N-MFP2 0000899148 XXXXXXXX 2017-04-30 0000899148 S000003657 1 N N 033-59692 Security Investors, LLC 801-08008 Ernst & Young LLP McLean VA None Rydex Fund Services, LLC 0000913181 084-05475 N N N Exempt Government N 40 89 222966100.17 186300488.83 206948445.74 140183651.51 252137495.20 212235802.58 265754268.09 246716084.09 0.4261 0.3886 0.3846 0.2589 0.4818 0.4427 0.4939 0.4557 1313.79 540746705.70 540746705.70 639783.71 455617.19 540932186.01 540881405.83 1.0000 0.0085 1.0002 1.0002 1.0002 1.0002 C000113321 1.00 540932186.01 540881405.83 1.0002 1.0002 1.0002 1.0002 102015337.07 212873821.32 95808194.96 139711590.97 197386113.29 138868105.83 109475997.73 106127602.31 504685643.05 597581120.43 0.0001 Y Security Investors LLC, voluntary waiver, 61410.62; Mizuho Securities LLC Mizuho Securities LLC 0.73% REPOXMIZU U.S. Treasury Repurchase Agreement, if collateralized only by U.S. Treasuries (including Strips) and cash Y N U.S. TREASURY NOTES 2017-12-15 2018-05-31 1.000000 - 2.380000 30541200.00 31104183.90 U.S. Treasuries (including strips) N Standard & Poor's NR 2017-05-01 2017-05-01 2017-05-01 N N N 0.0073 30494293.69 30494293.69 0.0564 N Y Y N Federal Home Loan Banks Federal Home Loan Banks 0.99% 3130A7YH2 US3130A7YH29 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-05 2017-09-05 2017-09-05 N N N 0.0099 100017.47 100017.47 0.0002 N N N N Federal Home Loan Banks Federal Home Loan Banks 0.95% 3130A8F32 US3130A8F321 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-05 2017-12-05 2017-12-05 N N N 0.0095 355256.63 355256.63 0.0007 N N N N Federal Home Loan Banks Federal Home Loan Banks 0.82% 3130ABAB2 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-20 2017-10-20 2017-10-20 N N N 0.0082 14999759.53 14999759.53 0.0277 N N N N Federal Agricultural Mortgage Corp Discount Notes Federal Agricultural Mortgage Corp Discount Notes 0.88% 31315LMM7 US31315LMM71 U.S. Government Agency Debt N Standard & Poor's NR 2017-10-03 2017-10-03 2017-10-03 N N N 0.0088 3985188.89 3985188.89 0.0074 N N N N Federal Agricultural Mortgage Corp Federal Agricultural Mortgage Corp 0.76% 3132X0GK1 US3132X0GK13 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-11 2017-05-11 2017-05-11 N N N 0.0076 12000572.23 12000572.23 0.0222 N N N N Federal Farm Credit Discount Notes Federal Farm Credit Discount Notes 0.62% 313313HR2 US313313HR27 U.S. Government Agency Debt N Standard & Poor's NR 2017-07-03 2017-07-03 2017-07-03 N N N 0.0062 14983987.50 14983987.50 0.0277 N N N N Federal Farm Credit Banks Federal Farm Credit Banks 0.82% 31331KG95 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-06-15 2017-06-15 2017-06-15 N N N 0.0082 1001085.92 1001085.92 0.0019 N N N N Federal Home Loan Banks Federal Home Loan Banks 0.61% 313379DD8 US313379DD85 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-06-21 2017-06-21 2017-06-21 N N N 0.0061 5973292.53 5973292.53 0.0110 N N N N Federal Home Loan Banks Federal Home Loan Banks 0.61% 313379FW4 US313379FW49 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-06-09 2017-06-09 2017-06-09 N N N 0.0061 35419950.71 35419950.71 0.0655 N N N N Federal Home Loan Bank Discount Notes Federal Home Loan Bank Discount Notes 0.77% 313385FU5 U.S. Government Agency Debt N Standard & Poor's NR 2017-05-19 2017-05-19 2017-05-19 N N N 0.0077 3198785.60 3198785.60 0.0059 N N Y N Federal Home Loan Bank Discount Notes Federal Home Loan Bank Discount Notes 0.78% 313385FQ4 U.S. Government Agency Debt N Standard & Poor's NR 2017-05-15 2017-05-15 2017-05-15 N N N 0.0078 799762.00 799762.00 0.0015 N N Y N Federal Home Loan Bank Discount Notes Federal Home Loan Bank Discount Notes 0.76% 313385GB6 U.S. Government Agency Debt N Standard & Poor's NR 2017-05-26 2017-05-26 2017-05-26 N N N 0.0076 39979055.55 39979055.55 0.0739 N N Y N Federal Home Loan Bank Discount Notes Federal Home Loan Bank Discount Notes 0.81% 313385GP5 US313385GP56 U.S. Government Agency Debt N Standard & Poor's NR 2017-06-07 2017-06-07 2017-06-07 N N N 0.0081 22781405.45 22781405.45 0.0421 N N Y N Federal Home Loan Bank Discount Notes Federal Home Loan Bank Discount Notes 0.78% 313385GW0 U.S. Government Agency Debt N Standard & Poor's NR 2017-06-14 2017-06-14 2017-06-14 N N N 0.0080 26974541.12 26974541.12 0.0499 N N Y N Federal Home Loan Bank Discount Notes Federal Home Loan Bank Discount Notes 0.76% 313385FD3 U.S. Government Agency Debt N Standard & Poor's NR 2017-05-04 2017-05-04 2017-05-04 N N N 0.0076 3499781.25 3499781.25 0.0065 N N Y N Federal Home Loan Bank Discount Notes Federal Home Loan Bank Discount Notes 0.77% 313385FC5 U.S. Government Agency Debt N Standard & Poor's NR 2017-05-03 2017-05-03 2017-05-03 N N N 0.0077 5599763.55 5599763.55 0.0104 N N Y N Federal Home Loan Bank Discount Notes Federal Home Loan Bank Discount Notes 0.78% 313385FL5 U.S. Government Agency Debt N Standard & Poor's NR 2017-05-11 2017-05-11 2017-05-11 N N N 0.0078 2699422.50 2699422.50 0.0050 N N Y N Federal Home Loan Bank Discount Notes Federal Home Loan Bank Discount Notes 0.77% 313385FE1 US313385FE19 U.S. Government Agency Debt N Standard & Poor's NR 2017-05-05 2017-05-05 2017-05-05 N N N 0.0077 999915.56 999915.56 0.0018 N N Y N Federal Farm Credit Banks Federal Farm Credit Banks 1% 3133EDWL2 US3133EDWL28 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-01 2017-07-03 2017-07-03 N N N 0.0100 10000348.70 10000348.70 0.0185 N N N N Federal Farm Credit Banks Federal Farm Credit Banks 0.96% 3133EEQ94 US3133EEQ944 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-27 2017-11-27 2017-11-27 N N N 0.0096 145050.57 145050.57 0.0003 N N N N Federal Farm Credit Banks Federal Farm Credit Banks 0.86% 3133EEJ68 US3133EEJ683 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-01 2018-05-11 2018-05-11 N N N 0.0086 5009836.63 5009836.63 0.0093 N N N N Federal Farm Credit Banks Federal Farm Credit Banks 1.11% 3133EEJ76 US3133EEJ766 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-02 2017-11-13 2017-11-13 N N N 0.0111 9002691.44 9002691.44 0.0166 N N N N Federal Farm Credit Banks Federal Farm Credit Banks 1.05% 3133EFFV4 US3133EFFV41 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-01 2017-05-30 2017-05-30 N N N 0.0105 10860966.60 10860966.60 0.0201 N N N N Federal Farm Credit Banks Federal Farm Credit Banks 1.05% 3133EFDH7 US3133EFDH74 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-01 2017-09-18 2017-09-18 N N N 0.0095 10651635.83 10651635.83 0.0197 N N N N Federal Farm Credit Banks Federal Farm Credit Banks 1.03% 3133EFSD0 US3133EFSD06 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-01 2017-09-14 2017-09-14 N N N 0.0103 30025817.22 30025817.22 0.0555 N N N N Federal Farm Credit Banks Federal Farm Credit Banks 1.05% 3133EFQF7 US3133EFQF71 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-01 2017-05-23 2017-05-23 N N N 0.0105 10000377.29 10000377.29 0.0185 N N N N Federal Farm Credit Banks Federal Farm Credit Banks 1.08% 3133EF3X3 US3133EF3X35 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-01 2017-08-21 2017-08-21 N N N 0.0108 60005578.63 60005578.63 0.1109 N N N N Federal Farm Credit Banks Federal Farm Credit Banks 1.01% 3133EFNP8 US3133EFNP80 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-02 2017-06-12 2017-06-12 N N N 0.0101 7000647.29 7000647.29 0.0129 N N N N Federal Farm Credit Banks Federal Farm Credit Banks 0.86% 3133EGH73 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-01 2018-05-14 2018-05-14 N N N 0.0086 3007828.10 3007828.10 0.0056 N N N N Federal Farm Credit Banks Federal Farm Credit Banks 0.93% 3133EGGQ2 US3133EGGQ20 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-01 2017-12-20 2017-12-20 N N N 0.0093 25022441.85 25022441.85 0.0463 N N N N Federal Home Loan Mortgage Corp Federal Home Loan Mortgage Corp 0.6% 3134G6R70 US3134G6R700 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-05-26 2017-05-26 2017-05-26 N N N 0.0060 2500250.67 2500250.67 0.0046 N N N N Federal Home Loan Mortgage Corp Federal Home Loan Mortgage Corp 0.78% 3134G8L49 US3134G8L493 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-08-25 2017-08-25 2017-08-25 N N N 0.0078 2400150.54 2400150.54 0.0044 N N N N Federal National Mortgage Association Federal National Mortgage Association 0.61% 31359MEL3 US31359MEL37 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-06-01 2017-06-01 2017-06-01 N N N 0.0061 4747553.66 4747553.66 0.0088 N N N N Federal Home Loan Mortgage Corp Federal Home Loan Mortgage Corp 0.62% 3137EADH9 US3137EADH91 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-06-29 2017-06-29 2017-06-29 N N N 0.0062 10006219.36 10006219.36 0.0185 N N N N Federal National Mortgage Association Federal National Mortgage Association 0.71% 31398ADM1 US31398ADM18 U.S. Government Agency Debt N Standard & Poor's AA+ 2017-06-12 2017-06-12 2017-06-12 N N N 0.0060 4823574.54 4823574.54 0.0089 N N N N United States Treasury Bill United States Treasury Bill 0.82% 912796LL1 U.S. Treasury Debt N Standard & Poor's NR 2017-07-27 2017-07-27 2017-07-27 N N N 0.0082 49902125.00 49902125.00 0.0923 N Y Y N United States Treasury Bill United States Treasury Bill 0.91% 912796LU1 US912796LU13 U.S. Treasury Debt N Standard & Poor's NR 2017-09-21 2017-09-21 2017-09-21 N N N 0.0091 59787774.10 59787774.10 0.1105 N Y Y N U.S. Government Money Market Fund 2017-05-05 James Howley James Howley Assistant Treasurer