How index movements are decided ?
Index represents a basket of stocks, like - NIFTY 50 has some 50 stocks under its belt. Is the price of NIFTY being decided by the average of all its 50 stocks and the weight they contribute to the index ? Or by some other means ??
Why I am trying to understand this is - When we see a good trend day in NIFTY 50, nearly 90% of its 50 stocks, move in the same direction giving a one sided advance decline ratio. But on other days let say If 28 stocks are trying to go up and 22 are going down, to compensate them, NIFTY might stay range bound. So what are the probability of getting 90% of stocks moving in same direction in a month so that we can catch a good trend in NIFTY to trade intraday ?
So does it mean, trading intraday on high beta stocks has a better probability of catching good intraday swings than trading the index ? Yesterday I got this question from one of my friend. So decided to start this for discussion. Experienced traders, Please give your valuable opinions on this,