What Is an Infrastructure Fund? Listed vs Unlisted, and 18 Years Against Inflation
Michael Whitman
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Trading since 2017, full-time since 2020
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YouTube creator, 137K subscribers
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Published 2026-09-14
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Updated
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Reviewed
Infrastructure fund invests in long-lived physical assets such as toll roads, utilities, pipelines and airports, typically for inflation-linked income over decades. Its reported returns look unusually stable partly because the assets are valued periodically by appraisal rather than traded continuously.
An infrastructure fund is a fund that owns long-lived physical assets, such as toll roads, power grids, pipelines, airports and water systems, or shares in the companies that operate them, for income that is usually set by contract or by a regulator. The two big claims made for it are steadiness and protection from inflation, and both can be checked against a fund that is priced every day.
That check is what this page adds. Using the iShares Global Infrastructure ETF (IGF) since 2007, the steadiness mostly disappears once the price is visible, and the inflation protection showed up in one of the two high-inflation years, not both.
How it works
The fund buys assets that are hard to copy. Nobody builds a second motorway beside a toll road or a second set of water mains under a city, and the concession often forbids a competitor outright.
The income is written down in advance. A concession agreement or a regulated-return framework sets what the operator may charge, frequently for twenty years or more, and many tariffs rise each year with a published price index such as the consumer price index.
Demand barely moves with the economy. People keep drinking water, heating homes and driving to work in a recession, so revenue is steadier than for most businesses.
The money comes in two wrappers. A listed fund holds shares of operators like utilities, pipeline companies, airport groups and tower owners, and its own price changes every second the market is open. An unlisted fund buys stakes in the assets directly, locks investor money for years and reports a value set by a valuer, usually each quarter.
Listed versus unlisted
Same kind of asset, different measuring stick. Two vehicles holding stakes in the same electricity network can report very different risk, purely because one is marked by a market and the other by an appraisal.
Appraisals move slowly by design. A valuer starts from last quarter’s number, runs a discounted cash flow model and adjusts for what changed, which damps the swings a traded price would show.
Looking less often is not the main reason. Measured only at quarter-ends, IGF’s volatility from 2008 to 2026 was 17.15% a year, against 20.17% from daily prices. Seeing the price four times a year took about three points off, nowhere near a single-digit figure. The lag inside the valuation does the rest.
So every number built on that series inherits it. A Sharpe ratio divides return by volatility, and a correlation with stocks measured against a slow-moving appraisal comes out lower than the market reality. IGF’s daily returns had a correlation of 0.82 with SPY’s.
Liquidity is the other half of the trade. A listed fund can be sold the same day. An unlisted or interval fund lets money out on a schedule, and when many investors want out at once, the gate is the liquidity risk the smooth number never showed.
A worked example
Start with the inflation claim, using real prices. Put $10,000 into IGF at its close on the last trading day of 2020, 31 December, and the same into SPY. Hold both through two years in which US consumer prices rose 7.17% and then 6.40%.
By the last close of 2022 (30 December), with dividends reinvested:
| $10,000 from 31 Dec 2020 to 30 Dec 2022 | Value | Short of the price rise by |
|---|---|---|
| IGF, listed infrastructure | $11,017 | $386 |
| SPY, S&P 500 | $10,533 | $871 |
| What prices required (CPI, Dec 2020 to Dec 2022) | $11,404 |
IGF did its job better than stocks, and still lost buying power. It finished 3.39% short of what $10,000 needed to buy the same basket, against 7.63% short for SPY. The whole of IGF’s lead came in 2022: IGF fell 1.26% while SPY fell 18.18%. In 2021 the order was reversed, IGF up 11.58% and SPY up 28.73%.
Now the income side. IGF closed 2024 at $52.27, so $10,000 bought 191.31 shares. It paid two distributions in 2025, $0.983 a share in June and $0.996 in December, a total of $1.979. That is $378.61 of cash on the $10,000, a 3.79% dividend yield on the purchase price. The share price itself ended 2025 at $61.36, which is a reminder that the price, not the payout, drove most of that year’s result.
The original data
Two questions, two data sets. The first is how much a daily-priced infrastructure fund actually moves. The second is how it did, year by year, against stocks and against inflation.
How much it moves. From Yahoo Finance daily history for IGF and SPY (downloaded 27 Oct 2026), adjusted closes on all 4,747 sessions from 12 December 2007 to 26 October 2026. Volatility is the standard deviation of daily returns times the square root of 252; drawdown is the distance below the highest adjusted close so far.
| Dec 2007 to Oct 2026 | IGF (listed infrastructure) | SPY (S&P 500) |
|---|---|---|
| Annualized volatility, daily returns | 20.17% | 19.69% |
| Annualized volatility, quarter-end returns | 17.15% | 16.63% |
| Deepest fall | -58.33%, 2 Jan 2008 to 9 Mar 2009 | -53.36%, 26 Dec 2007 to 9 Mar 2009 |
| Fall in early 2020 | -42.11%, 18 Feb to 23 Mar | -33.72%, 19 Feb to 23 Mar |
| Annualized return | 4.66% | 11.07% |
Infrastructure fell harder in both crashes. SPY’s falls are measured from December 2007, after its October 2007 peak. Every figure is in the IGF and SPY summary file, with the month-by-month path in the drawdown file. A second source agrees: Nasdaq’s IGF closes from 26 October 2016 to 26 October 2026 matched Yahoo’s within $0.01 on all 2,513 sessions.
How it did, year by year. A fresh download on 1 Nov 2026 gives calendar-year total returns from the last adjusted close of each year, set beside the change in the US consumer price index (FRED series CPIAUCSL, seasonally adjusted, December to December). That is 18 full years, 2008 to 2025.
- IGF beat SPY in 2 of the 18 years: 2022 (by 16.92 points) and 2025 (21.31% against 17.72%).
- Only two years had inflation above 4%: 2021 (7.17%) and 2022 (6.40%). IGF trailed SPY by 17.15 points in the first and led by 16.92 points in the second.
- In the other 16 years IGF trailed SPY by an average of 7.77 points a year. Its worst gap was 2020, when it lost 6.50% and SPY gained 18.33%.
Two inflation years are a tiny sample, so this is a description, not a rule. It says the protection is real in some conditions and absent in others, and that a stock-market rally can swamp it. The full table is in the calendar-year file.
The limits. IGF holds listed companies worldwide, so its price also carries currency moves and stock market mood that one toll road does not. It is one fund over one period, and an unlisted fund holding different assets could have done better or worse.
Why 2021 and 2022 went opposite ways
This is the usual reading of those two years, not something the table proves.
In 2021 inflation arrived with a boom. Stocks rallied hard on reopening and growth, and steady, regulated cash flows had nothing to offer against that. IGF rose, just far less.
In 2022 inflation arrived with rising rates and falling stocks. Growth shares were repriced lower, and assets whose tariffs reset with prices looked relatively better. That is the setting the inflation case is built for.
Rates cut both ways. Long, bond-like cash flows are valued with a discount rate, so higher interest rates lower what they are worth even when the income is indexed, which is why IGF still fell 1.26% in a year that suited it.
When it fails
The classic failure is political. A concession signed by one government is renegotiated by the next, which decides the tariffs it inherited are too generous. The road carries the forecast traffic and the contract is valid; the counterparty changed its mind. This is country risk at its most concentrated.
Traffic forecasts are a second failure. A toll road is priced on volumes projected decades ahead, and several large concessions have been restructured or handed back when traffic came in well below the plan the debt was built on.
Leverage turns a shortfall into a credit problem. These assets usually carry heavy borrowing against the stable income, so a small miss on revenue can breach a lender’s coverage test.
Smoothed numbers are a fourth. A low reported volatility measures the valuation process, not the asset; the same kind of business, priced daily, fell 58.33% from 2008 to 2009.
And the exit is the fifth. Unlisted money is locked for years, and selling a stake early means accepting whatever discount the secondary market offers that month.
Questions people ask
What is an infrastructure fund?
A fund that owns roads, utilities, pipelines, airports or towers, or shares in their operators, for long contracted income. Listed versions trade daily; unlisted ones report quarterly appraisals.
Is infrastructure a good hedge against inflation?
Partly. From 2008 to 2025 IGF beat SPY in 2022, when prices rose 6.40%, but trailed by 17.15 points in 2021, when they rose 7.17%. Held through both years it still fell short of inflation.
How do I compare infrastructure funds?
Check whether it is listed or unlisted, how often it is valued, how and when you can sell, the total fees, and how much of it sits in one country or one sector. A closed-end fund can also trade away from the value of what it holds.
Is now a good time to invest in infrastructure funds?
No data set answers that. What the record shows is the range: years of lagging stocks, one standout year in 2022, and falls of 42.11% in 2020 and 58.33% in 2008 and 2009.
Related
Closed-end fund explains the listed wrapper that can hold illiquid assets. Liquidity risk covers what a long lock-up exposes you to. And country risk covers the political exposure that concessions concentrate.
The inflation linkage in these assets is genuine and contractual, which is rare and valuable. The smoothness of the reported returns is not — it is a measurement artifact of valuing something quarterly by appraisal instead of continuously by trading, and it makes the risk look smaller than it is.
— Michael Whitman
This page is educational, not financial advice. Test every idea on your own charts before risking money.