This excerpt taken from the PNC 10-K filed Mar 2, 2009.
Securities Gains and Losses
The fair value of securities pledged to secure public and trust deposits and repurchase agreements and for other purposes was $22.5 billion at December 31, 2008 and $24.2 billion at December 31, 2007. The pledged securities include positions held in our portfolio of investment securities, trading securities, and securities accepted as collateral from others that we are permitted by contract or custom to sell or repledge.
The following table presents, by remaining contractual maturity, the amortized cost, fair value and weighted-average yield of debt securities at December 31, 2008.