Certain securities, loans and other real estate owned were pledged to secure public and trust deposits, assets sold under agreements to repurchase, other borrowings and credit facilities available, derivative positions, and loan servicing agreements. The classification and carrying amount of the Corporation's pledged assets, in which the secured parties are not permitted to sell or repledge the collateral, were as follows:

	March 31,		December 31,		March 31,
(In thousands)	2012		2011			2011
Investment securities available-for-sale, at fair value	$	1,840,351	$	1,894,651	$	1,529,464
Investment securities held-to-maturity, at amortized cost		25,000		25,000		49,734
Loans held-for-sale measured at lower of cost or fair value		4,421		5,286		2,638
Loans held-in-portfolio covered under loss sharing agreements with the FDIC		536,666		-		4,634,499
Loans held-in-portfolio not covered under loss sharing agreements with the FDIC		8,967,998		8,571,268		8,906,093
Other real estate covered under loss sharing agreements with the FDIC		-		-		65,562
Total pledged assets	$	11,374,436	$	10,496,205	$	15,187,990

Pledged securities and loans that the creditor has the right by custom or contract to repledge are presented separately on the consolidated statements of financial condition.

At March 31, 2012, the Corporation had $ 1.3 billion in investment securities available-for-sale and $ 0.3 billion in loans that served as collateral to secure public funds (December 31, 2011 - $ 1.4 billion and $ 0.4 billion, respectively; March 31, 2011 - $ 1.0 billion and $ 0.7 billion, respectively).

At March 31, 2012, the Corporation's banking subsidiaries had short-term and long-term credit facilities authorized with the Federal Home Loan Bank system (the “FHLB”) aggregating $2.5 billion (December 31, 2011 - $2.0 billion; March 31, 2011 - $1.7 billion). Refer to Note 14 to the consolidated financial statements for borrowings outstanding under these credit facilities. At March 31, 2012, the credit facilities authorized with the FHLB were collateralized by $ 3.7 billion in loans held-in-portfolio (December 31, 2011 - $ 3.2 billion; March 31, 2011 - $ 2.7 billion). Also, the Corporation's banking subsidiaries had a borrowing capacity at the Federal Reserve (“Fed”) discount window of $3.2 billion (December 31, 2011 - $2.6 billion; March 31, 2011 - $2.8 billion), which remained unused as of such date. The amount available under these credit facilities with the Fed is dependent upon the balance of loans and securities pledged as collateral. At March 31, 2012, the credit facilities with the Fed discount window were collateralized by $ 4.9 billion in loans held-in-portfolio (December 31, 2011 - $ 4.0 billion; March 31, 2011 - $ 5.5 billion). These pledged assets are included in the above table and were not reclassified and separately reported in the consolidated statements of financial condition.

In addition, at March 31, 2012 and December 31, 2011, securities sold but not yet delivered amounting to $68 million were pledged to secure repurchase agreements.

Loans held-in-portfolio and other real estate owned that are covered by loss sharing agreements with the FDIC amounting to $ 4.7 billion served as collateral to secure the note issued to the FDIC at March 31, 2011.