Cash and Cash Equivalents

12 Months Ended

Dec. 31, 2017

The following table details our cash and cash equivalents at December 31, 2017 and December 31, 2016:



(Dollars in thousands)	December 31, 2017		December 31, 2016
Cash and due from banks (1)	$	2,672,290	$	2,476,588
Securities purchased under agreements to resell (2)	247,876		64,028
Other short-term investment securities	2,909		5,134
Total cash and cash equivalents	$	2,923,075	$	2,545,750


(1)	At December 31, 2017 and 2016, $0.6 billion and $1.1 billion, respectively, of our cash and due from banks was deposited at the FRB and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $1.1 billion and $0.7 billion, respectively.


(2)	At December 31, 2017 and 2016, securities purchased under agreements to resell were collateralized by U.S. Treasury securities and U.S. agency securities with aggregate fair values of $253 million and $66 million, respectively. None of these securities were sold or repledged as of December 31, 2017 and 2016.

Additional information regarding our securities purchased under agreements to resell for 2017 and 2016 are as follows:



	Year Ended December 31,
(Dollars in thousands)	2017		2016
Average securities purchased under agreements to resell	$	94,094	$	90,362
Maximum amount outstanding at any month-end during the year	377,073		316,059