Ask yourself why you sold BHP.AU three months ago and you will produce an answer in about two seconds. Check the record and the answer is often different, because the version you just produced was assembled after you knew the result. A trading journal is the only place the two versions can be compared, and the comparison is the point of keeping one.
What a trading journal is
A trading journal is a record of each trade, written close to the time you took it. The fields: the prices, the size, the stop, the reason you entered, the state you were in, and what you concluded afterwards. The prices come from your broker. Everything else exists only if you write it.
Why the journal gets skipped
It takes time per trade. True, and the time is the reason to keep the fields short. A journal you complete in a minute and read every week beats one you designed in an afternoon and abandoned in a fortnight.
The data entry is dull. Import handles the prices, dates and sizes. What is left is the part that needs you: why you entered and what you did while the position was open.
You remember your trades. You remember a version. The version you remember was edited by the outcome, which is exactly the bias the written record exists to catch.
It is uncomfortable. This is the honest objection. A journal puts the trade you would rather not discuss next to the trades you would, on the same page, with the same columns.
What a trading journal shows you
Which setups pay. Group your closed trades by the strategy you took them from and read win rate and average R-multiple for each. Two strategies with the same win rate can pay differently, so read both figures.
How your state maps to your results. Tag the emotion at entry and exit and the tags start carrying totals. That total is a fact about you, not a claim about traders.
Which rules break, and when. Score each trade against the rules you wrote before it. The rule that breaks most often, and the market conditions it breaks in, are the two things worth knowing.
What repeats. One bad exit is an event. The same bad exit six times is a rule waiting to be written.
Whether you did what you said. The plan states what you will do and the journal states what you did. Holding the two side by side is the whole of accountability, and it works without anyone else reading either one.
What to record in your trading journal
The trade itself
Date and time, ticker as TICKER.EXCHANGE (BHP.AU, AAPL.US), entry price, exit price, stop, position size, fees, and the result in both dollars and R-multiples. Most of this comes out of a broker export.
The reason
The strategy you took the trade from, the criteria that were met, the levels you were watching, and the reward-to-risk you calculated before the order. Written before the outcome, this is the part with evidential value.
The state
How you felt going in and coming out. Two words is enough if two words are what you will write.
The execution grade
Did you follow the entry rules? Was the size the size your rule produced? Did the stop stay where you put it? Did you exit where you said you would? A tick against each rule is faster than a score out of ten and produces a percentage you can chart.
The conclusion
What you learned, what you would do differently, and one action item. Keep the action item to one, because a list of five is a list you will not read.
How to review your trading journal
The intervals below are an example. Set your own and put them in the calendar.
Daily, five minutes. Read back today's trades. Note any rule you broke and the state you were in. Write tomorrow's watchlist.
Weekly, thirty minutes. Calculate win rate and average R-multiple for the week. Read your worst trade in full. Set one thing to do differently.
Monthly, an hour or two. Full statistics against the previous months. Group by strategy. Decide whether any rule changes, and write the change down with the date.
Quarterly, half a day. The whole record. Are the strategies still the ones you are trading? Does the plan match what the journal says you do?
Questions to ask the journal
On performance. What is my win rate this period? My average R-multiple? My expectancy per trade? How does each compare with the previous period?
On patterns. Which strategy carried the results? Which day or holding length shows up in the losses? What is the single most repeated mistake?
On improvement. Which rule do I break most? What one change would move the largest number in this list? Is the plan I am following the plan I wrote?
Choosing a trading journal tool
A spreadsheet. Free, and yours. You write the formulas, you maintain them, and the charts are whatever you build. Fine for the first handful of trades, and for anyone who needs full control of the calculations.
Journal software. Imports, statistics and charts arrive built. You pay for it, you learn its model, and you accept its definitions of win rate and expectancy rather than writing your own.
Swingfolio. Built around swing trades: strategies with rules attached, R-multiples, emotion tagging and a set of behavioural cards. Same trade-offs as any software, plus one specific to it: the emotion tags and the rule ticks are fields you fill in, so those cards stay empty until you do.
Both. Software for the numbers, a notebook for the sentences. Common enough to be worth mentioning, and it costs nothing to try for a month.
Common trading journal mistakes
Waiting for the right system. The first version needs three fields: what you did, why, and what happened. Add columns when a review asks for one.
Logging selectively. A journal of your good trades is a marketing document. The trades you skip logging are the ones that carry the information.
Recording and never reading. Data with no review is a hobby. The review is where the journal pays.
Editing the reason after the result. Write the reason before the trade closes, or accept that the field is worthless.
Stopping at three weeks. Pick a number of trades rather than a number of days, and hold to it long enough for the averages to mean something.
Building the journaling habit in four weeks
Week 1. Three fields per trade: entry and exit prices, the result, and one sentence on why you entered.
Week 2. Add the emotion at entry and exit.
Week 3. Add the rule ticks. Note which rule you broke when you broke one.
Week 4. Add the reviews: five minutes at the end of each day, thirty at the end of the week.
At the end of the month you have a journal with the fields that matter and a habit that survived four weeks of the market.
What Swingfolio records and what you write
Import brings in the numbers. The trade importer takes a broker CSV and walks named steps: Upload, Review required, Matched closes, Open positions, Reconcile cash, Save. It reads your header row, proposes a mapping for ticker, date, price, quantity, fees and direction, and pairs buys against sells into closed trades. The rows it cannot pair on its own go to the Review required step for you to resolve.
The trade record holds the rest. Entry and exit emotion are fields on the trade form, with nine states to pick from. Attach a strategy and its entry rules appear as a checklist on the trade form, its exit rules on the open position, each with an "Adherence" bar showing the percentage you ticked. Notes have their own field, and the close dialog and the Reflection panel's Edit tags on a trade's detail page take success and failure tags.
Reflection comes as a form with named questions. Open a closed trade's detail page, choose Add reflection in the Reflection panel, and the form asks four. They are "How did you feel about this trade?", "What went well?", "What could be improved?" and "Lessons learned". Below those sits an Action Items list, and above them a button labelled "Get AI-Assisted Reflection Prompts".
The analytics read it back. The performance card carries Win %, PF for profit factor, Expect for expectancy, Trades and Avg Hold. The "Behavioral Insights" card lists "What Works" and "What Hurts" from the factors you tagged, with a "Generate AI Insights" button above them. The "Behavioral Finance Score" card's "Rule Compliance" bar is scored from the percentage of your last 30 closed trades where every entry rule was ticked.
None of the behavioural cards fill themselves in. The prices arrive from your broker; the reasons and the emotions arrive from you, which is the half of the journal that answers the questions the numbers cannot.
Log your next trade with the reason written before you know the outcome. Start the 30-day trial.