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Calculate fund overlap easily with our free fund overlap calculator. Check portfolio duplication, compare mutual funds, and improve diversification instantly.
A fund overlap calculator helps you understand how much two or more funds share the same stocks. Many investors buy multiple mutual funds thinking they are diversifying. But in reality, those funds may hold the same companies. This creates duplication and reduces true diversification.
Our fund overlap calculator is designed to solve this problem. It allows you to quickly calculate the overlap percentage between funds and see how similar your investments really are. With this tool, you can make smarter decisions and build a better diversified portfolio.
Fund overlap means the percentage of common stocks between two or more funds. If two funds invest in many of the same companies, their overlap is high. If they invest in different companies, the overlap is low.
A high overlap means you are not truly diversified. A low overlap means your investments are spread across different assets, which reduces risk.
The most commonly used fund overlap formula is:
Overlap % = (Common Holdings ÷ Minimum Holdings of the Two Funds) × 100
This formula shows how much of the smaller fund is duplicated in the other fund.
Another advanced formula is:
Overlap % = (2 × Common Holdings ÷ (Holdings of Fund A + Holdings of Fund B)) × 100
This formula gives a more balanced comparison between both funds.
Using the fund overlap calculator is very simple and user-friendly.
The calculator will instantly show the overlap percentage for each pair, the average overlap, and your diversification score.
Let’s understand with a simple example.
Suppose you have two funds.
Fund A has 10 stocks.
Fund B has 8 stocks.
Both funds share 6 common stocks.
Using the main formula:
Overlap % = (6 ÷ 8) × 100
Overlap % = 75%
This means 75% of Fund B is duplicated in Fund A. This is a very high overlap and indicates poor diversification.
Using the alternative formula:
Overlap % = (2 × 6 ÷ (10 + 8)) × 100
Overlap % = (12 ÷ 18) × 100
Overlap % = 66.67%
Both results show that the funds are highly similar.
Understanding fund overlap is very important for investors. It helps you avoid investing in the same stocks through different funds. It also improves your portfolio diversification and reduces unnecessary risk.
By checking overlap regularly, you can rebalance your portfolio and choose funds that complement each other instead of duplicating holdings.
A fund overlap calculator is a powerful tool for every investor. It gives clear insights into your portfolio and helps you avoid hidden duplication. If your overlap is too high, it may be time to adjust your investments.
Our calculator makes this process simple, fast, and accurate. Use it regularly to maintain a well-balanced and diversified portfolio.
A fund overlap below 30% is considered good because it shows strong diversification.
Yes, high overlap means your funds invest in the same stocks, which increases risk and reduces diversification benefits.
Yes, you can compare multiple funds. The calculator will show pairwise overlap and average overlap.
Diversification score is calculated as 100 minus the average overlap. A higher score means better diversification.
Mutual funds often invest in popular large companies. This leads to overlap between funds, especially in similar categories.