A sophisticated trap

There’s something deeply ironic about diversification. It’s the most intuitive investing concept—don’t put all your eggs in one basket—yet one most investors get spectacularly wrong. Our cover story of Mutual Fund Insight, September edition, tackles this paradox head-on and reveals what most investors miss. The basic idea is simple: spread risk by owning different things that don’t all move in the same direction. Yet fund sales pitches quickly morph this into a bewildering array of products—equity, debt, hybrid, sectoral, thematic, international, even funds of funds. Before long, you “own” 15 mutual funds and think you’ve diversified. You haven’t. More often, you’ve achieved what Peter Lynch called “diworsification”—diluting returns without real risk reduction. It’s the investment equivalent of eating everything and calling it a balanced and healthy meal. True diversification might need just three to five carefully chosen fund