Kudos to MMs

Discussion in 'Chit Chat' started by nitro, Oct 23, 2008.

  1. nitro

    nitro

    Sort of, you can also just use the VIX level and historical frequencies at those levels. VIX is high for a reason, and should be respected right?
     
    #3431     Aug 16, 2011
  2. I never understood adding when you're wrong, unless it's in a delimited product (yield-curve, cracks, etc). My guess is that 99% of traders on this board who average are paper-trading.

    Nitro, does your long ES position exist in this dimension?
     
    #3432     Aug 16, 2011
  3. VIX is shit representation of implied vol. Why use an artifice... why not use ATM vols or stat vol?
     
    #3433     Aug 16, 2011
  4. nitro

    nitro

    You could do that too.
     
    #3434     Aug 16, 2011
  5. What's your average on your ES long?
     
    #3435     Aug 16, 2011
  6. nitro

    nitro

    I don't have an average. I am long ES only in the morning because I can't use options then. It was sold and I got into the the 55 delta SPY option at the time.

    Perhaps you mean my position. In SPX terms using 55 delta options each time, I am long at 1172 ish, 1192 ish, and 1201 ish. Then I also added at 1185 ish (the long ES) and various VIX put strikes, the initial one being the 32.5 strike when SPX was at 1172.
     
    #3436     Aug 16, 2011
  7. nitro

    nitro

    This is what the human trader brain is trying to do, explained in mathematical terms:

    http://en.wikipedia.org/wiki/Hessian_matrix

    In fact, it is probably at least a 32 dimensional Hessian Tensor (Vector-valued functions sections - I am guessing this number because my model is about 15 dimensional and doesn't come close to capturing all the dynamics). No wonder people want to stay at the High Frequency, where this Tensor is probably only 3 dimensional (still hard.) The longer your time frame, the Tensor dimension probably increases exponentially.

    I have said this so many times on this thread that I am repeating myself.
     
    #3437     Aug 16, 2011
  8. I wouldn't use tensors to model human frailty.
     
    #3438     Aug 16, 2011
  9. nitro

    nitro

    You are misunderstanding or I am not being clear. You can come up with whatever function you like to model human frailty. Call that f(x), where x is vector valued. What goes in the Hessian is the partial derivatives of this function with respect to every other dimension in the matrix.

    Variance/Covariance matrices do similar things...
     
    #3439     Aug 16, 2011
  10. paging NLTRO...........:p
     
    #3440     Aug 16, 2011