Type a ticker. The company's filings become a worksheet you can challenge, every figure traced to its page. Your assumptions sit on top, and your thesis is checked when the company files again.
No signup or credit card for your first worksheet. Create a free account for your second worksheet each month.
Built for junior gold, silver, and copper investors. You control the assumptions. First company needs no account.
Your thesis is spread across filings, prices, spreadsheets, and notes. MineInvestorHub connects each new fact to the assumptions and valuation it changes, with every figure linked to its source. The conclusion stays yours.
“AISC stays below $1,300/oz while production scales”
Moved outside your range. $1,410/oz reported · MD&A Q2 · p.12. You decide what to retain, revise or retire.
Hold. Thesis weakened on cost, not on resource. Revisit after Q3 AISC; trim if > $1,500.
Not a funnel that ends at a report. Every stage feeds the next, and a new filing sends you back around.
Decide whether a company deserves deeper research. Stage, principal asset, resource basis, cash, burn and capital structure — each with its source and date.
Turn the technical and financial disclosure into your own economic view. Replace management's assumptions with yours; run bear, base and bull.
A filing, operating result, financing or price move lands. See which assumptions it touches and whether the change is material.
Evaluate holdings and watchlist candidates on the same gold deck, discount rate and date.
Learn why similar miners produce different cash flow, then apply the framework to a real company. Free, no signup.
Open the filings as a cited worksheet. Change an assumption and see the case recompute.
Market assumptions and company-specific operating assumptions sit side by side. Replace any reported figure with your own; the range recalculates and the reason stays attached.
| Year | Production (oz) | AISC ($/oz) |
|---|---|---|
| Y1 | ||
| Y2 | ||
| Y3 | ||
| Y4 | ||
| Y5 |
Question you asked: “If production falls 10%, gold falls to $2,100/oz and AISC rises $150/oz, what happens?” → base value/share C$2.04 · bear case falls below the share price
| Au / DR | 8% | 10% | 12% |
|---|---|---|---|
| $1,900 | $202.7M | $186.3M | $171.8M |
| $2,100 | $318.1M | $292.4M | $269.6M |
| $2,300 | $433.5M | $398.4M | $367.3M |
| $2,500 | $548.9M | $504.5M | $465.1M |
| $2,700 | $664.3M | $610.5M | $562.9M |
Fifteen cells the engine computed, not a curve drawn between two of them. Your case sits at $2,300 /oz and 10% — C$398.4M.
Ranges, not a target. The lattice above sweeps price and discount rate only; the bull case is its $2,700 row, while the bear case moves production 10% below the filing plan, moves price to $2,100 and adds $150/oz of cost — which is why it lands below the grid's own $2,100 row rather than on it.
Holdings ask “is this still investable?” Watchlist asks “has this become investable?” Statuses are research states you set — never buy or sell signals.
Every number on a worksheet is either quoted from a filing, with its page, or labelled as an assumption you can change. Pick a figure.
Total cash costs were $1,096 per ounce sold for the quarter, compared with $1,012 in the comparative period. All-in sustaining costs were $1,410 per ounce sold, reflecting higher sustaining capital at the mill and the timing of the tailings lift. Management expects sustaining capital to normalize in the fourth quarter.
MineInvestorHub does the extraction and recalculation. You decide what the evidence means.
Important inputs link to the underlying filing, page and quote.
MD&A Q2 2026 · p.12Calculations and assumptions are visible. Nothing is computed you can't inspect.
(NPV − net obligations) ÷ shares FDReplace reported or default assumptions with your own, at any cell.
10.0% over 8.0%Changes and overrides retain their reasoning and date.
Jun 14 · "single-asset producer, add 200 bp"A chat can answer a mining question. An investment case has to stay right for months. MineInvestorHub keeps the filings, assumptions, calculations and changes together, so you can maintain your view across every company you follow.
Find, download and re-upload every report.
Pulled from SEDAR+ and EDGAR, with a page for every figure.
Copied into a prompt, with no lasting record of the date.
One dated price and FX set across every worksheet.
You have to remember to re-check, then redo the whole answer by hand.
A new filing lands against your saved assumptions and shows which one moved.
Each company becomes a separate, incomparable conversation.
The same method and assumptions across your portfolio.
Paid plans add more companies, monitoring and portfolio-wide tools.
Free tier: two worksheets per calendar month. No credit card or email for the first; a free account for the second. Plus and Pro prices are per month; annual plans are billed annually ($588 and $1,068), monthly billing is $61 and $105. Paid plans open when checkout ships.
Investing in precious metals since 2009, across two full junior bear markets. MineInvestorHub puts filing-level depth in the first scan, so the deeper work goes only where it is earned.
R.K. PetersFounder, MineInvestorHubFound a bug or have a question? rene@mineinvestorhub.com
Yes. The guided path explains mining terms, why an input matters, how reported facts differ from targets and assumptions, and which questions apply to the company's stage. You get the same source-cited evidence and calculations as an experienced investor, not a simplified score or a stock pick.
No. The model reads across the filings, connects the evidence and explains what changed. The case you build on top, the conditions you set and your conclusion stay yours.
You get an explorer worksheet: geological and mineral-inventory evidence, project enablers, treasury, runway, and the financing and dilution cases you define. No mine DCF is manufactured when the disclosures cannot support one.
Every worksheet is built by reading the company's filings page by page, pulled from SEDAR+ and EDGAR, with a model whose cost scales with the pages it reads, plus the price and FX feeds that keep it current. A cheaper plan would have to read less: skip the technical report, or extract only the summary tables. That is exactly where the figure on page 38 gets missed. The price buys the whole document set, read every time, and the market data behind every recompute. Free covers two companies a month at the same depth, so you can judge the depth before you pay for the breadth.
Your first worksheet needs no account or credit card. A free account covers a second worksheet in the same calendar month. The worksheet itself is not stripped down.
Start with a company you already follow and see how its filings, assumptions, and valuation connect.
No signup or credit card for your first worksheet. Create a free account for your second worksheet each month.
No signup or credit card for your first company. Create a free account for your second each month.