What is the fundamental difference between GDX and IAU in terms of what they hold?

GDX (Gold Miners Market Vectors ETF) and IAU (Ishares Gold Ishares New) represent two distinct ways to gain exposure to the gold sector. GDX is categorized as an Equity Precious Metals fund, meaning it holds shares in gold mining companies like Newmont (NEM) and AngloGold Ashanti (AU). Conversely, IAU is a Commodities Focused fund, which typically holds physical gold assets or trusts directly backed by gold. Therefore, investors in GDX are buying into the business operations of miners, while IAU investors are buying into the commodity price itself. This structural difference drives their risk and return profiles.

How do expense ratios differ between GDX and IAU, and what does this mean for investors?

The expense ratio is an annual fee that reduces the net return of an ETF. GDX has an expense ratio of 0.51%, whereas IAU has a significantly lower expense ratio of 0.25%. This represents a difference of 0.26 percentage points. While this might seem small, fee differences compound over time, potentially creating a noticeable gap in final returns. Lower fees, like those in IAU, can be advantageous for long-term holders who prioritise cost efficiency. However, higher fees, as seen in GDX, may reflect the operational complexities of managing an equity portfolio of mining companies compared to holding physical assets.

Why does GDX pay a dividend yield while IAU does not?

GDX has a reported dividend yield of 0.66% because it holds equities in gold mining companies, many of which distribute a portion of their earnings to shareholders. These dividends are passed through to GDX investors. In contrast, IAU has a dividend yield of 0.00% because it focuses on physical gold assets. Gold itself does not generate income or pay interest. Consequently, the total return of IAU relies entirely on capital appreciation, driven by changes in the spot price of gold, rather than on income generation from underlying holdings.

How do the top holdings of GDX and IAU compare in terms of overlap?

The top holdings of GDX and IAU show no overlap among the listed top ten holdings. GDX's top holdings are equity positions in specific mining companies, such as NEM at 10.91% and AU at 5.02%. IAU's top holdings details are listed as not available in the provided data, but as a commodities fund, its structure differs fundamentally from equity funds. This lack of shared holdings highlights the divergent nature of the two funds: GDX offers company-specific risk and potential upside, while IAU aims to track the commodity itself without corporate equity exposure.

What are the scale and history differences between GDX and IAU?

IAU is significantly larger in net assets, with $64.9 billion compared to GDX's $28.4 billion. A larger asset base can often lead to better liquidity and tighter bid-ask spreads for traders. Furthermore, IAU has a longer operational history, with an inception date of Jan 21, 2005, while GDX began on May 22, 2006. This additional year of track record may appeal to investors seeking an established commodity vehicle. However, GDX's seven years of prior data since inception still provides a substantial period for analysing its performance relative to the gold mining sector.

How does concentration risk appear in GDX compared to IAU?

GDX exhibits notable concentration in its top holdings, with NEM and AU accounting for 10.91% and 5.02% of the portfolio respectively. This concentration means GDX's performance can be heavily influenced by the operational success or failure of these specific companies. In contrast, sector weight details for IAU are listed as not available. Generally, funds tracking physical commodities have different concentration risks, often centred on the issuer of the gold trust or the security of the physical asset, rather than corporate equity concentrations. Investors should be aware that GDX carries company-specific risks that a pure commodity fund might avoid.

What investing goals are typically associated with each of these funds?

IAU is generally associated with goals involving hedging against inflation or seeking direct exposure to the gold price without taking on corporate management risk. It suits investors who believe gold itself will appreciate. GDX is often viewed as a high-beta play on gold, where investors seek leveraged exposure to gold price movements through the operating leverage of mining companies. GDX is typically associated with goals where an investor believes mining companies will outperform the commodity due to operational efficiencies or rising margins. Neither fund is recommended over the other; the choice depends on whether one prefers corporate equity exposure or direct commodity exposure.

How might the market categories of these funds influence their behaviour?

GDX is classified as Equity Precious Metals, meaning it behaves like an equity sector fund. Its price is influenced by gold prices, mining costs, corporate earnings, and broader stock market sentiment. IAU is classified as Commodities Focused, meaning it primarily tracks the spot price of gold. During periods of equity market volatility, GDX may experience sharper declines due to its correlation with the stock market, whereas IAU might hold its value or rise if gold is seen as a safe haven. Understanding these category distinctions helps in predicting how each fund might react to different macroeconomic environments.

Why is index tracking information unavailable for both funds, and how should I interpret this?

The provided data lists index tracking details as 'not available' for both GDX and IAU. Typically, GDX tracks the NYSE Arca Gold Miners Index, and IAU tracks the spot price of gold via a trust, but without explicit index data in this summary, we cannot verify the precise benchmark mechanics. Investors should consult the issuer's website for specific benchmark methodologies. The absence of index data in this comparison highlights the importance of looking beyond headline metrics. For GDX, tracking the miners' index implies active management within the sector, while IAU's structure suggests a passive commodity replication, though exact tracking methods vary.

What should beginners consider when reading the 'not available' data points?

When data such as sector weights or specific top holdings for IAU are marked 'not available', beginners should exercise caution and seek additional information from official fund fact sheets. For GDX, we have detailed top holdings like CDE at 2.29% and RGLD at 1.93%. For IAU, the lack of visible holdings data does not mean the fund is opaque, but rather that this specific dataset omitted it. Practical due diligence involves verifying these figures independently. Relying solely on partial data can lead to a misunderstanding of a fund's composition, especially for commodities ETFs where structure differs significantly from equity ETFs.

Disclaimer: Is this comparison suitable for financial advice?

No. This content is for educational purposes only and does not constitute financial advice. The comparison between GDX and IAU is based on specific data points such as expense ratios, net assets, and yields as of the fetched date. Market conditions, fund structures, and performance metrics can change rapidly. Investors should conduct their own independent research and consider their risk tolerance, investment horizon, and financial goals before making any decisions. Past performance, such as GDX's track record since 2006 or IAU's since 2005, is not indicative of future results. Always consult with a qualified financial advisor.

GDX vs IAU

Two funds, one decision: we compare cost, performance and what each ETF actually holds in September 2026.

Compare GDX (Gold Miners Market Vectors ETF) and IAU (Ishares Gold Ishares New). Review fees, holdings, dividends and how each fund tracks its market. Educational content, not financial advice.

Fund Snapshot

Key Fund Metrics

GDX

Metric

IAU

0.51%

Expense Ratio

0.25%

0.66%

Dividend Yield

0.00%

$28.42B

Net Assets

$64.93B

62

Holdings

1

May 22, 2006

Inception Date

Jan 21, 2005

–

Index Tracked

–

Equity Precious Metals

Fund Category

Commodities Focused

IAU costs about $26.00 less per year for every $10,000 invested.

Shared Top Holdings

These funds do not share any of their top holdings.

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Investment Analysis

GDX

Pros

GDX offers a higher net asset base of $28.4 billion for potentially better liquidity.
The fund provides equity exposure to gold mining companies with a dividend yield of 0.66%.
Since its inception in 2006, it has established a long track record of operations.

Considerations

The expense ratio of 0.51% is higher compared to many commodity-focused funds.
Key index tracking details are not available in the provided data.
It carries significant concentration in top holdings like NEM and AU.

IAU

Pros

The expense ratio of 0.25% is significantly lower than that of GDX.
IAU boasts a substantially larger net asset base of $64.9 billion.
It has a longer operational history, dating back to its inception on Jan 21, 2005.

Considerations

This fund has no dividend yield as its focus is on physical gold assets.
Details on index tracking and specific top holdings are not available.
Sector weights information is absent, limiting visibility into its asset distribution.

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About GDX and IAU

GDX (GDX)

GDX (Market Vectors Gold Miners ETF) gives investors broad exposure to publicly listed companies engaged in gold mining and related activities. As an ETF, it tracks an index of gold miner equities rather than the metal itself, so its performance reflects miners’ share prices, production profiles, costs and sensitivity to gold prices. GDX can offer a convenient way to gain sector exposure, diversification across many miners, and liquidity via an exchange-traded structure, but it also concentrates on a single commodity-linked industry which can be volatile. Factors investors should monitor include the gold price, miners’ operational costs, geopolitical risks in mining regions, and changes in interest rates that influence gold demand. This information is for educational purposes only and is not personal financial advice; values can fall as well as rise and past performance is not a guide to the future. Suitability depends on individual circumstances and risk tolerance.

IAU (IAU)

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