ETF Overlap Analyzer
Compare two ETFs to see which positions they share and how much those holdings weigh in each fund.
Why overlap can differ in each direction
Suppose the shared stocks represent 30% of fund A and 60% of fund B. The list of shared names is identical, but the weights tell you that fund B is more exposed to those names. A similar question arises when adding a Nasdaq-100 fund such as QQQ to an S&P 500 fund such as VOO. Start by checking the companies that are already large positions in both.
FinClaro uses index-composition estimates for reviewed pairs. Where it only has major holdings, the percentage describes the covered portion of each fund. Two funds can share few securities and still be exposed to the same sector or market. Use Portfolio X-Ray to see how overlap translates into the weights of your own portfolio.