Fox
Whale, shark, eel, plankton
- Joined
- 15 August 2009
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Did the visual comparison of falling IV for various back month wrangles using Hoadley. The results really do speak for themselves.For a visual look at it, enter a long straddle or strangle (or even a wrangle) into Hoadley in a back month. Copy that to the comparison table and then alter IV up or down in one of them. (I think I used to enter IV manually with copy & paste rather than use the Hoadley button which changes IV for both.) You will get a very clear picture of what IV does to the trade.
Sigh! It's all about vol at the end of the day. If I only knew the secret to predicting volIt can be a good strategy when IV is typically fairly low after the market has been travelling up for some time and is likely to spike up a bit should the market fall.
I re-read Cottle's chapter on the greeks (in particular, vega) and had a much better understanding this time. He describes back months as more of a "vega play", whereas front months are more of "theta vs gamma play".
Sigh! It's all about vol at the end of the day. If I only knew the secret to predicting vol. Good to know of some predictable vol patterns like the one you described above. I think that it would be useful to start a thread on common vol patterns.
Quick question here guy's,
Does anyone juggle flys to expiry or is it a lost cause.
Say it's sitting right on centre strike today with 4 working days to go, positive theta is kicking along, is it worth experimenting?
I've experienced one occasion where I tried closing the short and leaving the worthless long as a lottery ticket. I found that my order to close the short was not being filled. I then changed my order form closing a short to closing a vertical (ie. both my WOTM long and short legs) and it was filled with a much more favourable price.If the longs have practically no value, you could consider only closing the shorts and leave the almost worthless longs as lottery tickets going into expiry.
I must keep that in mind. Unfortunately, I sold a wing earlier todayAnd Fridays - often MMs wind volatility down by Friday afternoon - can sometimes be a good time to do any buying.
Hi all,
I've experienced one occasion where I tried closing the short and leaving the worthless long as a lottery ticket. I found that my order to close the short was not being filled. I then changed my order form closing a short to closing a vertical (ie. both my WOTM long and short legs) and it was filled with a much more favourable price.
Cottle does say that MMs prefer "flat" trades. I presume by "flat", he means a short paired with a long, as it is limited risk. I suspect that was why I had a better fill when closing a vertical instead of an outright short.
Personally, I was happy with that trade because the lottery tickets were just that ... a long shot. It was not my intention to purchase this wager. It was more of a wager by default. I was happier to have more money in the bank than having a punt with long shot bet.
I must keep that in mind. Unfortunately, I sold a wing earlier todaywithout the benefit of your tip.
Does anyone juggle flys to expiry or is it a lost cause.
Say it's sitting right on centre strike today with 4 working days to go, positive theta is kicking along, is it worth experimenting?
Not quite 1 adjustment. I have made multiple adjustments prior to today's > 2 sigma downward move in XJO. I had suffered some small losses from over adjustments in the last fortnight. I also locked in some losses from the previous dip in XJO at the end of Oct. Today's daily move was the largest for a long time (last five months according to The Age). Basically, I've just managed to get my IC profitable again when today's events wiped out my gains.1 adjustment locked in a loss?
Thanks for your suggestion Cutz. Not quite sure about the outlook. Read some reports that the Dubai situation is a storm in a tea cup. I guess everyone takes their lead from the US. So, we'll have to see how US closes the week. The SPI has improved slightly as I type this.Of course this all depends on what happens overnight and you outlook on the index ...
Hi Mazza, I notice that you use the term offset, which I am not too clear on. By offset, am I correct to assume that this means taking some profit off your position and reducing your risk? Eg. harvesting an embedded fly from a pregnant butterfly?Depending on how much unrealized profit is available to be booked, it may be more prudent to simply offset the position.
Hear, hear. That, I now finally understand.vega &/or gamma risk can often overpower theta - which is why I prefer to trade with a bias in vol &/or direction. Nothing more frustrating than seeing a position accumulate theta gains, only to be negated by v/g on any particular day.
After thinking about what Mazza and Cutz said, it would seem that some form of back month wing (eg. Cutz's backspread suggestion) is the way to go, when handling sharp price falls and sharp IV increases. Especially after a fall in in recent IV.
For a start, additional wings should improve my r:r ratio ie. taming gamma. Back month wings on the put side of my IC acts as a natural defence against a sharp price fall/sharp IV rise combo. Perhaps this is what Grinder refers to as "built-in protection"?
I'm not sure about a back month wing on the call side of my IC. Price rises tend to be accompanied by a fall in IV and therefore a back month call wing might not be such a good idea. I will need to play with Hoadley to have a feel for this, and to see where the tradeoffs are. I'm sure theta will suffer to some degree. Hopefully not too much.
Thanks guys for your ideas.
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