Gold stayed near $4,487 an ounce Tuesday while Canadian gold miners fell sharply. Agnico Eagle dropped approximately 2%, Wheaton Precious Metals shed more than 2.5%, and Barrick Gold lost close to 1.5%, extending declines that were significantly steeper on Friday, when each name fell between 5% and 6%. The S&P/TSX Composite fell 92 points to 33,741 on the day, and the mining sector was among the primary drags.
The surface explanation is the bond market. The US 30-year Treasury yield climbed to approximately 5.2% Tuesday, its highest level in 19 years, according to CNN Business. The 10-year Treasury yield rose to roughly 4.67%. Canada's 10-year government bond yield reached 3.74%, a two-year high, according to Trading Economics. When long-duration yields surge this fast, capital rotates toward fixed income, and equity risk across the board takes a repricing hit. Gold miners, which carry the operating leverage and equity volatility of any resource producer, get caught in that rotation even when the underlying commodity is not the source of the selling pressure.
That is the key analytical distinction most retail investors miss. Gold itself is holding. The miners are falling. The gap between the two is being produced by a specific cognitive pattern that Daniel Kahneman and Amos Tversky identified in their landmark 1974 paper on heuristics and biases, published in Science: the availability heuristic, the tendency to judge the probability or significance of an event by how easily a relevant example comes to mind.
What the Availability Heuristic Is Doing to Miner Valuations
In the current environment, the most available recent signal for investors is: rising yields hurt equity prices. That signal is correct. It has played out repeatedly since the US-Iran conflict began driving the global bond selloff. The Dow fell 322 points Monday, the S&P 500 dropped 49 points, and the Nasdaq declined 220 points. The pattern has repeated consistently enough that it has become the dominant cognitive shortcut investors reach for when they see a yield move.
The problem is that this shortcut bypasses the second analytical step that makes all the difference for miners specifically. Gold equities are not merely equities that happen to be associated with gold. They are instruments with earnings leverage to the gold price. Agnico Eagle, Barrick, and Wheaton earn more when gold is higher. When gold itself holds near $4,487, a miner whose cost of production is, say, $1,200 per ounce is generating substantially more per-ounce margin than it was a year ago when gold traded near $2,800. The bond market move does not change that earnings arithmetic.
The chart above shows the 12-month divergence between gold spot prices and the VanEck Gold Miners ETF (GDX), which contains Agnico Eagle, Barrick, and Wheaton as top holdings, plotted against the US 10-year Treasury yield. The relationship is instructive: miners have underperformed gold spot in every window where yields rose sharply, regardless of where the gold price went, a pattern consistent with the availability heuristic overriding fundamental valuation.
The divergence between gold spot and miners widened sharply in each yield-spike window from November 2025 through May 2026, even as gold itself continued climbing; the Hormuz closure band marks the period where the pattern intensified most severely.
The Earnings Arithmetic Investors Are Skipping
Hersh Shefrin and Meir Statman formalized what they called the disposition effect in a 1985 Journal of Finance paper: investors tend to evaluate positions through the lens of the most recent reference point rather than through the underlying value proposition. In the current context, the reference point is not the gold price. It is the yield chart. Investors see a yield spike and reach for the most available recent outcome: equity prices fell. They sell the miners.
But the miner who can extract gold at an all-in sustaining cost of $1,200 per ounce and sell it at $4,487 is generating a margin that would have been unimaginable 18 months ago. That arithmetic does not change when the US 30-year Treasury yield crosses 5.2%. What changes is the discount rate applied to the equity. For investors with longer time horizons, that distinction matters considerably. For investors making decisions based on what is most cognitively available this week, it is invisible.
Richard Thaler's 1985 work on mental accounting explains the other half of this pattern. Investors compartmentalize gold miners as "equity risk" and gold itself as "safe haven." When the bond market sends a "risk off" signal, the equity compartment triggers a sell response regardless of whether the underlying fundamentals support it. The safe haven compartment is evaluated separately. The result is the exact divergence visible in the chart: gold holds, miners fall.
What This Environment Means for Client Portfolios
For Canadian advisors, the practical implication runs in two directions. Clients who already hold gold miners through names like Agnico Eagle, Barrick, or Wheaton, or through the iShares S&P/TSX Global Gold Index ETF (XGD), are experiencing an emotionally difficult week: the underlying asset they are meant to be protecting against is holding its value, but the equities are declining. That emotional dissonance is precisely the environment in which the availability heuristic produces the most costly decisions. The decision that feels right (reduce exposure to something that is falling) is, in this specific case, not necessarily supported by the underlying analysis.
Clients who do not hold gold miners are watching a different version of the same pattern: they see gold near record levels, miners down sharply, and conclude that miners are "broken" in some fundamental way. That conclusion may also be wrong. The two populations require different conversations, but both conversations begin at the same place: naming the cognitive shortcut that is doing the work and separating it from the underlying analysis.