Multiple investment accounts can make a portfolio look more diversified than it really is. Learn how to consolidate holdings in Excel, uncover hidden overlap and concentration, measure true asset allocation and manage every account as one structured investment portfolio.

Many investors believe they own a diversified portfolio because they hold multiple ETFs. In reality, they often own the same companies repeatedly through overlapping funds. This hidden duplication can increase concentration risk, distort allocation decisions, and create a false sense of diversification. In this guide, we show how to identify ETF overlap, measure its impact on your portfolio, and understand why Structured Compounders actively monitor overlap while Conservative