Interestingly, the better way to stay informed about your investments is to simply not look.  Statistically, buy and hold investors that don't follow the market daily have higher rates of return than those that monitor the markets daily.  Buy-and-holders are more likely to make conscious long term decisions and not react to buying and selling on the whims of the market.  Those that look daily are likely to do the opposite.

So if you want higher RoR, investigate and buy something if it's a deal, but then stop looking at it.  Daily ups and downs are quite meaningless.