RESEARCH • RECORD • REVIEW

Stock investment thesis template with a worked example

Turn a vague stock idea into a dated thesis with sources, opposing evidence and an explicit review question.

Published by StocksDiaries · Updated September 20, 2026. Educational examples, not personalized investment advice. Prepared with AI assistance; no claim of independent expert review.

A stock thesis is a claim you can revisit. “This is a good company” is too broad to test. A more useful record explains the business change you expect, the evidence behind that expectation and what would weaken it. This template focuses on the research record; it does not tell you whether to buy a stock.

Copy the thesis template

Company and ticker:
Date; research or actual holding:
Business in one sentence:
My specific hypothesis:
Evidence: metric / period / source / page:
Assumptions that are not established facts:
Strongest opposing explanation:
Valuation question I still need to answer:
Evidence that would weaken the thesis:
Next review date or information event:
Unresolved questions:

Use the “research or actual holding” field to keep observation separate from ownership. You do not need to purchase shares to practice a clear thesis. If an entry relates to a holding, keep actual transaction details separate from the research claim so that you can review each accurately.

A fictional example: growth with a complication

Imagine a fictional company whose annual revenue rises from 100 to 108 units while its operating margin falls from 12% to 11%. Revenue growth is 8%, but that fact alone does not support a claim that profitability improved. Using those fictional inputs, operating profit changes from 12 to 11.88 units. The example illustrates why related metrics belong together.

A careful thesis entry could read: “My working hypothesis is that revenue growth can eventually improve operating profit, but the latest period does not show that improvement. I need to understand whether the lower margin reflects temporary investment or continuing pressure.” This preserves uncertainty instead of turning a hopeful explanation into a fact.

The opposing case might be that discounts are supporting sales while weakening economics. The next review question could be whether the company provides evidence about pricing and costs. An unresolved valuation question might be how much future improvement the current share price already assumes. This entry is still incomplete as an investment decision, and it should say so.

Where to find supporting documents

For US reporting companies, SEC EDGAR offers free access to filings. Annual and quarterly reports contain financial statements; current reports disclose certain events between reporting periods. Investor.gov explains how to research investments using EDGAR. Save the document date, reporting period and location of the evidence in your entry.

A source link is only the beginning. State exactly what it supports. A revenue table may support a growth calculation without supporting your explanation for that growth. Keep company statements, your own calculations and your interpretation in separate sentences.

Preserve the original version

When new information appears, add a dated update rather than replacing the initial claim. Your review then has a fair comparison point. If the evidence remains mixed, record that; a journal does not require every question to end with a confident conclusion.

How detailed should the first entry be?

Start with one hypothesis, one supporting source, one serious counterargument and one review question. Expand only where a missing detail prevents later evaluation. For more background, read how to write a stock investment thesis. Use this template when you are ready to create the actual record.