Markets get reported in percentages. Your net worth is in rupees. A 1.2% fall in the Nifty tells you nothing about your own position until you know how much of your money is in equity, and that gap between the headline and your balance is where most anxiety about markets comes from.
This works out the rupee number.
Portfolio Change = Σ (Holding Value × That Asset's Move %)
Each asset class moves independently. Equity follows the indices, gold follows the international price and the rupee, debt funds barely move day to day, and your bank balance and EPF do not move at all. Sum the rupee change for each and you have your actual day.
Your net worth is ₹80 lakh, made up of ₹30 lakh in equity funds, ₹10 lakh in gold, ₹15 lakh in debt and FDs, and ₹25 lakh of EPF and cash. The Nifty falls 1.5% and gold rises 0.8%.
Equity loses about ₹45,000, gold gains about ₹8,000, everything else is flat. Your net worth is down roughly ₹37,000, which is 0.46% of your total. The headline said the market fell 1.5%. Your position moved by less than a third of that.
That ratio is the useful output. It tells you how sensitive your wealth actually is to a market you have no control over.
Two reasons to look at all. It calibrates you, because most people either wildly overestimate or wildly underestimate how exposed they are. And it makes asset allocation concrete in a way percentages never do.
Then two reasons to stop looking. Daily moves are noise, and over a multi-decade horizon almost none of them matter. And watching the number closely reliably produces the exact behaviour that damages returns, which is selling after a fall and buying after a rise.
Research on investor behaviour consistently finds that the gap between what funds return and what investors in those funds actually earn comes almost entirely from badly timed entries and exits, not from picking the wrong fund.
Annual growth, split into two parts. How much of your net worth increase came from money you added, and how much came from returns. Someone whose net worth grew ₹12 lakh on ₹10 lakh of savings had a modest market year and an excellent savings year. Someone whose net worth grew ₹12 lakh on ₹2 lakh of savings had the opposite.
Only one of those two levers is under your control, and in the first fifteen years of building wealth it is by far the larger one.
FOLO Tip: Seeing the daily swing once is useful. Seeing it every day is not. FOLO shows the move and then puts it back in the context of your longer arc.
