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Marketshare.Investing
Subscribe · $12/mo
Sample data
S&P 500612.44+0.36%Nasdaq 100559.12+0.70%Dow 30448.76-0.19%Russell 2000232.05+0.54%ASML921.40+1.24%TSMC214.68+1.15%Costco904.22-0.35%MercadoLibre2,140.50+1.34%Berkshire486.90+0.21%Novo Nordisk88.34-1.58%S&P 500612.44+0.36%Nasdaq 100559.12+0.70%Dow 30448.76-0.19%Russell 2000232.05+0.54%ASML921.40+1.24%TSMC214.68+1.15%Costco904.22-0.35%MercadoLibre2,140.50+1.34%Berkshire486.90+0.21%Novo Nordisk88.34-1.58%

The research letter

Serious research for the price of two coffees.

One monthly price. Every note, every letter, the whole archive. No upsells, no premium tiers inside the premium tier, and no performance theatre.

What is included

  • Every research note, in full

    Each note states the thesis, the risks, the numbers we track and the exact conditions that would make us sell.

  • The weekly letter

    One issue every Monday: what changed in the portfolio, what we refused to change, and one idea worth thinking about.

  • The complete archive

    Every issue and note we have published, searchable and readable on any device, including the ones we got wrong.

  • Model portfolio notes

    Position sizing, watchlist reasoning and the sell discipline we actually apply — no price targets, no hype.

  • The free market wire

    Included for everyone, subscriber or not: the investing news feed and its public JSON API stay free forever.

Try before you pay

One full research note and one full letter are open to everyone, permanently.

Read the free research note →Read the free letter →

Questions

What exactly am I paying for?

Research and education: full equity research notes, the weekly letter and the archive. You are paying for the analysis, not for signals or a managed account.

Can I cancel?

Yes, in two clicks from your account page, and access continues to the end of the period you already paid for. There is no annual lock-in and no cancellation call.

Is this personal investment advice?

No. Marketshare Investing is not a registered investment adviser and does not manage money. Everything published is general commentary and education. Position sizing and suitability are your responsibility.

Do you publish price targets or performance claims?

We publish stances, conviction and the reasoning behind them. We do not publish price targets, and we do not present simulated or back-tested figures as performance.

How does billing work?

Card payments are processed by Stripe. The subscription renews monthly until you cancel, and you can update your card or download invoices from the billing portal.

Do you sell my email address?

No. We use your account email to deliver the letter and manage billing, and nothing else.