4. Federal Funds Sold, Securities Purchased under Agreements to Resell and Other Short-Term Investment Securities

The following table details the securities purchased under agreements to resell and other short-term investment securities at September 30, 2011 and December 31, 2010:


(Dollars in thousands)	September 30, 2011		December 31, 2010
Securities purchased under agreements to resell	$	191,655	$	60,345
Short-term agency discount notes		—		330,370
Other short-term investment securities		108,173		12,992

Total federal funds sold, securities purchased under agreements to resell and other short-term investment securities	$	299,828	$	403,707

In addition, as of September 30, 2011 and December 31, 2010, $992.5 million and $2.2 billion, respectively, of our cash and due from banks was deposited with the Federal Reserve Bank and was earning interest at the Federal Funds target rate, and interest-earning deposits in other financial institutions were $461.3 million and $246.3 million, respectively.