New Delhi, April 3 -- As global markets remain rattled by war-driven volatility, rising crude oil prices and uncertainty over interest rates, Zerodha co-founder Nithin Kamath has once again returned to a theme he has pushed for years: for most investors, diversification remains the most dependable way to generate long-term returns and reduce risk.

In a post shared on social media platform X on Thursday, April 2, Kamath used what looked like a straightforward portfolio performance chart from Zerodha's Console platform to make a much broader point - that both investing and the tools investors rely on are far more complex than they appear on the surface.

The chart, he suggested, may seem ordinary to users, but building such investor-facing...