Allocate capital so each asset class contributes equally to portfolio risk, rather than using traditional 60/40 stock/bond splits. Uses leverage on low-volatility assets to balance risk across stocks, bonds, commodities, and inflation-linked securities.
History
Risk parity was conceptualized by Ray Dalio at Bridgewater Associates in 1996 as the 'All Weather' portfolio, designed to perform in any economic environment. The term 'risk parity' was coined by Edward Qian of PanAgora in 2005. The approach gained massive popularity after the 2008 financial crisis exposed the vulnerability of traditional 60/40 portfolios, which were dominated by equity risk. AQR, Invesco, and many others launched risk parity products. By 2020, risk parity AUM exceeded $200 billion. The strategy came under scrutiny during the March 2020 COVID crash when simultaneous declines in stocks, bonds, and commodities broke the diversification assumption.
How It Works
Identify 3-4 asset classes: equities, government bonds, commodities, inflation-linked bonds
Calculate the volatility (risk) of each asset class using historical or implied measures
Allocate capital inversely proportional to volatility: low-vol assets (bonds) get more capital
Apply leverage to the portfolio so that the total expected return matches a target (e.g., equity-like return with lower volatility)
The key insight: a traditional 60/40 portfolio gets ~90% of its risk from equities. Risk parity rebalances this to 25% from each of 4 asset classes
Rebalance periodically (monthly or quarterly) as volatilities change
Example Trades
Portfolio construction: target 10% annual volatility with equal risk from 4 asset classes
entry 40% in bonds (leveraged 2.5x), 20% equities, 20% commodities, 20% TIPS
exit Quarterly rebalance when risk contributions drift beyond 5% threshold
result ~8-10% annual return with ~10% vol vs 60/40's similar return with 12%+ vol
Equity vol spikes during selloff, breaking risk parity
entry Reduce equity allocation from 20% to 12%, increase bond allocation
exit Hold until next quarterly rebalance
result Portfolio drawdown limited to 60% of equity-only drawdown
Related Charts
Who Runs This
When It Works vs. Fails
works
Environments with stable, negative stock-bond correlation. Moderate growth, moderate inflation. Normal credit conditions. Most historical periods since the 1980s.
fails
Stagflation (rising inflation + falling growth) where all traditional assets decline. March 2020 liquidity crisis. Rising rate environments that hurt both stocks and bonds.
Risks
01 Leverage dependency: risk parity requires leverage on bonds/commodities, introducing borrowing costs and liquidation risk
02 March 2020 crisis: simultaneous crashes in stocks, bonds, and commodities broke the diversification assumption
03 Rising interest rates compress bond returns and break the stocks-bonds negative correlation that risk parity relies on
04 Correlated drawdowns across all asset classes during systemic events are the strategy's worst-case scenario
Research
Risk Parity Portfolios: Efficient Portfolios Through True Diversification
Edward Qian, 2005
Asness, Frazzini, Pedersen, 2012
Risk Parity: Is the Party Over?
Anderson, Bianchi, Goldberg, 2024