Kelly Calculator

Discussion in 'Strategy Building' started by 15rms, Sep 17, 2013.

  1. 15rms

    15rms

    Does anybody here have a good web site that has a Kelly calculator? I am looking for a web site that I can just fill in the percent winning trades and the average win average loss.

    Thanks
     
  2. drcha

    drcha

    I have not seen one or looked for one, but...why do you need one? By the time you calculate the % return for wins and losses, you are most of the way there:

    k = (((1+r)*p)-1)/r

    where r = mean % return on wins/mean % return on losses

    and p = probability of a win

    Assuming you risk the same amount or % on each trade
     
  3. 15rms

    15rms

    Ok Thank You.
     
  4. drcha

    drcha

    Nice description of this calculation and others like it in McMillan on Options by Larry McMillan
     
  5. bustermu

    bustermu

    15rms,

    Once you have reduced the information to, "percent winning trades and the average win average loss", only, the Kelly Ratio can no longer be determined.

    Please see:

    http://www.elitetrader.com/vb/showthread.php?s=&postid=3028937#post3028937

    Thanks,
    Jim Murphy