Hi Michael,
Let me digest what you said about Vega.
In the mean time, let us look at a trade on GS.
After GS gapped down due to SEC suit, it now hovers around 157.
It continues to be weak.
May I suggest -
GS May BWB /1 150c/-2 155c/1 165c/ for $1.20credit.
Delta= -12.44; Gamma=-0.38; Theta= 1.78; Vega= -2.97
Of course, I open to suggestion.
Thank you again for sharing.
Best regards,
Sam
--- In OptionClub@yahoogro
>
>
>
> -----Original Message-----
> From: speedsam21
> <...>
> [ Questions ] -
> IV/Vega - This is one area I am still struggling. Delta, Theta, Gamma -
> these are 'visible' in my radar, but Vega is, often times, neglected as part
> of my check list in trade adjustment.
>
> MC - I don't know if it will help make it a little more concrete but: vega =
> theta. Both of these Greeks are different ways of describing the exact same
> thing, namely, extrinsic premium. theta decreases extrinsic premium in sort
> of a predictable fashion over time. Vega is just a way of saying that theta
> (extrinsic premium) is behaving erratically. Vega acts like a time machine
> in which theta can go backwards, stay frozen in time or accelerate. If you
> understand and focus on extrinsic premium levels it won't matter whether you
> call it vega or theta or "bruce". You just have to understand what it is
> doing and somehow deduce reasons why it is acting the way it is and then bet
> accordingly since, no matter what, at expiration there will be no extrinsic
> premium remaining.
>
> I can understand your criteria of 1.5SD in change in price in underlying
> that warrants an adjustment.
> What is your criteria with regards to changes in volatility?
>
> How do you keep volatility in focus in your trade adjustment?
> As IV changes, what kind of values that nudge you to trade short/long Vega?
> Can you give an example in your trade adjustment that will help us
> understand your thinking process in managing Vega?
> Especially when it comes a multi-strike position after you have executed a
> series of adjustments.
>
> MC - changing volatility basically signals to me whether or not I should be
> long premium or short premium. by "premium" I mean owning more long units or
> long options than short options. The "adjustment" is often (painfully)
> obvious. If I am net short premium and volatility rises, I lose money so I
> am forced to buy more options. Conversely if I am long too many units in a
> declining volatility environment I will lose and will thus have to sell some
> of that inventory. I look at the typical or conventional adjustment move
> that we discuss here often (e.g. at the 1.5 SD level) as "managing delta
> risk". how I make the adjustment is contingent on what's happening to
> volatility. So for example let's say I am long a 75 strike put on abcde
> stock which is trading at 78 with initial implied volatility of 35%. If a
> day or so later abcde rises to 81 (about a 1.5SD move) I now am short fewer
> deltas than I originally established by buying the put. If I want to
> maintain the same negative deltas for whatever reason I need to make an
> adjustment to my 75 put. But before I decide how I want to adjust I look at
> what is happening to implied volatility. Let's say that IV has dropped to
> 30%. I now know that I not only need to accumulate some short deltas (again
> underscoring that in this example it's only because I want to stay short
> deltas at this juncture) but I should be doing it by selling premium. so
> perhaps my chosen strategy would be to sell the 80/85 call spread which
> would get me my desired short deltas but also take into account the
> declining volatility environment. With a multi-legged trade, the same
> principles - if you can call them that - apply but you just need to
> understand the relationships between all the legs and the net values of
> delta and vega locally(i.e. near the atm underlying price).
>
>
>
> Paper Trade? -
> If your time allows, could you help us with a paper trade to illustrate your
> point.
> Perhaps, using your favorite underlying, besides GOOG - :)
> GS?
>
>
> MC- help me out by suggesting a trade in GS (please use May series so this
> doesn't go on forever).
>
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