Here is an observation from today's sp trade that I see more frequently than you might think. The trades are based on standard deviations from recent trading as you may understand from the website material. Today's levels of buying 792 with an 18 point stop are derived from recent volatility. The market declined 17.75 pts below the entry and then topped out 16 points above the entry. Pretty symmetrical and often an indication I was early. At the point it would have rallied 18 points from entry, often times I recommend to move stops to break even. We just went back to the entry point. I wrote a brief article related to this that you can find on the link below and the website.
http://sites.google.com/site/stopsandoptions/market-c/stops-vs--options
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