Buying a fund buys a proportional claim on whatever it holds. Until you have opened the holdings list, the name on the ticket tells you almost nothing about what you own.
9 min read · Level 2
Almost every conversation a new investor has about funds is a conversation about the box. Exchange-traded or open-ended, this platform or that one, accumulating or distributing - hours are spent on it, and the whole of it is secondary to a question most people never ask, which is what is inside. The wrapper decides how you transact and how tax reaches you, and those are real; they are also, for a holder buying a broad low-cost fund and keeping it for twenty years, worth a few basis points a year at most. The contents decide everything else. I would go further and say the industry benefits from the confusion: a debate about structure is a debate in which every product looks broadly similar and the buyer feels informed, whereas a debate about holdings would immediately reveal that two funds sold under the same theme are not remotely the same purchase. The discipline that follows is unglamorous. Before you compare two funds on anything at all, open both holdings files, add the ten largest weights in each, and see whether you are still comparing like with like. Most of the time you will find you were not, and the wrapper question will have answered itself by becoming unimportant.
Every other asset-class subject in this curriculum is about a thing. This one is about a container.
A fund is a pooled vehicle. Money from many holders is put into one portfolio, and each holder receives units representing a proportional claim on that portfolio. The fund itself owns nothing you could not own directly. It is a legal and administrative wrapper, and the assets inside it are the investment.
So the value of a unit is arithmetic rather than opinion. Take Fund A, the anchor used through this subject: a fund holding 500 listed companies.
Securities at market value 2,043.6m Cash and receivables 11.9m Less liabilities (accrued fees) -5.5m ---------------------------------------- Net assets 2,050.0m Units in issue 41.0m Net asset value per unit 50.00
Now look through the wrapper to what those 500 holdings actually are, by weight:
Largest holding 7.2% Ten largest holdings together 35.8% Smallest 250 holdings together 4.9%
Read those three lines again. A one per cent move in the single largest holding moves the fund by 0.072%. The same one per cent move across all 250 of the smallest holdings combined moves it by 0.049%. Half the portfolio, by count, matters less than one name in it. Nothing about that is visible from the fund's title.
There are two common wrappers and they differ in how you transact, not in what they can hold.
An open-ended mutual fund transacts with you directly. You send money and the fund issues new units; you redeem and the fund cancels them. There is one price a day, struck after the market closes, and your order is filled at the next one - which means you commit before you can see it.
An exchange-traded fund is listed. You buy from another investor through a broker, at whatever is quoted at that moment, for as long as the exchange is open. Units are created and cancelled in large blocks through a separate wholesale door: specialist firms hand the fund a basket of the underlying securities and receive a block of new units, or return units and receive the basket. That mechanism is what keeps the quoted price near the value of the holdings, and lesson three is about how well it does so.
One more thing hides inside a single fund name. The same portfolio is often sold as several share classes with different fees, different minimum investments and different treatment of income. Same assets, different terms, one name.
Because "I own an ETF" carries roughly as much information as "I own a box."
The questions that decide whether a holding is sensible - how concentrated am I, what is my largest single exposure, how much of this sits in one country or one sector, what would a bad year in one industry do to me - cannot be answered from the wrapper at all. They are answered exactly, and for free, by the holdings file the fund is obliged to publish.
Two funds carrying the same three-word theme in their names can hold 28 companies or 310. They can charge 0.60% or 0.12%. One of them can have two thirds of its money in ten names and the other under a quarter. They are not variants of one another; they are different investments sharing a marketing category, and the only document that reveals which one you are holding is the list.
That does not make the wrapper irrelevant. It matters in exactly two ways, and it is worth being precise about them because everything else said about ETFs versus mutual funds is downstream of these. First, how you transact: one gives you a live price and an uncertain fill, the other a certain fill at a price you cannot see. Second, how money and tax reach you: whether income is paid out or retained, and what the fund's own trading does to your tax position, which lesson five takes apart.
Scale is worth naming too, because it is the reason the wrapper exists at all. Put 10,000 into Fund A and you hold 720 of the largest company and, on average, 1.96 of each of the 250 smallest. Those are not positions you could assemble yourself - not because of commissions, but because 1.96 in a share priced at 60 is not a holding. The wrapper converts an amount too small to spread into a spread amount. That is a real service and it is the whole of what it does.
Educational, not personalised financial advice. Nothing in the Investor Academy is a recommendation to buy, sell or hold anything — what is right for you depends on your own circumstances and the rules where you live.
The same 500 companies, at the same weights, bought two ways on one morning.
The ETF route. At 11:00 the fund is quoted 50.09 bid, 50.15 offer. You buy 200 units at 50.15 and pay 10,030. You saw the price before you agreed to it, and you could have refused it.
The mutual fund route. At 11:00 you place an order for 10,000. Nothing happens until the market closes. The net asset value is struck at 50.00, and you receive 10,000 / 50.00 = 200.0000 units. You knew the sum you were committing; you did not know the price.
Now change one thing. Suppose the market rises 1.8% that afternoon. The net asset value is struck at 50.00 x 1.018 = 50.90 instead, and the same 10,000 buys 10,000 / 50.90 = 196.4637 units. That is 3.5363 fewer units than the 200.0000 above, or 1.7682% fewer, for an identical instruction given at an identical time.
Neither wrapper is better here. The ETF let you choose the price and left the fill uncertain; the mutual fund guaranteed the fill and left the price unseen. What matters is knowing which trade-off you accepted, because both of these look like "I bought the fund" on a statement afterwards.
And the part that gets lost: the asset was identical in both cases. Five hundred companies, same weights, same 7.2% in the largest name. The wrapper changed the transaction. It did not change the investment.
Describing a portfolio by its packaging. "Forty per cent of my money is in ETFs" is a sentence about containers. It is equally true of somebody holding government bonds, somebody holding one country's technology sector at 68% in ten names, and somebody holding a leveraged commodity position. The three have almost nothing in common and the sentence cannot distinguish them.
Reading the name as a specification. A fund's name is chosen to sell it; the index methodology and the holdings file are the specification. Lesson four is largely about the distance between the two, and it is often wide enough to change what you own.
Assuming the letters carry properties. An ETF is not automatically cheaper, broader or more liquid than a mutual fund, and a mutual fund is not automatically more expensive or more actively run. A cheap index-tracking mutual fund and a costly 20-holding exchange-traded fund are the exact reverse of what the labels imply, and both exist in quantity.
Overlooking the share class. Two lines on a statement with the same fund name can be two share classes with different expense ratios, different minimums and different income treatment. Holders sometimes discover they are in the retail class of a fund whose institutional class, holding precisely the same portfolio, charges materially less through a route that was open to them.
The factsheet is a summary somebody chose to show you; the holdings file is the fund. It is published, usually daily for an exchange-traded fund and monthly for an open-ended one, and it is the only document that answers what you actually own. If a fund will not show you its full holdings, that is itself the finding.
One number, two minutes, and it tells you more about how the holding will behave than the name, the category and the star of the marketing page combined. Fund A holds 500 companies and 35.8% of the money is in ten of them. Whether that is acceptable is your judgement; not knowing it is not a judgement at all.
Exchange-traded means a live price, a spread and a fill that may not happen at your limit. Open-ended means a fill you will get at a price struck after you committed. Write down which of the two uncertainties you are accepting before you place the order rather than discovering it on the contract note.
Expense ratio, minimum investment, and whether income is paid out or retained. These vary within one fund, and the differences are often larger than the differences between competing funds. The prospectus lists every class; the sales page usually lists one.
When you want exposure to many assets at once without selecting, buying and administering each of them, when the sum you have is too small to hold the underlying assets in meaningful size, and when the work of direct ownership is the obstacle rather than the decision.
Avoid a fund when the exposure you want is a single asset you could hold directly at lower cost, avoid any fund whose full holdings you have not looked at, and avoid choosing between two funds on the wrapper when the difference that matters is in what they hold.
A shape that turns up constantly in individual portfolios is three or four funds, bought at different times for different stated reasons, whose largest holdings are substantially the same companies. The holder describes the portfolio as spread across several funds and is describing the shelf rather than the contents. It happens because market-capitalisation weighting puts the same few names at the top of a broad fund, a country fund and a sector fund at once, and because nobody adds the weights together. The correction is mechanical: export each fund's holdings, multiply each weight by that fund's share of the portfolio, and sum by company. The number that comes out is routinely two or three times what the holder expected for the largest name.
Diversification is a property of the combined holdings, not of the number of funds. Combine the weights before deciding you are spread.
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