One of the first rules of every investor to learns is diversify. Don't put all your eggs into one basket is financial scripture. We are taught that spreading our capital across different stocks, sectors and asset classes is the only way to protect ourselves from market downturns.
So, in the pursuit of safety many investors start collecting assets like trading cards. They buy a dozen individual stocks subscribe to four different mutual funds purchase three themed ETFs and add some crypto or commodities for good measure.
But there is a point...