A frequent mistake among retail investors is the assumption that holding ten or twelve different mutual fund schemes guarantees superior diversification. In reality, accumulating multiple funds across large-cap, flexi-cap, or multi-cap categories often creates an illusion of diversification. Because fund managers frequently draw from the same underlying universe of high-conviction companies, an investor may unknowingly hold hefty, duplicated exposure to the exact same stocks—such as Reliance Industries, HDFC Bank, ICICI Bank, or Infosys—across three or four separate schemes.
This duplication is known as portfolio overlap. When two or more funds share substantial common holdings, you pay recurring expense ratios on duplicate stock baskets without reducing portfolio risk or improving Sharpe ratios. To maintain clean asset allocation and prevent unwanted stock concentration, analyzing overlap before adding a new scheme is essential.
15 Essential Tools & Calculators to Check Portfolio Overlap:
1. InvestYadnya Portfolio Overlap Tool:
A clean, research-driven tool that allows investors to compare equity mutual funds side-by-side, displaying common stocks alongside the percentage weight of overlapping holdings.