01Which rules determine the holdings?
Read eligibility, selection, weighting, and review methods. An ETF structure does not tell you whether a strategy is active or index-based. A familiar theme does not tell you which securities are included. Summarize the method in plain language and name important exposures that the fund does not provide.
02How much overlap is already present?
Multiply each holding’s fund weight by the portfolio weight assigned to that fund, then add shared exposures across funds. Even a small look-through exercise can reveal obvious duplication. Counting tickers or account names is not the same as examining the companies, sectors, and markets that actually influence the result.
03What does ownership cost?
Translate the expense ratio into dollars and examine the other applicable transaction costs. Compare like-for-like strategies rather than ranking by one percentage alone. The article also distinguishes bid-ask spreads, market prices, and net asset values so that the convenience of trading does not obscure the economics of entering and leaving a position.