Ticiano, your question is hard to answer because of the vague amount of information in your post.
First I don't rely on signals, indicators or chart patterns very much. I use signals as a warning indicator, but I don't act on them. The trading decision is based on my perception of the market, what's going to happen over the next several days or weeks and what is happening with other similar equities. If I get a signal, or the chart looks good, I'll buy if the other variables look right to me. I have a group of market condition charts I look at to help me understand what is going on, but again I don't rely solely on them. I listen to cnbc during part of the day. I watch nightly business shows after the close. I read the Wall Street Journal everyday, and use a dozen other sources of info that factor into my buy decision.
If you are day trading, the time of the day will impact what a system does. Some day traders only trade in the last
half hour, some trade mid day and other like the open after the first five minutes. One indicator I got from John Clayburg uses the first five minutes of trading data with the next hours worth of trades to predict the direction of the price for the day as a whole. It's 75% or so accurate.
Based on the little info in your post, sure it's possible to have better results in the last half hour. Sometimes computer trading kicks in and sometimes it doesn't. Generally, you can see the volume swings when computer trading kicks in. It is possible to make money from that if you are grinding out day trades. You can also see volume swings and price adjusting when lunch time is over in NYC. Since I buy for a longer time horizon, I know which times of the day are likely get my orders filled at cheaper prices. I also know the specialist is closing out there book late in the day so I'm likely to get fills I wouldn't get earlier on thinly traded ETFs or closed
end funds. The price difference isn't huge but I always look for the best price. Sometimes that strategy works and sometimes it doesn't. I've been left partially filled at the end of the day, and the price move the next day wiped out any price advantage from the day before.
Volume is generally a good filter so it often improves results, but not all of the time.
Have fun!
Super
--- In equismetastock@ yahoogroups. com, Ticiano Rêgo <ticianorego@ ...> wrote:
>
> I am testing one trading system with Monte Carlo Simulation and I have found
> this:
>
>
> Test 01) Buy on the open if open <= ref(close,-1) . Explaining better: Buy
> the next day of the signal if it opens less or equal yesterday´s close.
>
> Test 02) Buy on the close.. On
the same bar of the signal.
>
>
> With test 01 TradeSim gave me EXCELENT results with its performace much
> better than Test 02.
>
> The problem is when I include a liquidity filter such as mov(c*v,22,s)
> > = *certain
> value* than Test 02 becomes better.
>
> The results shouldn´t remain the same ? Is it possible that considering
> these securities (the most liquid ones) professionals are deciding on the
> close ?
>
> Super, if it is possible I would like to know your opinion.
>
>
> Kind regards,
>
>
> Ticiano Rêgo
>