ETFs vs. Mutual Funds: What Changes When They Invest in the Same Assets?
ETFs are funds too, but order execution, pricing, and costs differ. Compare what actually changes in your account when two funds target the same index.
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ETFs and Index Investing
Original, source-based guides to etfs and index investing for investors.
20 articles · Original research guides with primary sources and worked examples
Topics · ETFs and Index Investing
What Is ETF NAV, and Does a Lower NAV Mean a Cheaper Investment?
An ETF's NAV per share is assets minus liabilities divided by shares outstanding. Learn to distinguish fund growth from inflows and returns earned by existing investors.
Read article →ETF Premiums and Discounts: Three Checks Before You Buy
An ETF's premium or discount measures the gap between its market price and NAV. Check the sign and valuation time, then assess how a narrowing gap affects your trading return.
Read article →ETF Tracking Error vs. Tracking Difference: How to Read the Return Gap
An ETF's cumulative return gap versus its index and the volatility of that gap are different measures. Learn why low tracking error can coexist with a persistent cost-related shortfall.
Read article →The Real ETF Investment Costs You Miss by Comparing Fees Alone
ETF costs include more than advertised fees: fund expenses and the costs of buying and selling also matter. Account for holding periods and trading frequency without double-counting tracking difference.
Read article →Can You Trade a Low-Volume ETF? How to Check Quotes and Underlying Assets
An ETF's displayed volume does not tell the whole liquidity story. Assess spreads, order-book depth, and underlying-market conditions for the size of your order.
Read article →What Does a Synthetic ETF Hold, and Where Does Counterparty Risk Arise?
Synthetic ETFs use swaps to receive the return of a target index. Understand how actual holdings differ from investment exposure and how to assess collateral and counterparties.
Read article →Why a Physical ETF Does Not Have to Hold Every Index Constituent
Representative sampling is a form of physical replication that uses selected assets to capture an index's characteristics. Look beyond holdings counts to exposures and actual tracking results.
Read article →Why Can a Leveraged ETF Lose Money When Its Index Returns to Its Starting Point?
An ETF targeting twice the daily return compounds against a changing asset base. Compare choppy and steadily rising markets to understand why longer-term returns differ from a simple multiple.
Read article →Does Holding an Inverse ETF Guarantee the Opposite of a Bear Market's Return?
Inverse ETFs generally target the opposite of a single day's return. Learn why an index's starting and ending levels do not determine your result, and where portfolio hedging can fall short.
Read article →Does a Currency-Hedged ETF Eliminate All Won–Dollar Exchange-Rate Risk?
Currency hedging depends on the currency against which risk is reduced. Distinguish trading and asset currencies, then check partial hedging, contract costs, and remaining exposure.
Read article →Distributing vs. Accumulating ETFs: Cash Payments and Total Return
Distributing ETFs pay cash out, while accumulating ETFs reinvest it internally. Compare performance with ex-distribution adjustments and repurchase costs, and separate index assumptions from payout policy.
Read article →Dividend ETFs: Which Stock Selection Rules Matter Beyond Yield?
High current dividend yield and a long record of dividend growth are different investment criteria. Read dividend ETF inclusion, removal, and weighting rules to understand the portfolio behind its payouts.
Read article →Where Do Covered Call ETF Distributions Come From, and What Do Investors Give Up?
Covered call ETFs combine stock exposure with selling call options. Expiration payoff examples explain option premiums, limited upside participation, and the downside risk that remains.
Read article →How to Estimate a Bond ETF's Response to Interest Rates Using Duration
Duration is a starting point for understanding a bond ETF's rate sensitivity. Estimate the price impact of a 0.5-percentage-point rate move and distinguish maturity, credit spreads, and income.
Read article →Why Can a Commodity ETF's Return Differ Even When Spot Prices Rise?
Futures-based commodity ETFs replace contracts as expiration approaches. Distinguish contango, backwardation, convergence, and collateral income to understand returns that differ from spot prices.
Read article →Why Buying Several Thematic ETFs May Not Diversify Your Portfolio
ETFs with different theme names can hold the same stocks and industry risks. Calculate top-holding weights and overlapping exposures, then check how much revenue actually relates to the theme.
Read article →Why Equal-Weight and Market-Cap-Weighted ETFs Perform Differently with the Same Stocks
Equal weighting and market-cap weighting give companies different influence even with identical holdings. Compare weight drift, large-cap concentration, and trading costs through a numerical example.
Read article →ETF Index Changes: How to Tell a Benchmark Switch from Routine Constituent Turnover
Scheduled constituent changes, methodology revisions, and benchmark replacements are different events. Compare the rules before and after a change and assess continuity in historical performance.
Read article →What to Read in an ETF Prospectus Before the Performance Table
Read an ETF prospectus by connecting its objective, implementation, risks, and costs. Confirm the document version and share class, then build a one-page note on the product's structure.
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