What Is Risk Parity?
5 min read
Most investors allocate by dollars. A "60/40 portfolio" means 60% of your money in stocks and 40% in bonds. But stocks are roughly 3-4x more volatile than bonds. So that "balanced" portfolio? About 90% of its risk comes from stocks.
In plain English: Risk parity allocates by risk contribution, not by dollars. Each asset contributes equally to the portfolio's overall volatility. The result is often smoother and more truly balanced.
The Problem with Dollar-Based Allocation
Consider a classic 60/40 portfolio:
- Stocks (60% of dollars): ~15% annualized volatility → contributes ~85-90% of portfolio risk
- Bonds (40% of dollars): ~4% annualized volatility → contributes ~10-15% of portfolio risk
When stocks crash, your "balanced" portfolio crashes almost as hard as a stock-only portfolio. The bonds barely cushion the fall because they're overwhelmed by the stock risk.
You thought you were diversified. The math says otherwise.
How Risk Parity Works
Instead of asking "how much money in each asset?", risk parity asks "how much risk from each asset?"
The algorithm adjusts weights until each asset contributes equally to the portfolio's total volatility. For a two-asset portfolio, this often means:
- Less in high-volatility assets (stocks)
- More in low-volatility assets (bonds)
A risk parity version of 60/40 might look more like 25/75 in dollar terms — but each contributes 50% of the risk.
The Bridgewater Connection
Ray Dalio's Bridgewater Associates popularized risk parity with their "All Weather" fund in the 1990s. The idea: build a portfolio that performs reasonably well in all economic environments — growth, recession, inflation, deflation.
The All Weather Portfolio typically includes:
- 30% Stocks
- 40% Long-term bonds
- 15% Intermediate bonds
- 7.5% Gold
- 7.5% Commodities
It's not pure risk parity (the exact weights are simplified), but it's inspired by the same principle: balance the risk, not just the dollars.
Advantages
- Smoother ride — drawdowns tend to be shallower because no single asset dominates
- Better Sharpe ratios — historically, risk parity has delivered comparable returns with less volatility
- Less timing dependence — works across different market regimes
- True diversification — forces you to actually use the diversification benefit, not just talk about it
Limitations (Be Honest)
- Lower absolute returns in bull markets — less stock exposure means you won't keep up when stocks are ripping
- Leverage often required — to match the return of a 60/40, you'd need to leverage the risk parity portfolio (institutional investors do this; retail usually doesn't)
- Rising rates hurt — the heavy bond allocation can struggle when interest rates rise (as we saw in 2022)
- Complexity — harder to explain to your spouse than "60% stocks, 40% bonds"
When to use it: Risk parity is best for investors who prioritize consistency over maximum growth. If you care more about avoiding big drawdowns than beating the S&P 500, it's worth exploring.
Risk Parity on FolioForecast
When you select "Risk Parity" as your optimization goal, FolioForecast calculates the weights that equalize each asset's risk contribution to your portfolio. You'll see:
- How the dollar allocation changes from your original weights
- Each asset's risk contribution (should be roughly equal)
- How the Sharpe ratio and max drawdown compare to your original allocation
The Bottom Line
Risk parity challenges a deeply held assumption: that "balanced" means equal dollars. It doesn't — it means equal risk. Whether or not you adopt it fully, understanding risk parity makes you a better portfolio thinker. It forces you to see your portfolio the way risk sees it.
See It in Action
Run a risk parity optimization on your own tickers and see how balancing risk changes the picture.
Try the Optimizer — Free →