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Variable Rate Notes Federal Home Loan Mortgage Corp. Variable Rate Notes 2.312 3134GSDS1 S6XOOCT0IEG5ABCC6L87 US3134GSDS16 U.S. Government Agency Debt Y Fitch Agency Moody's Agency Standard & Poor's AA+ 2019-07-08 2019-08-08 2019-08-08 N N N 0.0233 964984.88 964984.88 0.0080 N N N N U.S. Treasury Notes U.S. Treasury Notes 2.141 9128285H9 254900HROIFWPRGM1V77 US9128285H96 U.S. Treasury Debt Y Fitch Govt Moody's Govt Standard & Poor's AA+ 2019-07-01 2020-10-31 2020-10-31 N N N 0.0226 1298086.40 1298086.40 0.0107 N Y Y N Federal National Mortgage Association Federal National Mortgage Association 0.875 3135G0N33 B1V7KEBTPIMZEU4LTD58 US3135G0N339 U.S. Government Agency Debt Y Fitch Agency Moody's Agency Standard & Poor's AA+ 2019-08-02 2019-08-02 2019-08-02 N N N 0.0215 729114.94 729114.94 0.0060 N N N N U.S. Treasury Notes U.S. Treasury Notes 2.211 9128285Y2 254900HROIFWPRGM1V77 US9128285Y20 U.S. Treasury Debt Y Fitch Govt Moody's Govt Standard & Poor's AA+ 2019-07-01 2021-01-31 2021-01-31 N N N 0.0228 999085.28 999085.28 0.0082 N Y Y N U.S. Treasury Notes U.S. Treasury Notes 2.235 9128286Q8 254900HROIFWPRGM1V77 US9128286Q86 U.S. Treasury Debt Y Fitch Govt Moody's Govt Standard & Poor's AA+ 2019-07-01 2021-04-30 2021-04-30 N N N 0.0229 99886.80 99886.80 0.0008 N Y Y N U.S. Treasury Notes U.S. Treasury Notes 0.875 912828TH3 254900HROIFWPRGM1V77 US912828TH30 U.S. Treasury Debt Y Fitch Govt Moody's Govt Standard & Poor's AA+ 2019-07-31 2019-07-31 2019-07-31 N N N 0.0212 54937.53 54937.53 0.0005 N Y Y N BlackRock SeriesFund 2019-07-05 /s/Neal J. Andrews Neal J. Andrews Chief Financial Officer