To: Doug R who wrote (31234 ) 7/24/1999 11:45:00 AM From: wmwmw Read Replies (1) | Respond to of 79230
Any stocks that run too high too fast from its base is most likely to fall and give up part of its run up. I myself have done a lot of shorting. During a long period before March of this year, shorting on fast run-up stocks had above 90% probability of being correct. The point is at what level one can achieve best risk-reward ratio. Many traders know those fast run-up stocks would eventually fall, the point is what is the upside risk that those stocks may run before they fall. This is critical to shorting. Your model give a specific level that if violated, the stock will most likely fall to some level that also specified. And by experience it had 99% probability to be correct,(I would test this later)but your recommended actions are very conservative considering its extremely high probability. I would ( and I did) definitely short in this situation. But I would discuss the most important thing, that is, what is a level that invalidate your model? For example, if the level that QCOM cross IL is $152, what situation let you consider your model to fail in this specific case? What about its going above $160? Or breaking last high of $167? Or we just need to wait 8-10 weeks? Suppose I short after it cross $152 at $155, then it continue going up, as a trader I have two choices: wait if I firmly believe the model; cover to cut loss if I think the model may fail in this specific situation. I think there is a level, if the stock goes above this, it has higher probability to go much higher, and most traders would cover at that level. For example, $167 may be an appropriate level to cover and admit that the model has failed. Since we all know that the stock would eventually fall, but it may first reach $200 before fall back to $100, therefore as a shorter I may lose before I win, in this situation, even if the stock finally fall to $100, the usefulness of the model is still doubtful since few traders dare to stand short when the stock break $167. (I think the general level may be within 10%-15% of the total run-up). If you give this level, I can use it to test a lot of stocks in my memery. That is, if a stock cross IL but doesn't cross that level before its fall, I would consider your model valid, otherwise invalid. You already gave many stocks the validate your model. Maybe there are others that don't.