UNDERSTANDING ASSIGNMENT RISK
Option sellers collect a cash premium. That's
the primary reason that investors sell an option. When that option expires
worthless, the cash premium represents the option seller's profit, but it does
involve some risk of losing money. Pretty simple stuff.
Similarly, traders may sell an option as part of a spread position.
Once again, collecting a cash premium drives the sale. However, this time, the
cash collected is used as a hedge,
or a trade that offsets the risk of owning another position. Hedging is a bit
more complex than simply selling an option. For example, when you buy one call
option (hoping for the stock to rally), you can sell a different option,
collect some cash, and reduce the sum of money at risk -- just in case your
expected rally does not occur. The concept is easy to understand once you learn
to understand how options work.) About options for beginners will help.
Options do not always expire worthless, and it is essential that every
option trader understands what happens when the option does not expire
worthless.
Whenever you sell (write) an option that you do not already own, you
become legally obligated to honor the terms of the option contract sold.
WHAT ARE THOSE OBLIGATIONS?
The call seller
agrees to sell 100 shares of the underlying stock to the call owner. The trade
occurs at the option strike price.
This obligation remains in effect until the option expires.
The put seller
agrees to buy 100 shares of the underlying stock from the put owner. The trade
occurs at the option strike price. This obligation remains in effect
until the option expires.
WHAT TRIGGERS THE OBLIGATIONS?
The obligations
are only theoretical until something happens that triggers the process. Call owners have the right to
force the option seller to honor his/her obligations by exercising those rights. As soon
as the call owner instructs his/her broker to exercise, the option seller's
obligations are triggered. Note that the option seller cannot force
the option owner to exercise. That decision rests entirely with the option owner
who bought the option and paid cash to own the right to exercise.