Due diligence on one junior can be 1,000 pages. You follow more than one.
Every quarter brings another ~300 pages per name — MD&A, financial statements. Then a technical report or an AIF lands and a single name crosses a thousand. The agent pulls each filing straight from SEDAR+2 and quotes every number back to its page; a deterministic engine runs the DCF.3 The first pass on every name on your list — so your deep work goes to the ones that earn it.
No signup, no credit card — your first worksheet is free, and you get 2 every month.
Free for 2 worksheets a month. Plus from $49/month researches 25 new names with a watchlist and filing alerts; Pro from $89/month adds portfolio tracking and worksheets that refresh themselves when new filings drop.
- It can't pull the filing — you paste a PDF and hope it read the right one. We fetch the current NI 43-101, MD&A and financials from SEDAR+ and EDGAR.
- It hallucinates the gaps — when the filing is silent, it generalizes from “typical” miners or invents a plausible number. Every fact we surface is pulled from a document and carries its attribution; what isn't disclosed is flagged, never guessed.
- It does the math itself — and gets it wrong, differently each run. We extract the numbers; code runs the DCF identically every time.
- It can't cite — no source, nothing to audit. Every primitive quotes its page and paragraph.
- Its prices are stale — frozen at the training cutoff. Ours are live: LME, spot, FX.
Due diligence isn't a document — it's a stream. Every name on your list files again next quarter, and the technical reports and AIFs keep stacking on top. A worksheet you built in March is quietly wrong by June: costs drift, ounces deplete, shares get issued.
So worksheets here don't rot. Every one carries staleness flags, and on Plus and Pro, when a held name files, you get an email and the worksheet refreshes against the new documents. The reading you'd redo every quarter compounds instead — each filing updates a model that already exists, cited back to the page.
Paste a technical report into a general-purpose chatbot and it will hand you a fair value — confidently — with an invented AISC, arithmetic that won't survive a second look, and a gold price frozen at its training cutoff. You can't check any of it, and you get a different number next time. So the worksheet splits the work: the model only reads and quotes — it does no arithmetic — and a deterministic engine computes every figure from live prices.3 Same inputs, same NPV, every run, each one traceable to a page.
…total cash costs of $987 per ounce and all-in sustaining costs of $1,184 per ounce sold for the quarter, reflecting higher sustaining capital at the El Bagre mill…
Reads and quotes. Performs no arithmetic.
Deterministic code. Recomputed on every override.
Pick a ticker
Any junior gold, silver, or copper name. Canadian (SEDAR+) and U.S. (EDGAR) listings are wired today; LSE and ASX are in the pipeline. Paste the ticker; the agent takes it from there.
The agent reads the filings
Technical reports (NI 43-101, JORC), MD&A, financial statements — pulled through our SEDAR+ integration. Every extracted value carries its citation.
You bring the judgment
Disagree on gold price, AISC, mine life, or jurisdiction tax? Override the primitive. The engine recomputes every derived value around your inputs — deterministically.
A worksheet is only as good as its inputs. We integrate the disclosure registries and market feeds for you — filings, and live commodity prices and FX so the analysis reflects today's market.
NI 43-101 technical reports, MD&A, and financial statements for TSX, TSX-V and CSE issuers — pulled from the filing registry, not a third-party aggregator.
10-K, 10-Q and 40-F disclosures for SEC-registered miners, straight from the source.
LME base-metal prices (copper, zinc, lead, nickel, aluminium), gold and silver spot, and 170+ currency rates — so every margin computes in the right metal, in the right currency.
RNS disclosures and competent person's reports for London- and AIM-listed issuers.
JORC technical reports and ASX announcements for Australian-listed miners.
Investing in precious metals since 2009, across two full junior bear markets. Most first-pass screens are shallow by necessity — you only reach the real fundamentals deep into the funnel, after the hours are already spent.
MineInvestorHub puts that depth in the first scan: disclosed fundamentals extracted from SEDAR+ and NI 43-101 filings, valued with a deterministic DCF, every input traceable to source. You narrow the watchlist sooner, and the deeper work goes only where it's earned.
R.K. PetersFounder, MineInvestorHub · Investing in precious metals since 2009Found a bug or have a question? Reach out directly — rene@mineinvestorhub.com.
Best fitProducers and near-term producers — a real DCF on disclosed production, costs and reserves. Explorers still get the extracted, cited fundamentals; the valuation is indicative until there's a mine plan to model. Comparative peer-basket valuations for explorers and developers are in the pipeline.
DisclaimerMineInvestorHub is a research tool, not an investment adviser. Worksheets are generated from public filings and are not investment advice, a recommendation, or a solicitation to buy or sell any security — a first pass meant to inform your own due diligence, not replace it. The judgment, and the decision, are yours; mining investments carry risk, including the loss of capital.
The free tier is the full product, twice a month — not a stripped-down version. The paywall is workflow, not capability: Plus is for researching names, Pro is for running a portfolio.
Pick a stock. See the math.
Free — 2 worksheets a month, no signup. Plans from $49 / month.
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