professor_frink
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- 16 February 2006
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Re: Trading / Daytrading for a living
The problem with that chemist, is I know any indicator I use is not trustworthy, most won't even get it right 50% of the time, but they will catch the big move when it comes. They will also catch the tops of smaller moves. That's why appropriately placed stop losses and position sizing(staking plans) are essential. You need to stay in the game long enough for your methods expectancy to play out.
Sorry I must have misunderstood you in regards to expectancy. When wayne posted the expectancy equation up before, you said the equation meant nothing. Looking back on that post now, after the recent posts you've made I can see why you said that and I agree. No position sizing method can turn negative expectancy into a positive one, but a poor position sizing method combined with not following stop loss signals generated by the system can turn positive expectancy into a failure.
Thanks for the links. I'll check em out today
chemist said:I agree. Yesterday your indicator said sell. What does it say today? If it now says buy (or hold), then closing or reversing your position is not being stopped out, it's a (rational) change of mind. OTOH if still says sell why close the position just because yesterday's trade has so far failed to show a profit? if we're trading our indicator we trust it. One random wrong day shouldn't change our minds.
The problem with that chemist, is I know any indicator I use is not trustworthy, most won't even get it right 50% of the time, but they will catch the big move when it comes. They will also catch the tops of smaller moves. That's why appropriately placed stop losses and position sizing(staking plans) are essential. You need to stay in the game long enough for your methods expectancy to play out.
Sorry I must have misunderstood you in regards to expectancy. When wayne posted the expectancy equation up before, you said the equation meant nothing. Looking back on that post now, after the recent posts you've made I can see why you said that and I agree. No position sizing method can turn negative expectancy into a positive one, but a poor position sizing method combined with not following stop loss signals generated by the system can turn positive expectancy into a failure.
Thanks for the links. I'll check em out today