Lamentations of a mining stock investor

You know the feeling. The metal slips a few per cent and the shares seem to fall twice as far.

October has been a textbook example. In the month to 23 October, SPDR Gold Shares (GLD), which tracks bullion, fell about 6.4% while the VanEck Gold Miners ETF (GDX) fell about 13.2%, according to QuantLake’s weekly data. Gold itself was trading near $4,140 an ounce on 19 October, more than 20% below its January record.

I spent 25 years trading equities, much of it in emerging markets and resource stocks, and this was one of the more dependable patterns I saw on the desk. Clients would ask why their mining shares were not “doing what gold does”. The honest answer is that a miner was never meant to be a substitute for the metal. It is a business, and the market prices it as one. Understanding why can help investors set their expectations, even if it cannot tell anyone where prices go next.

Operating leverage is a double-edged sword

The first reason is simple arithmetic. A mine’s costs are largely fixed in the short run: the haul trucks, the crews, the processing plant and the power bill do not shrink because the gold price has dipped. Profit is the gap between the price received and the cost of getting each ounce out of the ground. When the price falls, that margin shrinks by a larger percentage than the price itself.

The same leverage is what makes miners exciting on the way up. Over the past three years, GDX has returned about 41% a year on an annualised basis, against roughly 26% for GLD, on QuantLake’s figures. Its beta to gold over that period is about 1.56, and its annualised volatility is close to 40%, nearly double the metal’s 21%. Investors who enjoyed that outperformance were, in effect, being paid for accepting this kind of month.

Squeezed from both sides

What makes the current episode more uncomfortable is that costs are not standing still. Diesel powers much of the equipment at many mines, and with Brent crude above $110 a barrel, energy bills are rising just as the gold price falls. That squeezes margins from both sides at once.

Rates add a third pressure. With the US 10-year Treasury yield near 5%, investors have a more attractive risk-free alternative, and smaller miners raising money to explore or expand are likely paying more to borrow and accepting steeper discounts when they issue shares. Higher real yields also have a habit of weighing on gold.

The long-run record is humbling

It is worth stepping back. Over the full period since 2006, GDX has returned about 4.7% a year, against about 8.8% for GLD. Over almost two decades, then, the metal has done better than the companies that dig it up, despite the miners’ bursts of spectacular outperformance.

Part of that reflects the industry’s own history. In earlier cycles, many producers spent heavily on acquisitions and high-cost projects when prices were high, and then wrote much of it off when prices fell. Investors learned to apply a discount to the sector’s promises. That memory still shapes how the market treats miners today, and it is one reason the shares can stay cheap relative to the metal for long stretches.

Possible catalysts

None of this means miners are doomed to lag. In my experience, the turns have usually come from a few recognisable sources, though none is a timing signal.

Costs stabilising. Because margins are so important, a pause in energy and labour inflation can matter as much as a rise in the gold price. It may be worth watching what producers say about all-in sustaining costs when they report third-quarter results over the coming weeks.

Discipline showing up in cash. The market has rewarded producers that return cash through dividends and buybacks and keep balance sheets tidy, rather than chasing growth at any price. Free cash flow per ounce is often a better guide than production targets.

The ratio stretching too far. Relative value has a way of reasserting itself. The GDX-to-GLD price ratio was around 0.219 on 23 October, in the middle of its 12-month range of roughly 0.187 to 0.247. Earlier this month, miners briefly outperformed the metal for several sessions before that reversed, a reminder that catch-up rallies can be short-lived until the underlying drivers change.

A shift in the rate outlook. Gold has historically been sensitive to real yields. If the market’s view on US rates changes, the metal often responds first and the miners, with their higher beta, respond more.

Know which exposure you own

The practical lesson, I think, is to be clear about what each instrument is for. Physical gold, or a fund that holds it, is exposure to the metal and nothing else. A mining share is exposure to the metal plus management, costs, geology, politics and the balance sheet. When I traded emerging markets, the same logic applied to almost every resource stock: the commodity set the weather, but the company decided whether you got wet.

That is not an argument for or against either. It is an argument for sizing and expectations. Investors who buy miners for their leverage should expect months like this one, and investors who want a steadier store of value may find the metal itself does the job with fewer surprises.

The miners’ third-quarter results, and the Fed’s decision on 28 October, should give a clearer picture of whether margins are bending or breaking. Good luck out there.

This column is research and commentary, not investment advice.