Junior Mining Investing: How to Size Risk Before You Buy

Peter Grandich has lost seven figures in junior mining investing. Twice. He describes the sector as closer to gambling than to a normal equity strategy, and that warning lands just as the market looks its strongest in years.

Companies on the TSX and TSXV raised more than C$33 billion in equity in 2025, and mining M&A in Q1 2026 ran 34% above the prior year. Capital is flowing again as of October 2026, but it is concentrating in credible projects rather than spreading evenly across every explorer.

Grandich expects the emotional buyers chasing parabolic rises to be washed out. Whether you are one of them depends on decisions you make before you buy.

Here is a practical framework for sizing your risk, reading technical studies, screening any junior, and assessing four companies one veteran is watching.

What are the real odds in junior mining investing?

Start with the numbers that rarely make the headlines. A junior miner is a small company exploring for or developing a deposit, usually with no revenue. These statistics show how often that effort pays off:

Before you put money into any explorer, it helps to see how junior resource stocks work across the whole sector, because exploration-stage companies earn no revenue and depend entirely on repeated financings to stay alive.

• More than 70% of junior projects fail to reach production (projects, per S&P Global Market Intelligence data)
• About 1 in 200 discoveries becomes a productive mine (discoveries)
• Fewer than 1% of grassroots projects reach commercial production (early-stage projects)
• Roughly 1 in 1,000 prospects becomes a significant deposit (initial prospects)
• Cumulative odds from drilling prospect to operating mine sit at about 1 in 1,500 (prospects through to mines)

Then there is time. S&P Global’s World Exploration Trends 2026 reported an average of 16 years from discovery to production. Every one of those years is funded by new share issues, which shrink your slice of the company.

Grandich on speculation Grandich says Wall Street coined the word “speculating” so it would not have to say gambling.

Why the numbers differ

These figures measure different groups. A prospect is an early target, a discovery has confirmed mineralisation, and a project or company may sit anywhere along the development path. They are not one standardised model.

The single figure matters less than the pattern. Every population points the same way.

Plan for permanent loss. That means treating a single junior as a venture bet rather than a normal shareholding, and only taking positions you could watch go to zero.

How do you prepare mentally and financially for a total loss?

Grandich does not speak about losses in theory. He has made seven-figure gains, suffered two seven-figure losses, and has spoken openly about the depression that came with those periods.

His advice is a test you run before buying, not after a fall.

Grandich’s total-loss test Decide in advance whether you could absorb losing the entire position without it affecting your daily life. If the answer is no, the position is too large.

That test turns risk into a sizing rule. You set your position from the maximum loss you can tolerate, not from the upside you hope for. Run this checklist on yourself this week:

1. Confirm the money is genuine risk capital: no emergency funds, borrowed money, margin or cash needed for essentials.
2. Assume an 80-100% decline is possible, and check you can live with it.
3. Assume the next financing is delayed and that buyers for your shares disappear for months.
4. Size each junior as a speculative venture position, so one failure cannot damage your wider portfolio.
5. Write down what you will do in a sharp sell-off before it happens.

Grandich expects a washout of emotional chasers and, in his view, sees opportunity between now and year end for investors who are ready. Your sizing and emotional readiness decide whether a washout becomes a buying opportunity or a financial injury.

For readers wanting to turn the total-loss test into actual numbers, our dedicated guide to junior mining position sizing shows how concentration and diversification trade off across a speculative portfolio.

Why do PEAs and PFSs attract institutional money, and what do they not prove?

Once a junior has a deposit, it publishes studies that estimate whether a mine could make money. Each stage draws in more serious investors, which is why Grandich argues committed companies keep advancing studies rather than tailoring disclosure to retail chatter.

A Preliminary Economic Assessment (PEA) is the first economic sketch of a possible mine. A Pre-Feasibility Study (PFS) adds more detailed engineering and costs. A Feasibility Study is the most detailed analysis before a construction decision.

Grandich calls a PEA essentially an informational brochure, with later studies bringing more reality. He also notes some “lifestyle” companies never intend to publish one, which tells you something about their ambitions.

The rules matter here. Under NI 43-101, Canada’s disclosure standard for mineral projects, a PEA may include inferred resources, the lowest-confidence category of mineral estimate. A PFS-level economic analysis may not.

What the cautionary language is telling you

The Canadian Securities Administrators (CSA) require four prominent warnings on a PEA:

• The study is preliminary.
• Inferred resources are too speculative to be classed as reserves.
• There is no certainty the PEA’s results will be achieved.
• Resources that are not reserves have not shown economic viability.

The CSA has also warned against using a PEA to justify an immediate production decision. Yet one securities-regulator review found 56% of investor presentations lacked the required PEA cautionary language. Read those warnings before the headline numbers, because a company publishing credible studies is inviting scrutiny you should apply too.

What should you check before buying any junior explorer?

Stop asking which stock to buy and start asking which questions to put to every company. The same screen works on any junior, anywhere.

Share-count discipline matters because a company that grows from 10 million to 160 million shares needs a sixteenfold price rise just to break even, so you should compare share-count discipline with ounce growth at every financing stage.

Management and catalysts are what separate Grandich’s favoured names from the field. A catalyst is an upcoming event, such as drill results or a study, that could move the share price.

A major miner taking a stake is a positive signal. It is not a price floor.

Reading the market cycle

The backdrop is strong. Junior financings reached about C$700 million in June 2026, up 67%, and Q1 2026 M&A totalled US$21.6 billion across 121 deals.

The structural case points to gold prices, major miners needing to replace reserves, and scarce permitted projects. The cyclical case points to financing windows, ETF flows and retail enthusiasm that inflate valuations before they correct. The evidence supports both.

2023 was described as the worst market in years, and today’s recovery is selective. A rising sector does not lift every junior equally, so your edge comes from screening runway, management and jurisdiction rather than riding the tide.

Which juniors does one veteran watch, and what drives his views?

Grandich holds four of the roughly 36-37 companies linked to investor Michael Gentile, including McFarlane Lake. All views and upside estimates below are his opinions.

Northisle Copper & Gold: funded, but facing a leadership change

Northisle completed a C$115 million financing and, per Grandich, is funded through final feasibility. Former Barrick executive Alex Davidson now oversees exploration after VP Exploration Pablo Mejia Herrera left effective 11 October 2026. The PFS is targeted for around Q1 2027, though one earlier report gave Q4 2026.

Group Eleven Resources: strong drilling in an overlooked jurisdiction

Group Eleven reported 6.3 metres at 7.9% zinc-plus-lead and 14 g/t silver at Ballywire on 14 October 2026. A C$12,000,825 placement at C$0.90 lifted drilling to about 67,000-75,000 metres from 20,000 metres. Grandich says it trades at least 50% below where it should, blaming Ireland’s place outside typical mining perception.

McFarlane Lake Mining: resource growth at Juby

McFarlane Lake updated Juby to 1.07 Moz indicated gold at 0.96 g/t and 5.09 Moz inferred at 0.87 g/t, with inferred ounces up 61%. Golden Lake drilling returned 109.6 metres at 0.69 g/t, and its drilling permit runs to December 2029.

Radisson Mining: Agnico Eagle backing at O’Brien

Radisson hit 68.24 g/t gold over 6.2 metres within a 140,000-metre programme. Agnico Eagle invested C$57 million, owning about 10.45% non-diluted and 14.9% partially diluted. Grandich sees 2-3 times upside if Radisson is acquired, but that is his opinion, not an evidenced premium.

A watchlist, not a shopping list A respected investor can be early, wrong or overconcentrated, or may hold shares on terms unavailable to you. Use these names as starting points for your own research.

Building a plan you can hold through the next washout

With more than 70% of junior projects failing to reach production, your process matters more than any single pick. Work through it in order:

1. Size every position for total loss.
2. Screen dilution, runway, jurisdiction and management.
3. Read study cautionary language before headline economics.
4. Track catalysts and judge each against what the company promised.

This cycle offers stronger financing and M&A support than 2023-2024, but it remains selective, and neither PEAs nor PFSs remove dilution, permitting, cost-overrun or total-loss risk. Grandich sees a possible dip creating opportunity before year end.

Watch three variables: financing windows, study milestones and strategic investor activity. Being prepared before a drawdown, not predicting it, is what turns volatility into opportunity.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. Past performance does not guarantee future results, and forward-looking statements attributed to individuals are speculative and subject to change.