S. Treasury U.S. Treasury 4.625 912828FW5 Treasury Debt First Tier Security 2011-10-31 2011-10-31 N N N 25000000.00 25271579.15 0.0087 N 25279300.00 25279300.00 U.S. Treasury U.S. Treasury 1.75 912828JU5 Treasury Debt First Tier Security 2011-11-15 2011-11-15 N N N 15000000.00 15064955.36 0.0052 N 15069735.00 15069735.00 U.S. Treasury U.S. Treasury 0.75 912828MM9 Treasury Debt First Tier Security 2011-11-30 2011-11-30 N N N 4000000.00 4008707.04 0.0014 N 4008284.00 4008284.00 U.S. Treasury U.S. Treasury 4.5 912828GA2 Treasury Debt First Tier Security 2011-11-30 2011-11-30 N N N 60000000.00 60836596.27 0.0209 N 60867180.00 60867180.00 U.S. Treasury U.S. Treasury 1.125 912828KA7 Treasury Debt First Tier Security 2011-12-15 2011-12-15 N N N 105000000.00 105316659.76 0.0362 N 105377370.00 105377370.00 U.S. Treasury U.S. Treasury 1 912828ML1 Treasury Debt First Tier Security 2011-12-31 2011-12-31 N N N 15000000.00 15055682.87 0.0052 N 15051570.00 15051570.00 U.S. Treasury U.S. Treasury 1.125 912828KB5 Treasury Debt First Tier Security 2012-01-15 2012-01-15 N N N 50000000.00 50184883.23 0.0172 N 50214850.00 50214850.00 U.S. Treasury U.S. Treasury 0.875 912828MJ6 Treasury Debt First Tier Security 2012-01-31 2012-01-31 N N N 60000000.00 60210444.69 0.0207 N 60206280.00 60206280.00 U.S. Treasury U.S. Treasury 1.375 912828KC3 Treasury Debt First Tier Security 2012-02-15 2012-02-15 N N N 10000000.00 10054349.66 0.0035 N 10062890.00 10062890.00 U.S. Treasury U.S. Treasury 1 912828MU1 Treasury Debt First Tier Security 2012-03-31 2012-03-31 N N N 50000000.00 50285886.75 0.0173 N 50257800.00 50257800.00 U.S. Treasury U.S. Treasury 1 912828NB2 Treasury Debt First Tier Security 2012-04-30 2012-04-30 N N N 10000000.00 10060835.26 0.0035 N 10056670.00 10056670.00 U.S. Treasury U.S. Treasury 4.5 912828GQ7 Treasury Debt First Tier Security 2012-04-30 2012-04-30 N N N 20000000.00 20641531.45 0.0071 N 20635160.00 20635160.00