If you've ever bought a gold ETF, you might have wondered what you actually own. Is there a real bar sitting somewhere with your name on it? Who buys the gold, and what happens when everyone sells at once?

These questions matter more than they seem. The way gold ETFs work helps explain a puzzle from last month: gold fell sharply even while ETF investors kept buying. Let's walk through how these funds are built.

Where Gold Stands This Week

On Wednesday, spot gold dropped 1.5% to $4,093.03 an ounce, its lowest since October 7, after US consumer prices rose 0.6% in September, according to Reuters via CNBC. Markets raised the odds of a Fed rate hike this month to about 35%, from about 22% before the data.

Days like this send many beginners to gold ETFs, so it's worth knowing what sits behind the ticker.

What a Gold ETF Is

An ETF (exchange-traded fund) is a fund whose shares trade on a stock exchange all day. A physically backed gold ETF holds real gold bars in a vault, and each share represents a slice of that gold.

Take the oldest US example, SPDR Gold Shares (GLD). It launched on November 18, 2004, as the first US-traded gold ETF. Its gold is held by two custodian banks, JPMorgan Chase and HSBC, and its goal is to track the LBMA Gold Price PM (a daily benchmark price set in London), minus the fund's expenses. The fund also publishes lists of the individual bars it holds, and an outside firm counts the gold in the vaults each year.

Not every gold product works this way. Some funds use futures contracts instead of bars, and those can behave differently. This article focuses on the physically backed kind.

Where New Shares Come From: Creation and Redemption

Here's the part most investors never see. When you buy a GLD share on your brokerage app, you usually buy it from another investor. No new gold moves at all.

New shares are made in a separate, wholesale market. According to the SPDR Gold Trust prospectus, shares are created and redeemed only in blocks called baskets, each worth 100,000 shares, and only by large firms called authorized participants (usually big banks and brokers).

The process works roughly like this:

  1. Creation. When demand for the ETF is strong, an authorized participant delivers gold into the fund's vault account. In return, the fund issues a new basket of shares, which the firm can then sell to investors.
  2. Redemption. When investors are selling, an authorized participant can hand a basket of shares back to the fund and receive the matching gold.

This is why ETF demand can become real physical demand. If investors keep buying, someone has to go out and buy actual bars to create new shares. If investors keep selling, gold can flow back out of the vault and into the market.

Why the Share Price Stays Close to Gold

Because authorized participants can swap shares for gold and back, they have a reason to keep the ETF price close to the value of the gold behind it (called net asset value, or NAV).

If the shares trade above the gold's value (a premium), a firm could create new shares and sell them at the higher price. If they trade below (a discount), a firm could buy cheap shares and redeem them for gold. These trades tend to push the price back toward fair value. Small gaps can still appear in fast markets, but for large funds they usually seem short-lived.

The Slow Shrink: How Fees Work

Gold pays no interest, so a gold ETF has no income to pay its bills. Instead, it sells a little gold. GLD charges 0.40% a year, and its prospectus says the trust sells gold, roughly monthly, to cover expenses. Over time, each share stands for slightly less metal.

According to ETF.net, each GLD share represented 0.1 ounce of gold at launch and about 0.0918 ounce by the end of June 2026, about 8.2% less. In the quarter ended June 30, the trust sold 34,843 ounces to pay expenses.

Here's a rough piece of math. With gold near $4,100, a share holding about 0.0918 ounce would be backed by roughly $376 of gold. That's why an ETF's price doesn't equal one ounce, or even one tenth of an ounce, of gold.

Fees vary a lot. The same ETF.net report lists posted annual fees of 0.25% for iShares Gold Trust (IAU), 0.10% for SPDR Gold MiniShares (GLDM), and 0.09% for iShares Gold Trust Micro (IAUM). GLD's higher fee comes with much bigger trading volume (about $3.4 billion a day), which can matter to large traders, while a lower fee may add up over many years for long-term holders. Tax treatment also differs by country (in the US, for example, these funds can be taxed like collectibles), so it's worth checking local rules.

The September Puzzle: ETFs Bought, Gold Fell

Now for the puzzle. The World Gold Council (WGC) reported that global gold ETFs attracted $10 billion in September. Holdings rose 67 tonnes to a record 4,256 tonnes. Yet total assets fell 7% to $574 billion, because the gold price dropped.

In its weekly markets monitor, the WGC said gold fell more than 8% in dollars in September, a combination of falling prices and big ETF buying it had not seen before at that size. Part of the answer seems to be in futures. Managed money (mostly hedge funds and other speculators) cut their net long COMEX positions by 84 tonnes equivalent over the same period.

Two lessons stand out:

Could ETFs Push Gold Up or Down From Here?

ETF flows may act like a mood gauge for investors. Steady inflows during a price drop, as in September, could suggest that some long-term buyers see dips as a chance to build positions. The WGC suggested persistent inflation, high energy prices, and bond-market worries may have kept that interest alive.

But the same mechanism works in reverse. If rate-hike expectations keep rising after this week's hot inflation data, holding a non-yielding asset could look less attractive, and redemptions might send gold back out of vaults. Nobody can know in advance which force will win.

Key Takeaways

This article is for education only and isn't financial advice.

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