mswiggs said:Well I guess if I want to find out if the strategy will work ill have to save up for the 2x risk margin so they will let me do it :s .
Mick
Also known as a "box" trade - normally no directional risk and cannot lose or make money unless there is an arbitrage opportunity which, as I understand it, is extremely rare as the market makers do not give money awaymswiggs said:Here are the reasons for putting on the trade:
Limit of risk due being synthetically long and synthetically short which counters any directional risk.
This is the catch as I understand, it is not volatility disparity but the dividend. During the cum-dividend period, the dividend is factored into the puts and calls making the puts more expensive and the calls cheaper, hence the disparity. ITM (in-the-money) puts usually have the entire dividend added into their pricing.Being able to take advantage of a volitility disparity between puts and calls, where puts where more "expensive" than calls.
I rarely use credit spreads, so not sure of margin requirements. Have you also calculated the cost of brokerage should you need to close some or all the position or if you are assigned on one side?Return on investment, according to risk margin calculations the largest amount of capital I would have to use would be $19.00 (however to be conservative, the asx margin estimator discloses that its estimates are most likely within 10% of the actual amount used by ACH, therefore i will add 10% to the estimation, $20.90),however this excludes brokerage which account for approximately 50% of gross profit expenses leaving 50% of the gross profit as net profit.
Because you are in a box spread, IV should be fully hedged, so I can't see that you would see any change to your position due to IV fluctuations. When the dividend is announced at earnings, if it is different to what the market is expecting, then that will be more likely affect the pricing of the spread and not IV.There is one main risk and that is if puts continue to become more expensive in terms of implied volitility, which would increase premium margin and put the strategy at a loss if I had to liquidate the position.
I am not sure whether the options will actually conform to your calculations - I would suggest that you continue to track this trade and see what actually happens.Also the other risk, the reason behind this thread, is if the margin estimates are entirely wrong, according to the broker they are, and should be more than 100times my estimate required :s .
The numbers:
No. of times:5 * 4 contracts
Initial Capital: $20.90 * 5 = $82.50 plus brokerage? $347.50
Initial Brokerage:
1750 * 5 *1.1% = 96.25
1060* 5 *1.1% = 58.30
$44
$44
$243.00 (atleast someones makin money)
Estimated gross profit: $340 * 5= $1700.00 if left until expiry
however because i intend on exiting before expiry theta will be used where theta will be an estimate of (14.75 * 5 =$73.75) * 14 days until day before ex div. = $1032.50 (which leaves more than $600.00 for the last 3 days :s maybe i underestimated any comments?)
For the moment I use the figure of $1032.50 as gross profit.
Net Profit= 1032.50 - 243.00*2 = $546.50
ROI=546.50/347.50 = 157% return :s
This would leave you long or short the shares leaving you in a similar position. Problem is that you are more likely to be assigned the short calls before the dividend and be liable to pay the dividend - and then be assigned the short puts after the dividend - and you miss out on receiving the dividend.Exercise of options: If the sold put was exercised then the position would be exited at a net profit, because the intrinsic value(profit) would be rocognised, however in the case that either of the other three options still open would cause the trade to go into a loss, then i would sell the exercised put again and keep the trade open until the next event. In the case that the call is exercised the I would apply the same process, however it is more likely that the option would have to be sold again to keep the trade open because there is less time value to be gained from the sold call.
Assignment is usually more to do with the dividends than anything else in this situation. As I mentioned before, it is possible to keep the profit IF CBA is BELOW your $43 strike by ex-dividend day.Also for one of the options to be exercised the price would have to move deeply past the strikes. Which would bring the trade into profit quicker (because of gamma?)
Yes, the spread has shown some profit as CBA moved down - keep watching it closely and see how it continues to behave - great learning experienceAlso as of Friday Risk margin is -$577.00 (according to asx margin estimator), which means it actually reduces the amount of premium margin required to hold the trade open ( i think) and can be used to offset other open positions that have margins (it think).
And premium margin is $9000.00 compared to $9200.00, which recognises $200.00 of gross profit. however i expect this to fluctuate back and forth.
wayneL said:Afor you Margaret.
Great post.
I was never taught this in an options course, but fortunately I learned about it from others who shared their grief on a US forum - I then checked with my broker and sent an email to the ASX - both confirmed that it was also applicable here in Australia. So it pays to be very careful with short calls as ex-div approaches!mswiggs said:Thanks Sails,
"Problem is that you are more likely to be assigned the short calls before the dividend and be liable to pay the dividend" I dont understand this I think its something i havent come across
sails said:....the resident options guru
wayneL said:Lets just say I learned how to dodge bullets before actually getting hit by one
mre83 said:Hey Magdoran
Just a quick question regarding your margin calculation in the $1,160 example. Is that the same for all brokers or do some brokers calculate differently. Thnaks
Mre
Hello Mre,mre83 said:Hey Magdoran
Just a quick question regarding your margin calculation in the $1,160 example. Is that the same for all brokers or do some brokers calculate differently. Thnaks
Mre
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