Last updated: 5 October 2026 · 9 min read
By Pulkit Mangal — equity and F&O trader since 2017, founder of TradeDiary.
TL;DR: A trading diary is the part of your trading record that a broker statement can never give you: why you took the trade, how you felt, and what you'd do differently. Your broker already logs what happened. The diary logs why. Write three short notes per trade (one before, one after, one at the weekly review), keep them in the same place as the trade, and read them back every Sunday. Below are five real-format examples you can copy.
You open your P&L on a Friday night. It's red again. You scroll through the trades and you can remember almost none of them. Why did you sell that SENSEX put on Tuesday? Why did you double the size on Thursday? The tradebook tells you the price, the quantity and the time to the second. It tells you nothing about the decision.
That missing half is what a trading diary is for.
💡 Short on time? Start a free trading diary that fills in the trades from your broker, so you only write the part that matters.
1. What a "trading diary" actually is
People use "trading diary", "trading journal" and "trade log" interchangeably, but they are three different layers:
| Layer | What it records | Who can produce it |
|---|---|---|
| Trade log | Date, instrument, side, quantity, price, charges | Your broker, automatically |
| Trading journal | The log plus analysis: P&L, R-multiple, win rate, strategy tags | You, or an app, from the log |
| Trading diary | Your reasoning, emotions and lessons, written in your own words | Only you |
The first two can be automated. The diary can't, and that's exactly why it's the most valuable part.
Three things make a diary harder, and more useful, for Indian traders:
- Charges change the story. A trade that "worked" on screen can lose money after STT, brokerage, exchange charges, GST and stamp duty. On options, STT is now 0.15% of premium on the sell side (since 1 April 2026). Your diary entry should note the net result, or you'll remember a loss as a win.
- Expiry compresses decisions. Weekly index expiries push a lot of decisions into a few hours. Those are the trades you'll least remember and most need a note for.
- Positional F&O spans days. A NRML position opened on Monday and closed on Thursday is one decision spread across four days. Without a diary, the reason you opened it is gone by the time you close it.
2. Why a diary matters more than ever for Indian traders
2.1 Most F&O traders lose, and don't know why
SEBI's September 2024 study found that 93% of individual F&O traders lost money over FY22–FY24. (SEBI) A loss you can explain is a lesson. A loss you can't explain is just a cost, and you'll pay it again.
2.2 What our own data says: people log trades, not thoughts
We looked at the 15 TradeDiary accounts that logged at least 30 trades in the last six months (median account: 198 trades). Counting per account, so a few very active traders can't skew it:
- The median account wrote a reason for entering on 0.1% of its trades.
- 7 of the 15 never wrote a reason at all.
- Only 3 of the 15 wrote one on at least half their trades.
So nearly everyone keeps a trade log, often imported automatically, and almost nobody keeps the diary. (Small sample: 15 accounts. It's a picture of habits, not a claim about returns.)
2.3 Your memory edits the record
Memory over-weights the vivid trades and quietly forgets the boring rule breaks. A diary written at the time is the only version of events your future self can't rewrite.
2.4 It's the only edge that compounds
Algorithms test every signal. A discretionary trader's edge is learning faster than last month's version of themselves. That learning needs raw material, and the diary is that material.
3. The framework: what goes in a diary entry
Seven fields cover almost everything. Keep each one to a sentence.
| # | Field | When | Why it matters |
|---|---|---|---|
| 1 | Setup | Before | Names the pattern, so you can count how often it works |
| 2 | Why now | Before | Forces a thesis; "it looked good" doesn't count |
| 3 | Plan (entry, stop, target, size) | Before | Lets you compare what you did with what you planned |
| 4 | Feeling (calm / FOMO / revenge / bored) | Before | Emotional state is the strongest predictor of rule breaks |
| 5 | What happened | After | Facts only, including net P&L after charges |
| 6 | Did I follow the plan? | After | Yes / no, and if no, where |
| 7 | Lesson | After or weekly | One sentence you'd tell yourself next time |
Leave the numbers (prices, quantities, P&L) to your broker data or your journal app. The diary is for the parts no machine can write.
4. How to keep a trading diary that lasts past week two
- Write the "before" note before you place the order. Thirty seconds: setup, why now, plan, feeling. If you can't write the reason, don't take the trade.
- Write the "after" note the same day. What happened, whether you followed the plan, net result.
- Keep it next to the trade. A diary in a separate notebook drifts away from the numbers. Notes attached to each trade can be filtered later ("show me every trade where I felt FOMO").
- Use the same words every time. "Breakout", not "BO" one day and "range break" the next. Consistent tags are what make patterns countable.
- Review weekly, not daily. Every Sunday, read the week's entries and write one paragraph: what worked, what didn't, one rule for next week.
- Count, don't just read. After 20–30 entries, count outcomes by setup and by feeling. That's where the diary pays off.
5. Trading diary examples
Five entries in the format above. The traders are composites, but the formats, contracts and numbers are realistic.
Example 1: Intraday NIFTY option (planned trade)
Setup: Opening-range breakout, NIFTY above the first 15-minute high. Why now: Broke the range on rising volume; global cues positive. Plan: Buy 1 lot of the at-the-money call at ₹118, stop ₹96, target ₹160, exit by 2:30 pm. Feeling: Calm. What happened: Hit ₹151 by 11:40; exited at ₹149 (1 lot = 65). +₹2,015 gross, about +₹1,960 after charges. Followed the plan? Mostly. I took profit before the target because I got nervous. Lesson: I keep exiting winners early. Next time, trail the stop instead of closing.
Example 2: Positional SENSEX option sale (NRML, held three days)
Setup: Sell an out-of-the-money put after a sharp fall, expecting a range. Why now: Implied volatility elevated after a gap down; support visible. Plan: Sell 2 lots (40 units) at ₹262, stop at ₹400, buy back at ₹90 or on expiry day. Feeling: Slightly anxious; the market was still falling. What happened: Day 2 the market fell further; the premium touched ₹385. Day 3 it recovered; bought back at ₹281.40. −₹776 gross, about −₹830 after charges. Followed the plan? Yes. The stop wasn't hit. Lesson: The plan was fine; the timing wasn't. Wait for the fall to pause before selling premium.
Example 3: MCX crude oil option (evening session)
Setup: Buy a call ahead of US inventory data. Why now: Crude held its weekly support twice. Plan: Buy 2 lots (200 barrels) at ₹271, stop ₹240, exit before the session closes. Feeling: Bored. It was 9 pm and I wanted action. What happened: Data came out flat; exited at ₹279.50. +₹1,700 before charges, which I hadn't checked. Followed the plan? Yes, but the reason was weak. Lesson: "Bored" trades need a smaller size or no trade at all.
Example 4: Swing equity (delivery)
Setup: Pullback to the 20-day average in an uptrend. Why now: Third test of the average; results due in two weeks. Plan: Buy 40 shares at ₹1,650, stop ₹1,615, target ₹1,760. Feeling: Calm. What happened: Exited at ₹1,702 after five days. +₹2,080 gross, about +₹1,930 after charges. Followed the plan? No. I sold before the target on one red day. Lesson: Same as Example 1. This is now a pattern, not a one-off.
Example 5: The losing trade (the one that matters most)
Setup: None. I was trying to win back the morning's loss. Why now: I was angry about the earlier stop-out. Plan: No stop. Double the usual size. Feeling: Revenge. What happened: −₹6,420 in 25 minutes. Net loss for the day tripled. Followed the plan? There was no plan. Lesson: After a stop-out, no new trade for 30 minutes. Written on a sticky note on the screen.
What the week's review said: Two of five entries say "exited a winner early". One "bored" trade, one "revenge" trade, and the revenge trade cost more than the other four made together. That is the whole value of the diary: the numbers alone would have shown a bad Thursday, not a habit.
6. Common mistakes
- Writing only after losses. You learn as much from winners you managed badly. Write every trade.
- Writing the reason after the result. It turns into a story. Write it before you click buy.
- Long essays. Nobody keeps that up. One sentence per field is enough.
- Keeping it separate from the trades. A notebook you can't filter by setup or feeling becomes a memoir, not a tool.
- Never counting. Reading entries feels useful; counting them is what changes behaviour.
- Ignoring charges. A diary that records gross P&L will tell you a losing setup works.
7. How TradeDiary helps
You can keep a trading diary in a notebook or a spreadsheet, and our free trading journal Excel template already has the "why I entered" and "what I'd do differently" columns. If typing every trade by hand is what stops you, TradeDiary imports trades from Zerodha, Kotak, Upstox, Dhan and other brokers, so each trade is already there with its net P&L. You add the diary notes (reason, emotion before and after, mistakes, a discipline rating) and filter by any of them later.
→ Start your trading diary free — no card needed.
You may also like: how to build a trading journal template, a trader mindset journal and how to keep one, the psychology of revenge trading, or Excel vs a trading journal app. For the complete picture, start with the trading journal India guide and the trading psychology handbook.
Frequently asked questions
What is a trading diary?
A trading diary is a written record of why you took each trade, how you felt, and what you learned from it. Your broker's trade log records what happened; the diary records the decision behind it. It's usually kept alongside the trade log or inside a trading journal.
What should I write in a trading diary?
For each trade, write the setup, why you entered now, your plan (entry, stop, target, size), how you felt, what happened (including net P&L after charges), whether you followed the plan, and one lesson. One sentence per field is enough.
Is a trading diary the same as a trading journal?
Not exactly. A trading journal usually means the trade data plus analysis (P&L, win rate, R-multiple). A trading diary is the written part: reasoning, emotions and lessons. The most useful setups combine both, so you can filter your notes by results.
How often should I review my trading diary?
Write entries on the day of each trade, and review them once a week. After 20 to 30 entries, count your results by setup and by feeling; that's where patterns such as early exits or revenge trades become obvious.
Should I keep a trading diary in Excel or an app?
Excel or Google Sheets works if you trade a few times a week and are disciplined about entering trades. An app is easier once you trade daily or use more than one broker, because the trades import automatically and you only write the notes.
Risk disclaimer
This article is for educational purposes only and is not investment advice. Trading in equity, derivatives and commodities carries substantial risk of loss. SEBI's September 2024 study found that 93% of individual F&O traders incurred losses between FY22 and FY24. The diary examples are illustrative composites, not recommendations. Trade only with money you can afford to lose, and consult a SEBI-registered investment adviser for personal advice.
Author: Pulkit Mangal — founder of TradeDiary; equity and F&O trader since 2017.
Last updated: 5 October 2026.