Add training workflow, datasets, and runbook

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50 Part II: Call Option Strategies
the written call would expire totally worthless and the writer might then write anoth­
er call on the same stock. Later, we discuss the subject of continuing to write against
stocks already owned. It will be seen that in many cases, it is advantageous to con­
tinue to hold a stock and write against it again, rather than to sell it and establish a
covered write in a new stock.
TABLE 2-6.
Downside break-even point-cash account.
Net investment
Less dividends
Total stock cost to expiration
Divide by shares held
Break-even price
$20,380
500
$19,880
+ 500
39.8
Next, we translate the break-even price into percent downside protection
(Table 2-7), which is a convenient way of comparing the levels of downside protec­
tion among variously priced stocks. We will see later that it is actually better to com­
pare the downside protection with the volatility of the underlying stock. However,
since percent downside protection is a common and widely accepted method that is
more readily calculated, it is necessary to be familiar with it as well.
Before moving on to discuss what kinds of returns one should attempt to strive
for in which situati_ons, the same example will be worked through again for a covered
write in a margin account. The use of margin will provide higher potential returns,
since the net investment will be smaller. However, the margin interest charge
incurred on the debit balance (the amount of money borrowed from the brokerage
firm) will cause the break-even point to be higher, thus slightly reducing the amount
of downside protection available from writing the call. Again, all commissions to
establish the position are included in the net investment computation.
TABLE 2-7.
Percent downside protection-cash account.
Initial stock price
Less break-even price
Points of protection
Divide by original stock price
Equals percent downside protection
43
-39.8
3.2
+43
7.4%