sails said:When I did the Optionetics course, they taught that you should always go out a minimum of 90 days for debit spreads
I agree Wayne - just checked their manual to make sure I had it right - and there it is in print! The rationale given at the seminars was that with a debit spread you are buying premium so you must have more time and, of course, the opposite for credit spreads. Anyway, I believe it is more to do with the positioning of the spread rather than just a blanket rule for all debit or credit spreads, eg. with an OTM bull call spread (or it's ITM bull put counterpart) it may be better to buy more time due to negative theta whereas an ITM bull call (OTM bull put counterpart) starts off as theta positive so technically better with less time.wayneL said:I don't get that one Margaret! Presuming the debit spread is ATM (i.e. the bought option is ITM and the written option is OTM), that amount of time, and particularly when IV, is high is going to flatten delta right out.
Spreads in near dated options do work well on a slow move, but since I actively hunt out potentially explosive moves, they seriously cap profits when right. If I don't get the move I want, can always spread the long off into a calendar or a vertical - lots of options (pun intendedRemembering, when playing an atm vertical, we by definition have an expectation of not much higher that the higher strike. Therefore one can get delta a lot cheaper (in other words less number of spreads and therefore less contest risk) with nearer dated options.
If they are at the same strikes and expiry month, they form a "box" spread. I first learned about them as well as other synthetic equivalents from Cottle's CWS and also Natenberg and McMillan explain boxes in their books. As an example, I just had a quick look at NAB currently trading at approx $35 and the June $35.00 / $34.50 box is priced as below:Magdoran said:...The key difference is the effect of time. Time is detrimental to debit spreads, while it is helpful for credit spreads. If the underlying goes sideways, the credit spread if positioned and entered correctly has a better chance of either becoming profitable, or at least breaking even than a debit spread. ...
Totally agree that this is so - but also the debit spread doesn't need closing out when it's wrong which reduces brokerage. However, if one has a large win rate with these, then it would be best to trade the bull puts to save on fees.... If the move is very favourable however, the credit spread expires worthless though reducing 2 legs of brokerage, where the debit spread requires some transaction to close it. ...
Agree - sold puts assignment don't have the risk of owing the dividend as sold calls do and is one of the reasons that dividends skew the box giving the illusion of a risk free trade....Traps for credit spreads:
Beware though, there is a catch! That is the prospect of being exercised, so be careful about selling too far in the money with too short a time and not enough time value premium sold. This is especially true for call spreads where you can end up owing the dividend, so be careful. If there is a prospect of early exercise, it is worth considering winding out the position pre-emptively to avoid this kind of risk. ...
Actually the example in my Optionetics manual is an ITM/OTM bull call spread, but agree that in the seminars they would teach selecting the best risk to reward as you have outlined above, however, their bull put example is an ATM/OTM spread. I discussed this in a post to Wayne today where I believe that it actually depends more on where the spreads are positioned to determine their sensitivity to theta - not because they are a debit or credit spreads. No question that an OTM/ATM bull put will behave differently to an ATM/OTM bull call (where the bull put sold strike is ATM and the bull call sold strike is OTM),As for the Optionetics approach, I suspect that they have tailored the bull call spreads to the US market, and favour the OTM approach over the ATM/ITM versions. The main aim is to have small debit amounts, and get a risk/reward graph with more maximum profit potential to maximum loss (they describe this sometimes as “bet a Volkswagen against a Ferrari” – no offence to VW drivers!). The aim is to select the best bull call spread which has the most chance of success combined with a favourable risk/reward graph and a low debit entry. They also try to avoid theta decay in debit positions, presumably to reduce this risk for part time traders…
sails said:- just checked their manual to make sure I had it right - and there it is in print!
sails said:Wayne, it wasn't until I learned about synthetics, boxes, etc that I realised that there was never any need to do an ITM bull put spread and struggle with wide bid/ask spreads). Much easier to the OTM bull call counterpart (same strikes) then, if the sold call doesn't have enough value to sell, as you say, just buy the call - fees are less, slippage is better, etc.
Undertanding synthetic equivalents has made option jigsaw puzzle pieces fit better into place.
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