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Updated 2025-06-04·Editorial policy·Trading system

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

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

How to use this in TradeLyser

Simulate size and streak rules; cap daily loss before optimizing entry tweaks.

Related terms

FAQ

Need exact ruin formula live?

Use as intuition for size — exact inputs drift with regime.

Ruin risk and leverage?

Higher effective leverage raises ruin — log margin use weekly.

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