Indices and Investment Strategies · ETFs

An index is a set of decisions written as rules. Eligibility, weighting and maintenance can matter more than the familiar name on an ETF.

Define the investment universe

Read which countries, company sizes and security types qualify. Global can mean developed markets only or include emerging markets. A broad market label may omit small companies. Eligibility rules can also include liquidity, profitability or listing history. Two indices described with similar words can own materially different portfolios.

Follow the selection and maintenance rules

Identify how securities enter and leave, when reviews occur and how corporate actions are handled. Reconstitution changes membership. Rebalancing adjusts weights. They can happen together but are different processes. Turnover can create trading costs inside the fund, especially when many investors follow the same published changes.

Check the return definition

A price index excludes distributions. A total return index assumes specified reinvestment, and a net total return series applies stated withholding assumptions. These are not interchangeable benchmarks. Record the currency and observation dates as well. Comparing an ETF total return to a price only index can make ordinary income look like superior management.

Create a benchmark comparison

Suppose two global funds hold 1,000 and 3,000 securities. The larger count alone does not establish better diversification. One may include emerging markets and small companies, while the other deliberately excludes them. Write down the countries and company sizes you want, then see which benchmark matches. Choose the exposure consciously rather than allowing the fund name to make the allocation decision.

Try it yourself

A fund returned 8% including distributions while its price index rose 6%. Can you conclude that the manager added 2% through skill?

Show the worked answer

No. Compare the fund with the appropriate total return benchmark in the same currency and period before assessing the gap.

Further reading

Educational material, not a recommendation to transact. All numerical examples are hypothetical and exclude costs unless stated. Actual terms, eligibility, tax treatment and broker procedures depend on the security and jurisdiction.

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