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One approach is to take action when your personal risk threshold is reached. If your risk threshold is low, you might choose to take defensive action early....when is the best time to take defensive action
The good news is that there is a myriad defensive measures. The bad news is that applying them effectively will depend on the current and future market conditions. Ask a pilot about defensive measures in averting a plane crash, and he will probably check is altitude, speed, wind speed and direction, weight, fuel level, etc, before deciding.what type of defensive measure (i.e. Close out current spread and re-do lower down? Roll down? Roll out?)
Hi All
I have been trading options (credit spreads) for a little while now and would like opinions on the best defensive measures if the trade goes against us and when to activate these defensive measure...
As an example a trade I took a few weeks back when ANZ was trading around $21.50...I sold 20 x $21.50 Jan Puts and bought 20 x $21.00 Jan Puts...If ANZ had in fact fallen rather than headed north when is the best time to take defensive action and what type of defensive measure (i.e. Close out current spread and re-do lower down? Roll down? Roll out?) Much appreciated....
I hate defending credit spreads. I think they are a pig of a thing to defend, unless as one half of a condor where I can manage delta neutrality effectively.
What you have to understand is that you are playing a statistical game with credit spreads. You have to think like an insurance actuary.
I haven't trades a credit spread since April. Although they would have been easily profitable, the actual odds didn't stack up well enough for me, and it keeps getting worse as volatility declines.
Doesn't mean they won't profit, but it means that the odds are not in my favour, and I only take on that sort of risk/reward scenario when the odds are well stacked on my side.
Defence costs money and the profit margin is already skinny with CS's.
Just something to think about.
While the market continues to trend broadly upwards, you will get away with such adjustments.
A nasty bear will disembowel you however with both delta and vega.
What I'm trying to get across is that the strikes and ajustments are unimportant, it is the odds/stats that are important.
No matter what you do, you just have to receive more nett premium than is warranted by the statistical risk. If it's the other way 'round, you most likely will eventually lose.
There are hundreds of corpses of credit spread traders as a result of the recent bear, because they didn't understand this.
While the market continues to trend broadly upwards, you will get away with such adjustments.
A nasty bear will disembowel you however with both delta and vega.
What I'm trying to get across is that the strikes and ajustments are unimportant, it is the odds/stats that are important.
No matter what you do, you just have to receive more nett premium than is warranted by the statistical risk. If it's the other way 'round, you most likely will eventually lose.
There are hundreds of corpses of credit spread traders as a result of the recent bear, because they didn't understand this.
Wayne
Sorry to trouble you again and I hope you dont mind me asking questions, they may sound sill at times, but how do you determine the odds/stats before you enter a trade? do you have a formula you run or equation?
The straight statistical approach is to use either stat vol or implied vol (or a reasonable projection of your own) to determine the probabilities of your position expiring in the money.
Next step is to determine the premium received versus risk to see if the straight out risk/reward is worth it.
So if you determine that you have a statistical 70% chance of success, the premium received from the spread must be greater than 30% of the spread.
In addition, other analysis can be added to see whether the 70% probability is valid, or whether there is some increased probability based on statistics.
If so, you have a trade that stacks up. If not, better to stand aside.
That's how I do it.
I use my own custom formula in Amibroker.
Maybe I'll post up a way of doing it later on.
As an example a trade I took a few weeks back when ANZ was trading around $21.50...I sold 20 x $21.50 Jan Puts and bought 20 x $21.00 Jan Puts
G'Day costa,
I'm not knocking you and I haven't checked prices but why have you chosen to go min strike between the two contracts as opposed to half the size but further apart ?
Hi costa,
I don't really do straight out credit spreads as such but from my point of view strikes so close together wouldn't have enough positive theta for my liking, pretty much all or nothing.
And as mazza pointed out more of a directional play, I'm not really suited to that type of style but I see what you're getting at with rolling.
They are designed to be outright bets - not to be hedged around.
If you insist on the strategy, you can sell shares into the short strike at an increasing rate
Thanks Cutz
A quick question for you, if I was to sell 10 x $21.00 and buy $20.00, thus a $1 strike differential and the sold strike was threatened what type of defense is best or practical?
Hi Costa,
Start shorting some ANZ, good luck if you can do it on the oz market. If your short strikes are threatened on a bull put spread it means that your original directional view was wrong and rather than fight the trend delta hedge or exit the trade.
Personally I prefer to deal with european style options on bigger positions and have some back month long gamma on (in the first place).
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