Trustmark utilizes securities sold under repurchase agreements as a source of borrowing in connection with overnight repurchase agreements offered to commercial deposit customers by using its unencumbered investment securities as collateral. Trustmark accounts for its securities sold under repurchase agreements as secured borrowings in accordance with FASB ASC Topic 860-30, “Transfers and Servicing – Secured Borrowing and Collateral.” Securities sold under repurchase agreements are stated at the amount of cash received in connection with the transaction. Trustmark monitors collateral levels on a continual basis and may be required to provide additional collateral based on the fair value of the underlying securities. Securities sold under repurchase agreements were secured by securities with a carrying amount of $145.2 million and $163.3 million at March 31, 2019 and December 31, 2018, respectively. Trustmark’s repurchase agreements are transacted under master repurchase agreements that give Trustmark, in the event of default by the counterparty, the right of offset with the same counterparty. As of March 31, 2019, all repurchase agreements were short-term and consisted primarily of sweep repurchase arrangements, under which excess deposits are “swept” into overnight repurchase agreements with Trustmark. The following table presents the securities sold under repurchase agreements by collateral pledged at March 31, 2019 and December 31, 2018 ($ in thousands):

	March 31, 2019		December 31, 2018
Mortgage-backed securities
Other residential mortgage-backed securities
Issued or guaranteed by FNMA, FHLMC or GNMA	$	872	$	6,721
Commercial mortgage-backed securities
Issued or guaranteed by FNMA, FHLMC or GNMA		37,564		38,788
Total securities sold under repurchase agreements	$	38,436	$	45,509