Mining's Veteran Investors Bet on Patience, Not Prediction

At the 2026 Rule Symposium, a "Living Legends" panel featuring Adrian Day Asset Management founder Adrian Day and a fireside chat with SCP Resource Finance chairman Peter Grosskopf centered on four behavioral disciplines: knowing yourself, narrowing your circle of competence, treating volatility as the cost of large gains, and refusing to sell winners early.

Resource investing conferences usually run on tickers. The 2026 Rule Symposium spent a meaningful part of its programming on something harder to package: the habits that separate investors who survive multiple mining cycles from those who don't. A "Living Legends" panel and a separate fireside chat with Peter Grosskopf, an investment sector veteran and chairman of SCP Resource Finance, both landed on the same short list of disciplines — and none of them were about finding the next discovery hole.

The four ideas that surfaced across both sessions, as reported by INN Precious Metals: know yourself, narrow your circle of competence, treat volatility as the price of admission for outsized wins, and resist the urge to sell your best ideas too early.

Self-knowledge before stock selection

The panel opened not with names to buy but with an inventory of what each participant is actually good at. Adrian Day, founder of Adrian Day Asset Management, described his advantage as a way of thinking rather than a proprietary screen or model — a mapped-out sense of where he holds an edge and, more usefully, where he does not.

Day also made the case that breadth can be an edge in its own right, which cuts against the industry habit of hiring specialists. "There's also an advantage in being a generalist because you can compare one thing with another… You can see where value is at any given time," he said.

That argument is worth unpacking, because it is doing real work. A specialist in, say, West African gold developers can tell you which of them is cheapest relative to the others. A generalist can tell you whether the whole cohort deserves capital at all this year, or whether the money belongs in copper, uranium or nothing. In a sector where the dispersion between subsectors in a single year routinely dwarfs the dispersion within them, the comparative view is not a consolation prize for lacking depth. It is where allocation decisions actually get made.

"Circle of competence" is borrowed language — the phrase describes the set of businesses an investor understands well enough to judge. In mining it carries extra weight, because the ways to lose money are numerous and technical: metallurgy that doesn't behave at scale, permitting timelines that stretch past the financing runway, jurisdictions where a fiscal regime can be rewritten between feasibility study and first pour. An investor who cannot read a resource statement or model a capital cost overrun is not analyzing those risks. They are underwriting them blind.

Volatility reframed as a cost, not a signal

The second theme was the one that separates theory from practice. Junior mining equities are among the most volatile listed instruments available to retail investors. Drawdowns of a magnitude that would end a career at a long-only equity fund are, in this corner of the market, an ordinary Tuesday.

The panel's framing was that this volatility is the fee an investor pays for access to the return profile. You cannot own an asset capable of a multi-fold re-rating on exploration success without also owning an asset capable of halving on a bad drill result or a financing at a discount. Investors who insist on smooth equity curves are structurally excluded from the payoff, because the payoff and the noise come from the same source — a small company whose value depends on information that arrives in discrete, unpredictable lumps.

What follows from that is a portfolio construction point rather than a stock-picking one. If volatility is the cost, then position sizing, cash reserves and the ability to add during drawdowns matter more than entry timing. Investors who are fully invested at the top of a cycle have no capacity to act when their thesis gets cheaper, which is precisely when the arithmetic is best.

Selling winners early is the expensive mistake

The fourth message — resist selling your best ideas too soon — is the least intuitive and, in a sector this volatile, the hardest to hold. A junior that doubles creates an immediate temptation to bank the gain. The counterargument the panel advanced is that resource portfolio returns are dominated by a small number of very large winners, and that trimming those positions on the way up converts a portfolio-defining outcome into an ordinary one.

This is where the behavioral advice becomes uncomfortably concrete. Selling a winner feels like discipline. It produces a realized gain, a decision that can be defended, and relief from the anxiety of a large position. What it also produces, mathematically, is a truncated right tail — and in a strategy that depends on the right tail, that is the one thing you cannot afford to cut off.

Grosskopf's participation adds a financing-side perspective to that argument. SCP Resource Finance sits where capital meets projects, which gives its chairman a view of how many companies need money, on what terms, and how often equity holders get diluted between discovery and production. That vantage point tends to make an investor more selective about which stories are worth holding through the full arc — and more skeptical of the many that are not.

The backdrop the advice was delivered against

The symposium's message about tolerating ugly markets landed during a session in which broad U.S. equities were themselves under pressure. At the close on Aug. 20, 2026, the S&P 500 tracker SPY finished at $762.60, down 0.84% from the prior close of $769.06, and near the bottom of a day range of $762.04 to $768.15. The Nasdaq 100 proxy QQQ closed at $710.93, off 0.72%, while the Dow 30 tracker DIA was the weakest of the three at $527.59, down 1.25%.

Broad-market weakness is not itself a mining story, but it is the environment in which the panel's advice gets tested. The behavioral counsel — don't force conviction outside your competence, don't confuse volatility with permanent loss, don't liquidate your best position because the tape is red — is easy to nod along to at a conference and difficult to execute when the index closes at the low end of its range.

What to take from it

Nothing in either session amounted to a recommendation. That is arguably the point. The panel's implicit claim is that in resource equities the marginal return to better analysis is smaller than the marginal return to better behavior, because the analytical edge decays and the behavioral edge compounds.

For anyone allocating to the sector, the practical checklist is short. Write down which parts of the mining complex you can actually evaluate, and stay inside that boundary. Size positions so that a severe drawdown does not force a sale. Keep enough cash to add when a thesis improves in price. And when something works, ask whether you are selling because the case has changed or because the gain has become uncomfortable. Those are different reasons, and only one of them is investing.

Key facts

• Event: 2026 Rule Symposium — "Living Legends" panel and fireside chat
• Speakers cited: Adrian Day (Adrian Day Asset Management); Peter Grosskopf (chairman, SCP Resource Finance)
• Four core messages: Know yourself; narrow your circle of competence; treat volatility as the cost of big wins; don't sell best ideas early
• Market close, Aug. 20, 2026 (20:00 GMT): SPY $762.60 (-0.84%); QQQ $710.93 (-0.72%); DIA $527.59 (-1.25%)

Frequently asked questions

What is a "circle of competence" in mining investing?

It is the set of assets and businesses an investor understands well enough to judge on the merits. In mining, that means being able to read a resource statement, assess metallurgy and capital cost risk, and evaluate permitting and jurisdictional exposure. The panel's argument was that investors should define that boundary explicitly and stay inside it rather than stretching for unfamiliar stories.

Why did Adrian Day argue that being a generalist is an advantage?

Day said that comparing one thing with another lets an investor see where value sits at any given time. A specialist can rank companies within a niche; a generalist can judge whether the niche deserves capital at all relative to other metals and other subsectors. Allocation decisions, in his framing, come from that comparative view rather than from depth alone.

What does treating volatility as a cost actually mean in practice?

It means accepting that large drawdowns are inseparable from the outsized upside junior miners can deliver, because both come from the same lumpy flow of exploration and financing news. Practically, it shifts the emphasis to position sizing and holding cash reserves so a severe decline does not force a sale — and so an investor can add when the thesis gets cheaper.

Why is selling winners early considered a mistake here?

Resource portfolio returns tend to be dominated by a small number of very large winners. Trimming those positions as they rise feels like prudent risk management but truncates the upside the whole strategy depends on. The panel's advice was to distinguish between selling because the investment case has changed and selling because a large gain has become psychologically uncomfortable.

Who is Peter Grosskopf?

Grosskopf is an investment sector veteran and chairman of SCP Resource Finance, and he appeared in a fireside chat at the 2026 Rule Symposium. His firm operates where capital meets mining projects, which gives him visibility into financing terms, dilution and which development stories are able to fund themselves through to production.

How did broad U.S. markets close on the day of the report?

At the last trade on Aug. 20, 2026, at 20:00 GMT, the S&P 500 tracker SPY closed at $762.60, down 0.84% from $769.06. The Nasdaq 100 proxy QQQ closed at $710.93, down 0.72%. The Dow 30 tracker DIA was weakest, closing at $527.59, down 1.25%. Markets were closed at the time of writing.

Sources

• What Mining's "Legendary" Investors Do Differently — INN Precious Metals

Photo: Werner Pfennig · Pexels Licence — source