New Delhi, April 1 -- The latest data shared by Zerodha's Nithin Kamath highlights a structural flaw in the 'equity-only' SIP cult.

"No one can predict which asset class will do well. For 99% of people, the best thing to do is diversify and stay invested during the good times and the bad," says Kamath.

It sounds like the kind of advice investors have heard for years-sensible, familiar, and easy to ignore. Yet the data he shared alongside that statement makes it harder to dismiss. Because it shows something most investors don't like to confront: even disciplined investing can go wrong if the portfolio itself is poorly constructed.

And right now, that is exactly what's happening.

Systematic Investment Plans (SIPs) have become the defaul...