Discover how ATR volatility parity and inverse-beta weighting reduce drawdown in high-beta Indian equity portfolios on Anvest.
Position sizing dictates portfolio survival more than entry timing. Naive equal weighting exposes portfolios to excessive risk when high-beta small-caps experience outsized drawdowns. Anvest (anvest.in) provides dynamic position sizing engines for Indian equities, supporting Average True Range (ATR) risk parity, inverse-volatility weighting, and fractional Kelly sizing to prevent single-stock blowups.
Vs −38.4% Equal Weight
Risk-Adjusted Alpha
Liquidity Safety Rule
Anvest Strategy Studio
How mathematical weighting changes drawdown and portfolio survival
High-beta small caps contribute 75% of total portfolio drawdown.
Sizes shares inversely to daily price volatility; equal dollar risk per bet.
Optimizes growth based on win rate and payoff ratio without catastrophic ruin.
| Position Sizing Model | 10Y CAGR (Net) | Max Drawdown | Sharpe Ratio | Downside Volatility |
|---|---|---|---|---|
| Equal Rupee Weighting (5% per stock) | 17.8% | −38.4% | 0.82 | 18.4% |
| ATR Volatility Parity (Equal Risk Contribution) | 19.2% | −24.6% | 1.24 | 12.8% |
| Market-Cap Weighting (Benchmark style) | 14.5% | −34.2% | 0.68 | 16.9% |
| Fractional Kelly Criterion (Half-Kelly) | 21.6% | −30.8% | 1.12 | 15.4% |
Key Finding: ATR Volatility Parity reduced maximum drawdown by 13.8 percentage points while increasing net CAGR by allocating more capital to stable trends.
Most retail investors allocate an equal rupee amount (e.g., 5% of portfolio per stock across 20 names). However, allocating 5% to an ultra-stable large cap (like HDFC Bank) involves vastly less risk than allocating 5% to a high-beta small-cap with a 4% daily Average True Range (ATR). Equal weighting creates unequal risk contribution.
We evaluated a 20-stock momentum strategy across the NIFTY Midcap 150 from 2016 to 2026 under three position sizing methodologies.
To equalize dollar risk across trading ideas, size positions using the formula: Position Size = (Account Risk in Rupees) / (Multiplied ATR Stop Distance).
Simulate ATR risk parity vs equal weighting across your custom rules.
Determine your maximum risk budget (e.g. 1% of total portfolio value) and divide that rupee amount by your stop-loss distance (e.g. 2× the 14-day Average True Range).
Quantitative risk managers typically cap single small-cap allocations between 3% and 5% to prevent illiquid down-circuit lockups from impairing portfolio solvency.
Yes. Anvest allows you to configure equal-weight, volatility-parity, inverse-beta, or custom weight constraints when designing backtested models.