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Exchange
Traded Options
Please read our Disclaimer
before continuing to read our information.
Johnston Investment Management Pty Ltd does not give
investment advice and we are not recommending the trading of options.
The product/s you trade should be your personal choice after you
have investigated every aspect of trading it. Our objective is to
educate our clients and provide an effective futures brokerage service,
as we believe that you are the best person to manage your investments
and future. It's our goal to give people an unbiased view of all
the trading vehicles available, including options.
The
Options Market
The
options market is marketed to be a limited risk and unlimited profit
potential trading vehicle. This concerns me as this may be true
in theory when buying options, the reality is often different as
most options end up worthless. For the knowledgeable trader with
good trading skills, the options market can be very profitable.
Our clients who have made the highest percentage profits are options
traders. For inexperienced traders the trading of options can be
very difficult because of the particular trading skills needed to
capture profits in this volatile market before the asset wastes
away.
An
option is a derivative. That is, its value is derived from something
else. In the case of a stock option, its value is based on the underlying
stock (equity). In the case of an index option, its value is based
on the underlying index.
Both
the purchase and sale of options involve a degree of risk and are
not suitable for all investors. Options transactions should be entered
into only by investors who understand the nature and extent of their
rights and obligations, and are aware of the risks involved.
An
investor should not purchase an option unless they are able to afford
a total loss of premium and transaction costs, and should not sell
an option unless they either own the underlying security or are
able to sustain substantial financial losses.
Buyers
(Takers)
The
buyer has the right, not the obligation, to purchase the underlying
security at a specific price within a specific time period. Theoretically,
the profit potential is unlimited, while the risk is limited to
the amount paid for the option.
Sellers
(Writers)
The
Seller has the obligation to deliver the underlying security at
a specific price within a specific time period if exercised against.
Theoretically, the profit is limited to the premium paid and the
risk is unlimited.
Option
Clearing House
The
Options Clearing House is the central organisation through which
all options are traded. The rules of the Australian Options Market
requires that an investor have an account approved by a clearing
member of The Australian Options Market before being permitted to
take (buy) or write (sell) options. The client's broker is required
by the Exchange to obtain information as to the client's investment
objectives and financial situation, so that their suitability for
trading in options can be assessed. Some Clearing Members may impose
their own additional requirements, such as a minimum amount in a
client's account, before approving clients for options trading.
Clients are required by the Exchange to agree that they will abide
by the Rules of the OCH.
Expiry
Dates
The
expiry date is usually the last Thursday before the last Friday
of the expiry month unless the OCH determines another date.
Puts
And Calls
Options
come in two primary forms. They are calls and puts.
A
call option gives the holder the right, not the obligation, to buy
1000 shares of the underlying stock at a fixed price and for a fixed
period of time. Traders buy calls to profit in a rising market.
A
put option gives the holder the right, not the obligation, to sell
1000 shares of the underlying stock for a fixed price and for a
fixed period of time. Traders buy put options to profit in a falling
market.
This
is why an option is considered to be a 'wasting' asset. Since the
option only has value for a fixed period of time, its value decreases,
or 'wastes' away with the passage of time.
Index
Options
In
the case of an index option, the holder can participate in the movement
of the index. However, these options are cash settled and therefore,
the holder of the option will never wind up with a position in the
underlying securities.
The
Four Components To An Option
Once
the Security is selected, there are four components to an option.
Three Fixed and one variable:
Fixed
: The number of shares, the strike price, and the expiration date.
Variable
: The premium (Price)
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Let's
take an ANZ: May 02 18.00 call @ 0.35c
The underlying security: ANZ
Option type: Call
Number
of shares: 1000
The
strike price: 18.00
The
expiration date: 30th May 2002
The
premium: 0.35c
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Types
Of Options
There
are two different types of options with respect to expiration. There
is a European style option and an American style option. The European
style option cannot be exercised until the expiration date. Once
an investor has purchased the option, it must be held until expiration.
An American style option can be exercised at any time after it is
purchased. Today, most stock options which are traded are American
style options. And many index options are American style. However,
there are many index options which are European style options. An
investor should be aware of this when considering the purchase of
an index option.
At-The-Money,
In-The-Money, Out-Of-The-Money
There
are three different terms for describing where an option is trading
in relation to the price of the underlying security. These terms
are 'at-the-money', 'in-the-money', and 'out-of-the money'. Knowing
which one of the above to trade is important, as it will affect
the volume, volatility, percentage price movement and your trading
style. In short 'in-the- money' are less volatile and more expensive,
and ' out-of-the-money' are more volatile and less expensive.
Intrinsic
Value
The
price difference between the underlying security and the option's
strike price is the intrinsic value.
Time
Value
Time
value is the amount by which the price of the option exceeds its
intrinsic value.
Intrinsic
Value + Time Value = Option Price
What
is Influencing the Price of an Option
There are four
major factors which determine the price of an option. They are:
- The price
of the underlying stock
- The strike
price of the option itself
- The time
remaining until the option expires
- The volatility
of the underlying stock
An options
price decays each day it is in existence. Further, the closer the
option gets to expiration, the faster it decays
Volatility
The volatility
part of the pricing model is a measure of the range the underlying
security is expected to fluctuate over a given period of time. The
measurement of volatility is the standard deviation of the daily
price changes in the security. The more volatile the underlying
security, the greater the price of the option.
Delta
Delta is the
rate of change of an option premium relative to the price of the
underlying security.
Option
Pricing
There are many
different option pricing models in practice. However, the original
breakthrough was in the Black-Scholes model. It was a model for
pricing options before options were widely traded. The original
Black Scholes model worked primarily for European style options.
However, it has been modified to work with American style expiration.
There are
several option pricing models around today, but the fact remains,
that an option is only worth what a buyer and seller agree to trade
at. It doesn't matter what someone thinks it is worth. Understanding
how to manage your trade entry and exit in options is a vital part
of your option trading skills.
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