Definition of Pass-through securities

Pass-through securities

A pool of fixed-income securities backed by a package of assets (i.e. mortgages)
where the holder receives the principal and interest payments. Related: mortgage pass-through security

Agency pass-throughs

Mortgage pass-through securities whose principal and interest payments are
guaranteed by government agencies, such as the Government National Mortgage Association ("Ginnie Mae"), Federal Home Loan Mortgage Corporation ("Freddie Mac") and Federal National Mortgage Association ("Fannie Mae").

Book-entry securities

The Treasury and federal agencies are moving to a book-entry system in which securities are not represented by engraved pieces of paper but are maintained in computerized records at the
Fed in the names of member banks, which in turn keep records of the securities they own as well as those they
are holding for customers. In the case of other securities where a book-entry has developed, engraved
securities do exist somewhere in quite a few cases. These securities do not move from holder to holder but are
usually kept in a central clearinghouse or by another agent.

Conventional pass-throughs

Also called private-label pass-throughs, any mortgage pass-through security not
guaranteed by government agencies. Compare agency pass-throughs.

Debt securities

IOUs created through loan-type transactions - commercial paper, bank CDs, bills, bonds, and
other instruments.

Discount securities

Non-interest-bearing money market instruments that are issued at a discount and
redeemed at maturity for full face value, e.g. U.S. Treasury bills.

Exempt securities

Instruments exempt from the registration requirements of the securities Act of 1933 or the
margin requirements of the SEC Act of 1934. Such securities include government bonds, agencies, munis,
commercial paper, and private placements.

Federal agency securities

securities issued by corporations and agencies created by the U.S. government,
such as the Federal Home Loan Bank Board and Ginnie Mae.

First-pass regression

A time series regression to estimate the betas of securities portfolios.

Flow-through basis

An account for the investment credit to show all income statement benefits of the credit
in the year of acquisition, rather than spreading them over the life of the asset acquired.

Flow-through method

The practice of reporting to shareholders using straight-line depreciation and
accelerated depreciation for tax purposes and "flowing through" the lower income taxes actually paid to the
financial statement prepared for shareholders.

Fully modified pass-throughs

Agency pass-throughs that guarantee the timely payment of both interest and
principal. Related: modified pass-throughs
Functional currency As defined by FASB No. 52, an affiliate's functional currency is the currency of the
primary economic environment in which the affiliate generates and expends cash.

Government securities

Negotiable U.S. Treasury securities.

Manufactured housing securities (MHSs)

Loans on manufactured homes - that is, factory-built or
prefabricated housing, including mobile homes.

Modified pass-throughs

Agency pass-throughs that guarantee (1) timely interest payments and (2) principal
payments as collected, but no later than a specified time after they are due. Related: fully modified passthroughs

Mortgage pass-through security

Also called a passthrough, a security created when one or more mortgage
holders form a collection (pool) of mortgages sells shares or participation certificates in the pool. The cash
flow from the collateral pool is "passed through" to the security holder as monthly payments of principal,
interest, and prepayments. This is the predominant type of MBS traded in the secondary market.

Mortgage-Backed Securities Clearing Corporation

A wholly owned subsidiary of the Midwest Stock
Exchange that operates a clearing service for the comparison, netting, and margining of agency-guaranteed
MBSs transacted for forward delivery.

Mortgage-backed securities

securities backed by a pool of mortgage loans.

Passive portfolio strategy

A strategy that involves minimal expectational input, and instead relies on
diversification to match the performance of some market index. A passive strategy assumes that the
marketplace will reflect all available information in the price paid for securities, and therefore, does not
attempt to find mispriced securities. Related: active portfolio strategy

Pass-through rate

The net interest rate passed through to investors after deducting servicing, management,
and guarantee fees from the gross mortgage coupon.

Pass-through coupon rate

The interest rate paid on a securitized pool of assets, which is less than the rate
paid on the underlying loans by an amount equal to the servicing and guaranteeing fees.

Passive investment strategy

See: passive management.

Passive investment management

Buying a well-diversified portfolio to represent a broad-based market
index without attempting to search out mispriced securities.

Passive portfolio

A market index portfolio.

Payable through drafts

A method of making payment that is used to maintain control over payments made
on behalf of the firm by personnel in noncentral locations. The payer's bank delivers the payable through draft
to the payer, which must approve it and return it to the bank before payment can be received.

Private-label pass-throughs

Related: Conventional pass-throughs.

Project loan securities

securities backed by a variety of FHA-insured loan types - primarily multi-family
apartment buildings, hospitals, and nursing homes.

Public Securities Administration (PSA)

The trade association for primary dealers in U.S. government
securities, including MBSs.

Second pass regression

A cross-sectional regression of portfolio returns on betas. The estimated slope is the
measurement of the reward for bearing systematic risk during the period analyzed.

Securities & Exchange Commission

The SEC is a federal agency that regulates the U.S.financial markets.

Securities analysts

Related:financial analysts

Stripped mortgage-backed securities (SMBSs)

securities that redistribute the cash flows from the
underlying generic MBS collateral into the principal and interest components of the MBS to enhance their use
in meeting special needs of investors.

Throughput agreement

An agreement to put a specified amount of product per period through a particular
facility. For example, an agreement to ship a specified amount of crude oil per period through a particular
pipeline.

Treasury securities

securities issued by the U.S. Department of the Treasury.

Throughput contribution

Sales revenue less the cost of materials.

Securities and Exchange Commission (SEC)

The federal agency that
oversees the issuance of and trading in securities of public businesses.
The SEC has broad powers and can suspend the trading in securities of a
business. The SEC also has primary jurisdiction in making accounting
and financial reporting rules, but over the years it has largely deferred to
the private sector for the development of generally accepted accounting
principles (GAAP).

throughput

the total completed and sold output of a plant during a period

Securities and Exchange Commission (SEC)

Federal agency responsible for regulation of securities markets in the United
States.

Securities

A general term for stock, bonds, or other other financial assets.

Securities and Exchange Commission (SEC)

A federal agency that administers securities legislation,
including the securities Acts of 1933 and 1934. Public companies in the United States
must register their securities with the SEC and file with the agency quarterly and annual financial
reports.

Asset-Backed Securities

Bond or note secured by assets of company.

CARDs

Certificates of Amortized Revolving Debt. pass-through securities backed by credit card receivables.

CARs

Certificates of Automobile Receivables. pass-through securities backed by automobile receivables.

Collateralized mortgage obligation (CMO)

A security backed by a pool of pass-throughs , structured so that
there are several classes of bondholders with varying maturities, called tranches. The principal payments from
the underlying pool of pass-through securities are used to retire the bonds on a priority basis as specified in
the prospectus.
Related: mortgage pass-through security

Gnomes

Freddic Mac's 15-year, fixed-rate pass-through securities issued under its cash program.

Prepayment speed

Also called speed, the estimated rate at which mortgagors pay off their loans ahead of
schedule, critical in assessing the value of mortgage pass-through securities.

Securitization

The process of creating a passthrough, such as the mortgage pass-through security, by which
the pooled assets become standard securities backed by those assets. Also, refers to the replacement of
nonmarketable loans and/or cash flows provided by financial intermediaries with negotiable securities issued
in the public capital markets.

Variance rule

Specifies the permitted minimum or maximum quantity of securities that can be delivered to
satisfy a TBA trade. For Ginnie Mae, Fannie Mae, and Feddie Mac pass-through securities, the accepted
variance is plus or minus 2.499999 percent per million of the par value of the TBA quantity.

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