Test a trading idea before it costs you money
LeadFinn is a free website for people who trade Indian stocks. It puts charts, a stock scanner, backtesting with every Indian charge included, and paper trading in one place, in plain words.
Why LeadFinn exists
Most trading ideas you meet online, on YouTube, Telegram or in a forum, come with a screenshot of a winning trade and nothing else. Nobody shows what happens over a whole year, on many stocks, after brokerage, STT, exchange charges, stamp duty and GST are paid. LeadFinn was started by a trader who wanted exactly that answer and could not get it without writing code.
When we ran seven of the most-searched strategies exactly as they are usually written, on the same 15 NIFTY 50 stocks for one year with one ₹1,00,000 account, the charges alone came to ₹1,96,294. That study is published in full on Strategies tested after charges. It is the kind of number LeadFinn shows you before you trade, so you can test your own version and keep the rules that work.
What you can do here
- Charts: candlestick charts for NSE stocks with indicators and drawing tools, from one-minute to monthly candles.
- Stock scanner: ready-made scans (breakouts, RSI, volume, candle patterns, smart-money setups) or your own rules, written in plain words. Every ready scan also has its own daily page.
- Backtesting: run a strategy on years of NSE data and see every trade, with charges and slippage taken out. No code needed.
- Paper trading: practise with virtual money and real charges, without risking a rupee.
- Price alerts and free calculators: brokerage, STT, position size, stock average, share profit and risk-reward.
What LeadFinn is not
- We are not a broker. LeadFinn never places a real order and never holds your money.
- We are not SEBI-registered as an investment adviser or research analyst, and we do not give buy or sell tips. A scan result or a backtest is a fact about the past, not a recommendation.
- We do not sell your data, and we do not run paid "calls", courses or signal groups.
Read the full disclaimer before you act on anything you see here.
How we keep the numbers honest
Every backtest result on this site, in the app and in our articles, comes from the same engine and the same rules. Charges follow the brokers' and exchanges' published rate cards and are rechecked by hand; trades are filled the way the major Indian and global testers fill them; and losing strategies are published as losing. The details, down to the rates and dates, are on How we test. Our writing rules are on the editorial policy page.
Who builds it
LeadFinn is built and run in India by a small independent team, led by a trader who uses it every day. There is no outside investor telling us what to promote. Everything on the site is free to use today (see pricing).
Found a wrong number, a bug or a missing feature? Write to [email protected]. We read every message and correct mistakes in public. See contact for what to include.