Trading Lessons/Insights From Coin Flipping

Discussion in 'Risk Management' started by tradingjournals, Aug 31, 2010.

  1. This is what you said before:

    and this

    and this


    There is an obvious conclusion Mike. You are playing with the minds of the few that have fallen into the trap of listening to a loser like you.

    First you say you are doing a thought experiment but then someone secretly tells you not to reveal the answers. If there are stupid people here that believe you, it is their problem.
     
    #281     Sep 21, 2010
  2. Craig66

    Craig66

    Do you mean normally distributed P/L outcomes?
     
    #282     Sep 21, 2010
  3. Craig66

    Craig66

    Here are some of the equity curves from my testing on the SPY.
    This is the first condition, as expected, not very good.
     
    #283     Sep 21, 2010
  4. Craig66

    Craig66

    Next we reverse the condition.
     
    #284     Sep 21, 2010
  5. Craig66

    Craig66

    Now we add in the random...doing this simply seems to 'randomize' the outcomes, though I can only post one run generally they range from about break even to better than the last one. So I'm not sure the random part does anything apart from being random. One does notice that most of the profit (random or otherwise) comes in times of higher volatility, so some type of volatility gating may help. Still not quite sure where this is all going...
     
    #285     Sep 21, 2010
  6. Craig66

    Craig66

    ...or maybe it doesn't help, here is condition2 with no random with the extra clause that VIX > 25. I can't rule out a f**k up in my coding.
     
    #286     Sep 21, 2010
  7. Craig66,
    Curious about this result. If the condition is reversed, aka go short rather than long, the equity curve should just be a mirror image about the 0 line, or so I would think.

    Let's keep testing!

    masterjaz
     
    #287     Sep 22, 2010
  8. Craig66

    Craig66

    If you compare the actual trades, they are inverse, it's just commission that is skewing it. (maybe some of the slip/com assumptions are a little heavy handed).
     
    #288     Sep 22, 2010
  9. Craig66

    Craig66

    Ok, I think I get it now, this system is a reformulation of the Mike posed in the 'Developing a system on random data' thread, the random part of the system is the normal variable in the exercise. I'm guessing this is some variation on the 'Monty Hall' problem. Am I heading in the right direction?
     
    #289     Sep 22, 2010
  10. No, it has nothing to do with the Monty hall problem. In that problem you know the outcome of your second selection and you are asked whether you want to reconsider your original selection. In trading, this cannot be done. You cannot go back and change the original selection.
     
    #290     Sep 22, 2010