What is Risk of Ruin?
Risk of ruin models chance of hitting ruin given win rate, payoff, and risk per trade.
Formula
Risk of ruin = probability of losing so much you can’t continue trading
Indian market context (NSE)
Reference levels: Nifty 50 at 24,300, Reliance Industries at ₹1,300, Bank Nifty futures at 55,000 (lot size 30). Examples below show how Risk of Ruin shows up on Indian index, equity, and futures books — update to live quotes in your journal.
Nifty 50 perspective
Apply Risk of Ruin to your Nifty 50 sleeve (spot near 24,300): track the metric on closed index F&O or ETF trades over at least 30 sessions before changing rules. NSE costs and slippage on fast opens often widen the gap between spreadsheet risk of ruin and bank P&L.
Reliance Industries perspective
On Reliance (₹1,300) delivery or intraday trades, calculate risk of ruin with contract-note costs included. Single-name results can look strong on risk of ruin while your Nifty-correlated book tells the opposite — tag “RELIANCE” separately in TradeLyser.
Bank Nifty futures perspective
Bank Nifty futures near 55,000 (lot 30) amplify risk of ruin swings versus cash — one volatile session can move the metric more than a week of Nifty trades. Log margin mode (MIS/NRML) with each entry for honest review.
How to validate
- Minimum sample: 30 closed trades on one strategy tag before trusting Risk of Ruin.
- Check for one outlier week inflating Risk of Ruin — export largest winners and losers.
- Recompute Risk of Ruin after including brokerage, STT, and slippage on F&O tags.
- Compare Risk of Ruin on the same date range as profit factor and max drawdown.
How to track in TradeLyser
- Open Strategy Board or analytics → filter by strategy tag and review period.
- Locate the widget or column reporting Risk of Ruin (or export trades to compute manually).
- Store snapshot values in weekly review: Risk of Ruin, profit factor, drawdown, trade count.
- If Risk of Ruin is custom, add a spreadsheet column fed from TradeLyser CSV export.
Best practices
- Publish Risk of Ruin per strategy, not only at account level.
- Use the same calculation window (weekly vs monthly) year-round.
- Pair Risk of Ruin with sample size in every review slide or note.
- Reconcile Risk of Ruin with broker statements before tax filing.
Common pitfalls
- Changing rules after fewer than 20 trades because Risk of Ruin moved slightly.
- Mixing intraday and positional tags when computing Risk of Ruin.
- Ignoring costs so Risk of Ruin looks better than banked P&L.
- Letting one outlier trade dominate the Risk of Ruin reading.
How to use this in TradeLyser
Simulate size and streak rules; cap daily loss before optimizing entry tweaks.
Related terms
Drawdown at any moment is the gap between your latest equity peak and today’s equity. Max drawdown is the largest such gap over a period.
The Kelly criterion suggests the fraction of capital to risk when you know win rate and payoff ratio. Full Kelly is aggressive; most traders use a fraction to reduce ruin risk.
Max loss per day is a pre-set rupee or R ceiling — trading stops when hit.
Position sizing translates account risk into quantity. With a ₹2,000 risk cap and ₹40 stop per share, size is 50 shares — before lot multiples on F&O.
FAQ
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