Risk Management
There are more kinds of risk than there are investments,
since every instrument carries several kinds. But risk isn't
inherently bad. Without it there'd be fewer opportunities for
profit.
The fundamental risk, of course, is price uncertainty. No
one knows for sure whether GOOG (the symbol for Google stock)
will be higher tomorrow or lower.
Options, like futures or bonds, carry an additional risk -
at some point, from a day to several months or years, they
expire. On or before that date, the holder has to decide
whether to sell the contract, exercise the option to buy or
sell the underlying asset, or simply let the option expire.
Each of these choices carries implications for gain or loss
and all are uncertain (to some degree) with respect to the size
of that outcome.
Complicating the price and timing risks of options is their
volatility risk. It's uncertain, on any given day, how much the
price will vary and how rapidly.
Ironically, options themselves are forms of risk management.
Since the underlying asset, say a stock or bond, has risks as
an investment buying options allows holders to compensate for
them.
Leverage is one form in which options help to manage risk.
Leverage is the ability to control more than you own. Suppose
you want to purchase a 100 shares of Google. At the current
market price that's an outlay of around $40,000 (excluding
commission). That's a hefty sum for the average investor.
But you can control 100 shares of GOOG without owning them
for less than 1/10th the cost - currently around $2800 - the
price of one option. (One options contract typically is written
on 100 shares.)
How is that a form of risk management? The reason is there's
another kind of risk: principal risk. I.e the risk of losing
(all or part of) your investment. (Actually this is a form of
price risk.)
Purchase a 100 shares of GOOG and you stand to lose $40,000
in the (very unlikely) case that Google goes bust. (Unlikely,
but not impossible. Rapid shifts in technology or other factors
have tanked more than one high-tech stock. 3Com and Cisco are
two good examples. Though not zero, their shares experienced
considerable declines in the past few years.)
Purchase one option instead and your principal risk is
limited to the - painful if lost, but much smaller - amount of
the premium: $2800, the cost of the options. (Excluding
commissions.)
Of course, the example is a little unfair since the odds of
Google stock going to zero is itself close to zero. But there
are companies for whom the odds are not so favorable and the
principle (pun intended) is the same.
So, how do you manage these risks? Simple, but not easy.
Start by identifying all the known risk factors and
quantifying them. (Simple in that identifying and measuring
them is straightforward, but minimizing them is anything but
easy.)
Fortunately, there are several different software product
offerings that will help you do that. It's no longer necessary
to be a finance and mathematics wizard. The software
incorporates the algorithms used by experts to measure various
factors - such as delta, theta, vega, volatility and others -
that can affect your potential profit or loss.
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