How to read max drawdown without spiralling
Drawdown is a dip in a curve you already lived through. Depth is half the story; duration is the other half.
Everybody quotes drawdown. Very few people define it out loud.
Max drawdown is the largest fall from a high-water mark in your cumulative closed P&L, before the curve made a new high. You can be up for the year and still be sitting inside an ugly one.
The picture is the definition
Plot cumulative closed P&L. Find the highest point so far. Measure down to the lowest point that comes after it. That gap, in rupees, is the drawdown.
Notice what it ignores: open positions, margin stress, and how you felt. It is a bookkeeping measure of a path, nothing more.
Peak-to-trough is ₹41,000 and it took six sessions to make. Illustrative journal data, not a live book and not a performance claim.
Depth and duration are different injuries
A sharp fall that recovers in four sessions teaches you about volatility. A slow grind that lasts nine weeks teaches you about your patience, your rules, and whether you kept trading a setup that had stopped working.
A journal that only prints the rupee depth is throwing away half of what happened. Store both.
Use it as a bookmark, not a prophecy
A new low does not owe you a bounce. The useful move after a trough is boring: open those calendar days, read what you wrote, count the rule breaks, look at whether size grew while the curve fell.
That is the whole exercise. Then close the laptop.
Key takeaways
- Drawdown is measured peak-to-trough on closed P&L.
- Record rupee depth and the number of sessions it lasted.
- The value is in the days inside the dip, not the headline number.
Not advice, not a call. NiyataBook is a personal trading journal, not a SEBI-registered investment adviser or research analyst. Everything above looks backwards at trades that already closed. What happened in a book does not promise what happens next, and F&O can take a year’s savings in a week.