Definition of CBOE

CBOE

Chicago Board Options Exchange. A securities exchange created in the early 1970s for the public
trading of standardized option contracts.

Abandonment option

The option of terminating an investment earlier than originally planned.

American option

An option that may be exercised at any time up to and including the expiration date.
Related: European option

American Stock Exchange (AMEX)

The second-largest stock exchange in the United States. It trades
mostly in small-to medium-sized companies.

American-style option

An option contract that can be exercised at any time between the date of purchase and
the expiration date. Most exchange-traded options are American style.

Arbitrage-free option-pricing models

Yield curve option-pricing models.

Asian option

option based on the average price of the asset during the life of the option.

Bargain-purchase-price option

Gives the lessee the option to purchase the asset at a price below fair market
value when the lease expires.

Barrier options

contracts with trigger points that, when crossed, automatically generate buying or selling of
other options. These are very exotic options.

Basket options

Packages that involve the exchange of more than two currencies against a base currency at
expiration. The basket option buyer purchases the right, but not the obligation, to receive designated
currencies in exchange for a base currency, either at the prevailing spot market rate or at a prearranged rate of
exchange. A basket option is generally used by multinational corporations with multicurrency cash flows
since it is generally cheaper to buy an option on a basket of currencies than to buy individual options on each
of the currencies that make up the basket.

Big Board

A nickname for the New York Stock exchange. Also known as The exchange. More than 2,000
common and preferred stocks are traded. Founded in 1792, the NYSE is the oldest exchange in the United
States, and the largest. It is located on Wall Street in New York City.

Bill of exchange

General term for a document demanding payment.

Binomial option pricing model

An option pricing model in which the underlying asset can take on only two
possible, discrete values in the next time period for each value that it can take on in the preceding time period.

Black-Scholes option-pricing model

A model for pricing call options based on arbitrage arguments that uses
the stock price, the exercise price, the risk-free interest rate, the time to expiration, and the standard deviation
of the stock return.

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.

Call an option

To exercise a call option.

Call option

An option contract that gives its holder the right (but not the obligation) to purchase a specified
number of shares of the underlying stock at the given strike price, on or before the expiration date of the
contract.
Call premium
Premium in price above the par value of a bond or share of preferred stock that must be paid to
holders to redeem the bond or share of preferred stock before its scheduled maturity date.

Cash settlement contracts

Futures contracts, such as stock index futures, that settle for cash, not involving
the delivery of the underlying.

Chicago Mercantile Exchange (CME)

A not-for-profit corporation owned by its members. Its primary
functions are to provide a location for trading futures and options, collect and disseminate market information,
maintain a clearing mechanism and enforce trading rules.

Commodities Exchange Center (CEC)

The location of five New York futures exchanges: Commodity
exchange, Inc. (COMEX), the New York Mercantile exchange (NYMEX), the New York Cotton exchange,
the Coffee, Sugar and Cocoa exchange (CSC), and the New York futures exchange (NYFE). common size
statement A statement in which all items are expressed as a percentage of a base figure, useful for purposes of
analyzing trends and the changing relationship between financial statement items. For example, all items in
each year's income statement could be presented as a percentage of net sales.

Compound option

option on an option.

Conditional sales contracts

Similar to equipment trust certificates except that the lender is either the
equipment manufacturer or a bank or finance company to whom the manufacturer has sold the conditional
sales contract.

Convertible exchangeable preferred stock

Convertible preferred stock that may be exchanged, at the
issuer's option, into convertible bonds that have the same conversion features as the convertible preferred
stock.

Covered or hedge option strategies

Strategies that involve a position in an option as well as a position in the
underlying stock, designed so that one position will help offset any unfavorable price movement in the other,
including covered call writing and protective put buying. Related: naked strategies

Currency option

An option to buy or sell a foreign currency.

Day trading

Refers to establishing and liquidating the same position or positions within one day's trading.

Dealer options

Over-the-counter options, such as those offered by government and mortgage-backed
securities dealers.

Debt securities

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

Delivery options

The options available to the seller of an interest rate futures contract, including the quality
option, the timing option, and the wild card option. Delivery options make the buyer uncertain of which
Treasury Bond will be delivered or when it will be delivered.

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.

Doubling option

A sinking fund provision that may allow repurchase of twice the required number of bonds
at the sinking fund call price.

Down-and-in option

Barrier option that comes into existence if asset price hits a barrier.

Down-and-out option

Barrier option that expires if asset price hits a barrier.

Elasticity of an option

Percentage change in the value of an option given a 1% change in the value of the
option's underlying stock.

Embedded option

An option that is part of the structure of a bond that provides either the bondholder or
issuer the right to take some action against the other party, as opposed to a bare option, which trades
separately from any underlying security.

Equity options

securities that give the holder the right to buy or sell a specified number of shares of stock, at
a specified price for a certain (limited) time period. Typically one option equals 100 shares of stock.

European option

option that may be exercised only at the expiration date. Related: american option.

European-style option

An option contract that can only be exercised on the expiration date.

Exchange

The marketplace in which shares, options and futures on stocks, bonds, commodities and indices
are traded. Principal US stock exchanges are: New York Stock exchange (NYSE), American Stock exchange
(AMEX) and the National Association of securities Dealers (NASDAQ)

The Exchange

A nickname for the New York stock exchange. Also known as the Big Board. More than
2,000 common and preferred stocks are traded. The exchange is the oldest in the United States, founded in
1792, and the largest. It is located on Wall Street in New York City.

Exchange controls

Governmental restrictions on the purchase of foreign currencies by domestic citizens or
on the purchase of the local domestic currency by foreigners.

Exchange of assets

Acquisition of another company by purchase of its assets in exchange for cash or stock.

Exchange of stock

Acquisition of another company by purchase of its stock in exchange for cash or shares.

Exchange offer

An offer by the firm to give one security, such as a bond or preferred stock, in exchange for
another security, such as shares of common stock.

Exchange rate

The price of one country's currency expressed in another country's currency.

Exchange Rate Mechanism (ERM)

The methodology by which members of the EMS maintain their
currency exchange rates within an agreed upon range with respect to other member countries.

Exchange rate risk

Also called currency risk, the risk of an investment's value changing because of currency
exchange rates.

Exchange risk

The variability of a firm's value that results from unexpected exchange rate changes or the
extent to which the present value of a firm is expected to change as a result of a given currency's appreciation
or depreciation.

Exchangeable Security

Security that grants the security holder the right to exchange the security for the
common stock of a firm other than the issuer of the security.

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.

Exercising the option

The act buying or selling the underlying asset via the option contract.

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.

Fixed-exchange rate

A country's decision to tie the value of its currency to another country's currency, gold
(or another commodity), or a basket of currencies.

Floating exchange rate

A country's decision to allow its currency value to freely change. The currency is not
constrained by central bank intervention and does not have to maintain its relationship with another currency
in a narrow band. The currency value is determined by trading in the foreign exchange market.

Foreign currency option

An option that conveys the right to buy or sell a specified amount of foreign
currency at a specified price within a specified time period.

Foreign exchange

Currency from another country.

Foreign exchange controls

Various forms of controls imposed by a government on the purchase/sale of
foreign currencies by residents or on the purchase/sale of local currency by nonresidents.

Foreign exchange dealer

A firm or individual that buys foreign exchange from one party and then sells it to
another party. The dealer makes the difference between the buying and selling prices, or spread.

Foreign exchange risk

The risk that a long or short position in a foreign currency might have to be closed out
at a loss due to an adverse movement in the currency rates.

Foreign exchange swap

An agreement to exchange stipulated amounts of one currency for another currency
at one or more future dates.

Forward exchange rate

exchange rate fixed today for exchanging currency at some future date.

Free on board

Implies that distributive services like transport and handling performed on goods up to the
customs frontier of the economy from which the goods are classed as merchandise.

Futures option

An option on a futures contract. Related: options on physicals.

Garmen-Kohlhagen option pricing model

A widely used model for pricing foreign currency options.

Gold exchange standard

A system of fixing exchange rates adopted in the Bretton Woods agreement. It
involved the U.S. pegging the dollar to gold and other countries pegging their currencies to the dollar.

Government securities

Negotiable U.S. Treasury securities.

Greenshoe option

option that allows the underwriter for a new issue to buy and resell additional shares.

Historical exchange rate

An accounting term that refers to the exchange rate in effect when an asset or
liability was acquired.

Index and Option Market (IOM)

A division of the CME established in 1982 for trading stock index
products and options. Related: Chicago Mercantile exchange (CME).

Index option

A call or put option based on a stock market index.

Initial public offering (IPO)

A company's first sale of stock to the public. securities offered in an IPO are
often, but not always, those of young, small companies seeking outside equity capital and a public market for
their stock. Investors purchasing stock in IPOs generally must be prepared to accept very large risks for the
possibility of large gains. IPO's by investment companies (closed-end funds) usually contain underwriting
fees which represent a load to buyers.

Insider trading

trading by officers, directors, major stockholders, or others who hold private inside
information allowing them to benefit from buying or selling stock.

Intrinsic value of an option

The amount by which an option is in-the-money. An option which is not in-themoney
has no intrinsic value. Related: in-the-money.

Irrational call option

The implied call imbedded in the MBS. Identified as irrational because the call is
sometimes not exercised when it is in the money (interest rates are below the threshold to refinance).
Sometimes exercised when not in the money (home sold without regard to the relative level of interest rates).

Last trading day

The final day under an exchange's rules during which trading may take place in a particular
futures or options contract. contracts outstanding at the end of the last trading day must be settled by delivery
of underlying physical commodities or financial instruments, or by agreement for monetary settlement
depending upon futures contract specifications.

Liquid yield option note (LYON)

Zero-coupon, callable, putable, convertible bond invented by Merrill

London International Financial Futures Exchange (LIFFE)

A London exchange where Eurodollar futures
as well as futures-style options are traded.

Lookback option

An option that allows the buyer to choose as the option strike price any price of the
underlying asset that has occurred during the life of the option. If a call, the buyer will choose the minimal
price, whereas if a put, the buyer will choose the maximum price. This option will always be in the money.

Liquid yield option note (LYON)

Zero-coupon, callable, putable, convertible bond invented by Merrill Lynch & Co.

London International Financial Futures Exchange (LIFFE)

London exchange where Eurodollar futures as well as futures-style options are traded.

Manufactured housing securities (MHSs)

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

Margin requirement (Options)

The amount of cash an uncovered (naked) option writer is required to
deposit and maintain to cover his daily position valuation and reasonably foreseeable intra-day price changes.

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.

Multi-option financing facility

A syndicated confirmed credit line with attached options.

Naked option strategies

An unhedged strategy making exclusive use of one of the following: Long call
strategy (buying call options ), short call strategy (selling or writing call options), Long put strategy (buying
put options ), and short put strategy (selling or writing put options). By themselves, these positions are called
naked strategies because they do not involve an offsetting or risk-reducing position in another option or the
underlying security.
Related: covered option strategies.

New York Stock Exchange (NYSE)

Also known as the Big Board or The Exhange. More than 2,00 common
and preferred stocks are traded. The exchange is the older in the United States, founded in 1792, and the
largest. It is lcoated on Wall Street in New York City

Nexus (of contracts)

A set or collection of something.

Nominal exchange rate

The actual foreign exchange quotation in contrast to the real exchange rate that has
been adjusted for changes in purchasing power.

Open contracts

contracts which have been bought or sold without the transaction having been completed by
subsequent sale or purchase, or by making or taking actual delivery of the financial instrument or physical
commodity.

Option

Gives the buyer the right, but not the obligation, to buy or sell an asset at a set price on or before a
given date. Investors, not companies, issue options. Investors who purchase call options bet the stock will be
worth more than the price set by the option (the strike price), plus the price they paid for the option itself.
Buyers of put options bet the stock's price will go down below the price set by the option. An option is part of
a class of securities called derivatives, so named because these securities derive their value from the worth of
an underlying investment.

Option elasticity

The percentage increase in an option's value given a 1% change in the value of the
underlying security.

Option not to deliver

In the mortgage pipeline, an additional hedge placed in tandem with the forward or
substitute sale.

Option premium

The option price.

Option price

Also called the option premium, the price paid by the buyer of the options contract for the right
to buy or sell a security at a specified price in the future.

Option seller

Also called the option writer , the party who grants a right to trade a security at a given price in
the future.

Option writer

option seller.

Option-adjusted spread (OAS)

1) The spread over an issuer's spot rate curve, developed as a measure of
the yield spread that can be used to convert dollar differences between theoretical value and market price.
2) The cost of the implied call embedded in a MBS, defined as additional basis-yield spread. When added to the
base yield spread of an MBS without an operative call produces the option-adjusted spread.

Options contract

A contract that, in exchange for the option price, gives the option buyer the right, but not
the obligation, to buy (or sell) a financial asset at the exercise price from (or to) the option seller within a
specified time period, or on a specified date (expiration date).

Options contract multiple

A constant, set at $100, which when multiplied by the cash index value gives the
dollar value of the stock index underlying an option. That is, dollar value of the underlying stock index = cash
index value x $100 (the options contract multiple).

Options on physicals

Interest rate options written on fixed-income securities, as opposed to those written on
interest rate futures contracts.

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