A trading journal is a record of every trade and the thinking behind it. Many experienced traders say it is the single habit that improves results most.
What to record
- Date, stock, entry price, stop and target.
- The reason for the trade in one or two sentences.
- Position size and how much you risked.
- The exit price and the result.
- How you felt before and after.
How to review
Once a week, read the entries. Look for patterns. Do you sell winners too early? Chase moves after they have started? Break your own rules after a loss?
Track simple numbers
After 30 trades, calculate your win rate, average gain, average loss and the largest mistakes. These tell you what to fix.
Keep it easy
A notebook or simple spreadsheet is enough. The best journal is the one you actually fill in.
What to record
For every trade, write down the date, the company, the price, the number of shares and your reason for buying. Add your loss limit, your target and what would make you sell. After the trade ends, record the result and what you learned. Keep it short so you actually do it.
A simple template
Date. Stock. Why I bought. Entry. Stop. Target. Size and the dollars at risk. How I felt. What happened. What I will do differently. A spreadsheet or a notebook works fine.
Review once a month
Look for patterns. Do you sell winners too early? Hold losers too long? Break your size rule after a win? Count how often you followed your plan and how those trades did compared with the ones where you did not.
Why it helps
Memory is selective. A journal shows what really happened. It also slows you down before you act, which helps with emotional decisions.
Tools to pair with it
Use the position size calculator before each trade and note the result in your journal. Our risk management guide explains how to set limits.
Frequently asked questions
How long should I keep a journal?
For as long as you invest. The patterns get clearer over time.
Should I include trades that lost money?
Yes. Those are the most useful.
Keep learning about trading journal
Reading is a start, practice makes it stick. Run the numbers in our investor tools, test yourself in Stock Jeopardy, or follow the start here guides to see what to read next after trading journal.
Further reading: Investor.gov from the U.S. SEC and the Canadian Securities Administrators investor education site offer free, independent guides for new investors.
A worked example with ten trades
Numbers turn a journal into a teacher. Say you log ten trades. Six are winners and four are losers. The winners gained $40, $55, $30, $25, $60, and $50, a total of $260, so the average win is about $43. The losers lost $35, $70, $45, and $90, a total of $240, so the average loss is $60. You won 60% of the time, which feels good. But total profit is only $20, because your average loss is bigger than your average win.
That is a clear finding. The fix is not about picking better stocks. It may be about cutting losses sooner, or not holding the trades that slide. Without the journal, you would only remember the wins. Position sizing helps too. If you risk a fixed dollar amount per trade, one big loss cannot wipe out many small wins. The stock profit and loss calculator is a quick way to check each trade.
Ratings for your own process
Besides results, rate how well you followed your plan. After each trade, give yourself a score from 1 to 5 for how closely you stuck to your rules. A losing trade with a score of 5 is a fine trade that did not work. A winning trade with a score of 1 is luck that may not repeat. Over time, you will see whether good process leads to better outcomes. That is hard to see without writing it down.
Feelings are data
Writing down how you felt may seem soft. It is actually useful. Many people notice that their worst trades came after a loss, when they felt a need to win it back. Others see that they sell winners early when they feel nervous. Once you spot the feeling, you can plan for it. A simple rule such as waiting one day before any new trade after a loss can help.
Common mistakes
- Recording only the winners.
- Skipping entries when busy, then guessing later.
- Making the form so long that you stop using it.
- Never reading what you wrote.
A tidy review routine
Pick one fixed time. Many people use Sunday evening. Read the week’s entries, circle one pattern, and write one change for next week. Once a month, add up your numbers. Keep each change small. One change at a time is easier to follow, and you can see whether it helped. Your average cost basis calculator results can be pasted straight into your notes.
What to do next
Start today with a notebook or a simple spreadsheet. Write the template across the top and fill in your next trade, even a pretend one. If you want practice first, try Stock Jeopardy and log what you learn. Check the glossary for terms like stop loss and position size. For free investor education, visit investor.gov.
Questions people ask about keeping a trading journal
How long should each journal entry be?
Short is fine. A few lines on why you entered, your plan, and how it ended can be enough. A habit you keep beats a long entry you skip. You can add detail later if you find it useful. Go slowly.
Should I record losing trades too?
Yes. Losses often teach the most. Writing them down honestly helps you spot patterns, such as ignoring your plan or acting on emotion. A journal that only holds wins gives a false picture of how you really trade. Go slowly.
How often should I review my journal?
A monthly review works well for most people. Look for repeated mistakes, how often you followed your plan and whether your results match your expectations. Make one small change at a time so you can see what helps. Go slowly.
Quick recap
A trading journal records what you did and why, so you can learn from it. Keep it simple, include losses, and review it on a regular schedule. The aim is better habits, not perfect results. Check official sources if unsure.
Education only, not investment advice.
