Somebody in a Telegram group sends you a screenshot. One trade, ₹42,000 profit, green everywhere. It looks like proof. It is not proof of anything at all.
There is a single number that tells you far more than any screenshot ever will, and it takes about thirty seconds to calculate. It is called the profit factor.
Take every trade you have made over a period. Add up the money from all the winners. That is your gross profit. Add up the money lost on all the losers, as a positive number. That is your gross loss.
Profit factor = gross profit ÷ gross loss.
That is it. No software needed. A spreadsheet column and a division.
Say you took ten trades on SENSEX weekly options over two expiries. Four made money, six lost money.
| Count | Total | |
|---|---|---|
| Winners | 4 | ₹80,000 |
| Losers | 6 | ₹50,000 |
Gross profit ₹80,000 ÷ gross loss ₹50,000 = profit factor 1.60.
Notice what just happened. This trader lost on 60% of their trades. Their win rate is a miserable-sounding 40%. And yet for every ₹100 the market took from them, they took ₹160 back. The screenshot culture would call this trader a failure. The arithmetic calls them profitable.
A screenshot is one row out of a table. Profit factor is the whole table.
Every trading account that is not a flat line contains some window where things went well. Pick your window carefully enough and you can make almost any account look like a machine. That is why a screenshot is not evidence — the person choosing the crop is the person being evaluated.
Think of a vada pav stall. The owner does not judge the business on the day a college group turned up and bought forty plates. He knows the number that matters: total money taken in over the month, divided by total money spent on potatoes, pav, oil, gas and rent.
If that ratio is 1.60, the stall works. If it is 0.85, the stall is quietly eating his savings no matter how many good afternoons he can remember. Trading is the same business with a worse memory — the good afternoons are the ones we screenshot, and the bad ones are the ones we scroll past.
A profit factor is only as good as the set of trades behind it. Four things decide whether it means anything.
Export your trades from your broker. Two columns: date and realised P&L. Sum the positive numbers. Sum the negative numbers and drop the minus sign. Divide the first by the second.
Whatever comes out is the honest version of your trading. If it is below 1.00, no screenshot from your best week changes that. If it is above 1.00, you already have something worth measuring properly — and you never needed anyone else's green screenshot to tell you so.