Glossary

Break-Even Point (BEP): The stock price(s) at which an option
strategy results in neither a profit nor loss.
Call: An option contract that gives the holder the right to buy
the underlying security at a specified price for a certain, fixed
period of time.
In-the-money: A call option is in-the-money if the strike price is
less than the market price of the underlying security. A put option
is in-the-money if the strike price is greater than the market
price of the underlying security.
Long position: A position wherein an investor is a net holder in a
particular options series.
Out-of-the-money: A call option is out-of-the-money if the strike
price is greater than the market price of the underlying security.
A put option is out-of-the-money if the strike price is less than
the market price of the underlying security.
Premium: The price a put or call buyer must pay to a put or call
seller (writer) for an option contract. Market supply and demand
forces determine the premium.
Put: An option contract that gives the holder the right to sell
the underlying security at a specified price for a certain, fixed
period of time.
Short position: A position wherein the investor is a net writer
(seller) of a particular options series.
Strike price or exercise price: The stated price per share for which
the underlying security may be purchased (in the case of a call)
or sold (in the case of a put) by the option holder upon exercise of
the option contract.
Synthetic position: A strategy involving two or more instruments
that has the same risk/reward profile as a strategy involving only
one instrument.
Time decay or erosion: A term used to describe how the time value
of an option can “decay” or reduce with the passage of time.
Volatility: A measure of the fluctuation in the market price of the
underlying security. Mathematically, volatility is the annualized
standard deviation of returns.