Investment Thesis Template: One Page for Any Stock

An investment thesis is a short written answer to one question: why do I own this stock, and what would make me sell it? The template below fits on one page, has nine fields, and works for a first position or the twentieth. Copy it, fill it in before you buy, and keep it where you will see it again.

TL;DR

• A good thesis states the business, the reason the price is wrong, the evidence, the risks and the exit conditions, in plain sentences.
• The most useful field is the one most people skip: kill criteria, the specific facts that would prove you wrong.
• Set a margin of safety and a review date in writing, so the price and the calendar make the decision rather than your mood.
• Keep it to one page. If you cannot explain the idea in a few bullets, you probably do not understand it yet.

Table of Contents

• What an investment thesis is (and what it is not)
• The investment thesis template
• Fields 1 to 3: the business and the one-sentence thesis
• Field 4: evidence you can check
• Field 5: the moat
• Field 6: valuation and margin of safety
• Field 7: risks
• Field 8: kill criteria
• Field 9: position size and review date
• A worked example
• Our perspective: write it before you buy, and score it with rules
• Where Oracle fits in your process
• FAQ
• Sources

What an investment thesis is (and what it is not)

A thesis is not a price target and it is not a hunch with a ticker attached. It is the chain of reasoning that connects a business, a price and a time horizon. Professional write-ups follow the same logic. The student stock-pitch memo from Notre Dame's Smart Woman Securities, one of the pages that ranks for this topic, asks for 3 to 5 brief bullet points on why a stock deserves a position, and nothing longer. Brevity is the point: it forces a choice about what matters.

For an individual investor, the thesis does three jobs:

1. It slows you down before you buy. Writing "the stock is cheap" is easy. Writing what it is cheap relative to, and why the market is wrong, is not.
2. It gives you a test later. When the stock falls 20%, you can ask whether the thesis broke or only the price moved.
3. It keeps you an owner rather than a trader. Li Lu, the investor and Charlie Munger associate, draws the line between speculating and investing in how you think about the asset: investors see themselves as owners of a business, not holders of a piece of paper. A written thesis is how you practice that.

What it is not: a prediction you must defend forever. A thesis is a hypothesis. It earns its keep by being checkable.

The investment thesis template

Copy this into a document or notes app. Each field has a prompt and a rule for how to answer it.

The next sections walk through each field, with the common mistakes.

Fields 1 to 3: the business and the one-sentence thesis

Start with the business, not the stock. Write two sentences a friend would understand: what the company sells, who buys it and why they keep buying. Li Lu advises building a circle of competence around businesses you are actually interested in, since everyone's circle will be different. If you cannot finish field 2 without borrowing a news headline, stop here.

Then write the thesis as a single sentence with a built-in "because". Compare two versions:

• Weak: "This is a great company with strong growth."
• Useful: "This company earns high returns on its capital and sells a product customers rebuy every year, and its shares trade below what those earnings are worth because investors are worried about one slow quarter."

The second version names a mispricing and a reason for it. That is what separates an investment thesis from an opinion that a company is good. Good companies can be bad investments at the wrong price.

Field 4: evidence you can check

Evidence means numbers that appear in a company's reported financial statements, not forecasts or commentary. Pick three to five and say what each shows:

• Profitability: operating margin, return on equity or return on invested capital, and whether they hold up across several years rather than one.
• Valuation: price-to-earnings, price-to-free-cash-flow or price-to-book, compared with the company's own history and with direct peers.
• Financial health: debt relative to earnings and cash, and whether interest is comfortably covered.
• Growth: revenue and earnings trends, with attention to whether growth is paid for by taking on debt.

If you want a structured way to gather these, our 10 step fundamental analysis checklist lays out the order we work in, and the guide to financial health analysis covers debt and cash flow in more depth. Comparing against peers matters as much as the raw ratio, so keep our stock comparison checklist handy.

And if you hold or are weighing digital assets as well, the same discipline of checking before committing applies there; this crypto portfolio checklist is a useful reference for that side of a portfolio.

Field 5: the moat

Profits attract competitors. The moat field asks what stops them. Write the source in a few words (switching costs, brand, scale, network effects, regulation) and then write one sentence on how it could weaken. A moat you cannot describe or test is a story, not a moat. We cover a scoring method in our practical moat analysis guide, which turns the idea into a few questions you can answer from reported results.

Field 6: valuation and margin of safety

This field turns a good company into a good purchase. Write down three things:

1. Your estimate of value, as a range, not a single number.
2. The maximum price you will pay, below that range.
3. The gap between the two, which is your margin of safety.

Li Lu's reasoning for the gap is simple: valuing any asset means predicting the future, and the future is hard to predict, so you leave yourself a margin of error. Professional managers state it as a rule. Loomis Sayles describes a margin of safety as a disciplined approach to buying great companies at a meaningful discount, and cites a minimum of 2:1 anticipated upside to downside. The same document is clear that it is not a guarantee of safety, because every investment carries risk. Value investing has long rested on this idea; Columbia Business School's account of Benjamin Graham's approach, as explained by Professor Bruce Greenwald, frames it as the process for finding stocks worth buying. For the full idea in plain terms, read what a margin of safety is.

A practical test: if your upside case is a 30% gain and your downside case is a 30% loss, you do not have a margin of safety, you have a coin flip with fees.

Field 7: risks

List the two or three most plausible ways the thesis fails, ranked by likelihood. Typical categories:

• Business risk: a competitor, a lost customer, a product that ages.
• Balance sheet risk: debt that comes due when credit is expensive.
• Valuation risk: you paid for a recovery that arrives but is smaller than hoped.
• Your own risk: the position is too large for you to hold through a drop.

Do not write "the market could fall". That is true of every stock and tells you nothing about this one.

Field 8: kill criteria

This is the field that makes a thesis more than a diary entry. Kill criteria are events that, if they happen, mean the reason you bought no longer holds. Write them before you own the stock, when you are calm. Good ones are measurable:

• "Operating margin falls below X% for two consecutive years."
• "Debt exceeds Y times annual operating earnings."
• "Management makes a large acquisition outside its core business."
• "The stock reaches my estimate of value" (a sell trigger on the upside).

Notice that "the price drops 15%" is not on the list. A price drop alone tests your nerve, not your thesis. If the facts are unchanged and the price is lower, the margin of safety has widened and the question is whether you are right about the facts. Some newer tools, such as the fill-in templates for stock investors, also stress recording what would invalidate a position and when to review it, which is the same habit in a different format.

Field 9: position size and review date

Write how much of your portfolio the position will be and why. Larger positions belong to ideas where you have better evidence, a wider margin of safety and a business you understand deeply. One investor's published approach to sizing aims to shift the portfolio toward higher-quality companies with higher returns, which is a reasonable principle to borrow even if you do not copy his process. Whatever you choose, decide it on paper.

Then set a review date, for example after each quarterly earnings report. At the review, you do not ask whether the price went up. You ask whether each piece of evidence and each kill criterion still stands.

A worked example

The following is a fictional company with invented figures, written only to show the format. It is not a real stock or a recommendation.

1. Company: Harbor Tools Inc. (ticker HTLS), a made-up maker of professional-grade hand and power tools.

2. Business: Sells tools to contractors through trade distributors. Contractors replace worn tools every few years and prefer a brand they trust on a job site.

3. Thesis: I own HTLS because it earns steady high returns on capital and the shares trade below my estimate of value after a weak quarter driven by a one-time inventory cleanup, which I think is temporary.

4. Evidence:

• Operating margin stable across the last five annual reports.
• Debt modest relative to operating earnings.
• Free cash flow positive every year.
• Price-to-earnings below its own five-year average and below two direct peers.

5. Moat: Brand loyalty among tradespeople and distributor relationships. Could weaken if a low-cost rival wins shelf space.

6. Valuation: My value range is X to Y per share. I will pay no more than Z, leaving a margin of safety large enough that the upside is at least twice the downside in my estimate.

7. Risks: (a) Construction slowdown reducing contractor spending. (b) A rival undercutting prices. (c) Management overpaying for an acquisition.

8. Kill criteria: Operating margin below my floor for two years; debt above my limit; any acquisition larger than a set share of the company's value; price reaching my estimate of value.

9. Size and review: Moderate position, built in two purchases. Review after each quarterly report, with the next date on my calendar.

That is about 200 words. If a thesis needs several pages, the idea is probably not yet clear enough to act on.

Our perspective: write it before you buy, and score it with rules

The most common failure we see is not a bad template, it is a template filled in after the purchase. Once you own a stock, you write evidence that supports the decision you already made. Fill in the page first, and let it say no.

The second failure is evidence that is really opinion. That is why we built Oracle around rule-based ratings grounded in reported company fundamentals, with the scoring inputs shown, rather than model-driven guesses you cannot inspect. Fields 4 and 6 of your thesis should be things you can verify line by line, and a score you can trace back to its inputs gives you that. We score over 260 stocks on profitability, valuation and financial health, which lets you compare candidates side by side before you commit to writing a full thesis on any one of them.

The third is treating the thesis as permanent. It is a working document. When the facts change, change the thesis or sell. When only the price changes, reread it.

— Matt

Where Oracle fits in your process

If you want the evidence field filled in faster, Oracle on the App Store shows each stock's fundamentals-based score and the inputs behind it, so you can compare companies and spot potentially undervalued ones without building a spreadsheet. Premium Annual adds portfolio tracking, which helps with the review step. Pricing is shown in the App Store. For method, our Buffett investing rules and beginner stock analysis guide are good places to start, and the Oracle Journal collects the rest.

FAQ

How long should an investment thesis be?

One page is plenty for an individual investor. Student stock-pitch templates ask for only 3 to 5 bullet points on the thesis itself, with the evidence elsewhere. If you need more, split the idea into evidence and risks rather than lengthening the thesis sentence.

What is a good example of an investment thesis?

A good one names the business, a reason the price is wrong and a way to be proven wrong: "I own this because it earns high returns on capital and trades below my estimate of value due to a temporary setback." The worked example above shows all nine fields filled in for a fictional company.

How is a thesis different from a price target?

A price target is one output of the thesis, usually from field 6. The thesis explains why the target is reasonable and what would invalidate it. Without the reasoning and the kill criteria, a target is just a number.

When should I sell according to my thesis?

Sell when a kill criterion is triggered, when the price reaches your estimate of value, or when you find a clearly better use of the money. A price decline alone is not a reason if the facts behind your thesis are unchanged, but it is a reason to recheck them.

Do I need a thesis for index funds?

Not in the same way. Broad index funds are held for diversification rather than a view on one company. A short written reason, covering your time horizon and what you will do in a downturn, still helps, but the nine-field template is built for individual stocks.

This article is educational and is not personalized investment advice. For decisions tied to your taxes, retirement accounts or overall financial plan, speak with a licensed financial adviser.

Sources

• Li Lu on the Holy Grail, Intellectual Honesty, and the Mutated Genes of Value Investors
• Notes From Li Lu's Latest Speech at Peking University
• Loomis Sayles, Our Growth Equity Alpha Thesis
• Columbia Business School, Greenwald Explains Value Investing Principles
• The Intellectual Investor, position sizing
• Investment Thesis Template for Stock Investors, Giroku

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