Mutual Fund Insights — Fund of the Decade, Rating Drift
Insights is Dhanik's research corner — analyses that need more than a table to tell their story. Two studies live here today: Fund of the Decade, which finds the best-performing scheme in each major category over the full period since 2015, and Star Rating Drift, which follows how fund ratings migrate over time — how often a five-star fund is still five-star a few years later.
Why a decade, not a year
Any fund can top a one-year chart; very few lead across ten years spanning crashes, recoveries and style rotations. A decade of history captures at least one full market cycle, which is why long-window analysis says more about a process than about luck. It also exposes survivorship: funds that merged or faded along the way silently drop off short-term leaderboards. Compare any two contenders side by side in Compare, or see how today's leaders rank in the Best Funds lists.
What rating drift teaches
Ratings are snapshots, not fixtures. Our drift analysis shows a meaningful share of top-rated funds slide toward the middle as performance mean-reverts — and some low-rated funds climb. The practical lesson: buy a process you understand, not a badge. Our own scoring blends rating, risk-adjusted return and cost — the weights are public on the methodology page — and even then we treat the score as a starting point for research in the screener, never a verdict. New to these concepts? The Learn section covers rolling returns, Sharpe ratios and more in plain English.
Frequently asked questions
How is Fund of the Decade chosen?
Mechanically: within each category we rank schemes on annualised return over the full window since 2015, using real NAV history, with no editorial picks and no sponsorship. Past performance does not guarantee future results.
What is star rating drift?
The tendency of a fund's rating to change over time as its relative performance shifts. Measuring drift tells you how much confidence a rating deserves on its own — generally, less than investors assume.
Are these analyses investment advice?
No. They are information generated from historical data. Mutual fund investments are subject to market risks; read all scheme-related documents carefully.