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According to the terms of a put contract, a put writer is obligated to purchase an equivalent
number of underlying shares at the put's strike price if assigned an exercise notice on the
written contract. Many investors write puts because they are willing to be assigned and
acquire shares of the underlying stock in exchange for the premium received from the put's
sale. For this discussion, a put writer will be considered "covered" if he has on deposit with
his brokerage firm a cash amount (or other approved collateral) sufficient to cover such a
purchase.
Neutral to slightly bullish.
There are two key motivations for employing this strategy: either as an attempt to purchase
underlying shares below current market price, or to collect and keep premium from the sale
of puts which expire out-of-the-money and with no value. An investor should write a covered
put only when he would be comfortable owning underlying shares, because assignment is
always possible at any time before the put expires. In addition, he should be satisfied that
the net cost for the shares will be at a satisfactory entry point if he is assigned an exercise.
The number of put contracts written should correspond to the number of shares the investor is comfortable and financially capable of purchasing. While assignment may not be the objective
at times, it should not be a financial burden. This strategy can become speculative when more
puts are written than the equivalent number of shares desired to own.
The put writer collects and keeps the premium from the put's sale, no matter how much the
stock increases or decreases in price. If the writer is assigned, he is then obligated to purchase
an equivalent amount of underlying shares at the put's strike price. The premium received from
the put's sale will partially offset the purchase price for the stock, and can result in a purchase
of shares below the current market price. If the underlying stock price declines significantly and
the put writer is assigned, the purchase price for the shares can be above current market price.
In this case, the put writer will have an unrealized loss due to the high stock purchase price, but
will have upside profit potential if retaining the purchased shares.
Maximum
Profit: Limited
Premium Received
Maximum
Loss: Unlimited
Upside
Profit at Expiration: Premium Received from Put Sale
Net Stock Purchase Price if Assigned: Strike
Price - Premium Received from Put Sale
If
the underlying stock increases in price and the put expires with no value,
the profit is limited
to the premium received from the put's initial sale. On the other hand,
an outright purchase of
underlying stock would offer the investor unlimited upside profit potential.
If the underlying stock
declines below the strike price of the put, the investor might be assigned
an exercise notice and
be obligated to purchase an equivalent number of shares. The net stock
purchase price would be
the put's strike price less the premium received from the put's sale.
This price can be less than
current market price for the stock when assignment is made.
The
loss potential for this strategy is similar to owning an equivalent number
of underlying shares. Theoretically, the stock price can decline to zero.
If assignment results in the purchase of stock
at a net price greater than the current market price, the investor would
incur a loss - unrealized
as long as ownership of the shares is retained.
BEP:
Strike Price - Premium Received from Sale of Put
If
Volatility Increases: Negative
Effect
If Volatility Decreases: Positive Effect
Any
effect of volatility on the option's total premium is on the time value
portion.
Passage
of Time: Positive Effect
With
the passage of time, the time value portion of the option's
premium generally decreases - a positive effect for an investor
with a short option position.
If the investor's opinion about the underlying stock changes before the put expires, the investor
can buy the same contract in the marketplace to "close out" his position at a realized loss. After
this is done, no assignment is possible. The investor is relieved from any obligation to purchase underlying stock.
If the short option has any value when it expires, the investor will most likely be assigned an
exercise notice and be obligated to purchase an equivalent number of shares. If owning the
underlying shares is not desired at this point, the investor can close out the written put by
buying a contract with the same terms in the marketplace. Such a purchase would have to
occur before the end of market hours on the option's last trading day, and could result in a
realized loss. On the other hand, the investor is obliged to take delivery of the underlying shares
at a possible unrealized loss.
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