State the term- Pass Through Certificates (PTCs)

Pass through Certificates (PTCs) are debt securities which pass through income from debtors through intermediaries to investors. Primarily banks who have a strong retail loan portfolio are the intermediaries who issue these certificates. The most common form if pass through is mortgage backed security, in which principal and interest payment from home loan (or car loan) takers are passed from banks or savings agencies that pool and repackage them in the form of securities, to investors. The bank which collects payments from debtor's charges a fee from its services, which is deducted from income passed on to investors. These securities are credit rated and interest payment is according to rating. Rating (i.e. P1+) is followed by (So) to denote the transaction is that of securitization.