After a while of watching the performance of major indexes (SP500, NASDAQ, DIA) you, like me, might have noticed a trend in their daily performance. I noticed the SP500 usually falls in the middle of the daily return of the NASDAQ and DIA. Ex: their performance is either DIA>SP500>NASDAQ or DIA But how often does this happen exactly? Well I have too much free time and access to a computer so heres a graph showing that. On the plot, “% normal spread” means % of the trading days in a year that my above observation applies. I also added the corresponding yearly returns of the SP500. I don't think it really shows anything, just an interesting metric with a non-random trend.
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