STI 2018 Annual Report

Notes to Consolidated Financial Statements, continued 104 Investment securities pledged to secure public deposits, repurchase agreements, trusts, certain derivative agreements, and other funds had a fair value of $3.3 billion and $4.3 billion at December 31, 2018 and 2017, respectively. The following table presents the amortized cost, fair value, and weighted average yield of the Company's investment securities at December 31, 2018, by remaining contractual maturity, with the exception of MBS, which are based on estimated average life. Receipt of cash flows may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalties. Distribution of Remaining Maturities (Dollars in millions) Due in 1 Year or Less Due After 1 Year through 5 Years Due After 5 Years through 10 Years Due After 10 Years Total Amortized Cost: Securities AFS: U.S. Treasury securities $315 $2,646 $1,316 $— $4,277 Federal agency securities 112 29 8 72 221 U.S. states and political subdivisions 2 81 15 508 606 MBS - agency residential 1,558 3,684 15,962 1,957 23,161 MBS - agency commercial 1 495 1,885 307 2,688 MBS - non-agency commercial — 12 931 — 943 Corporate and other debt securities — 14 — — 14 Total securities AFS $1,988 $6,961 $20,117 $2,844 $31,910 Fair Value: Securities AFS: U.S. Treasury securities $312 $2,603 $1,296 $— $4,211 Federal agency securities 113 29 8 71 221 U.S. states and political subdivisions 2 84 16 487 589 MBS - agency residential 1,607 3,655 15,682 1,920 22,864 MBS - agency commercial 1 483 1,845 298 2,627 MBS - non-agency commercial — 12 904 — 916 Corporate and other debt securities — 14 — — 14 Total securities AFS $2,035 $6,880 $19,751 $2,776 $31,442 Weighted average yield 1 3.05% 2.25% 2.98% 3.11% 2.84% 1 Weighted average yields are based on amortized cost and presented on an FTE basis.