I have a doubt

If the relative volume of an stock in the pre-market is very high and the stock is of great capitalization, is this easier for intraday trading?

 

The scientific method - Observation, Question, Hypothesis Experiment/Backtesting, Conclusion/Statistics

You have made it part way in the scientific method, you'll have to go all the way for the statistics or answer for the first part of your question. I doubt anyone is going to test out your ideas for you.

Knowing in advance that there is a higher chance of greater intraday volatility or range on certain days may or may not help you with your second question of whether the information makes trading it easier for you.

 

Is there someone who has experience?

 

unlikely - institutions tend to put their best traders in the busy names.... so you will have weaker opponents in the thinner stocks.

 

But small capitalization actions are more manipulable, right? A large capitalization action is not easier for the day to go in one direction?

 

If the big institutions put the best operators in large companies, it must be because it is easier to make money there, right?

 

What makes a stock easier to trade?

Abnormal volume with price rising signifies demand that may or may not continue.

 

easy to get in or out yes.....but easier to make profit? that depends on skill

 

Volatility ... up OR down.

 

%%
Yes;
+even much more so in reg hours[based off 50 day moving average on volume]