Direct Answer
The level of an equity index divided by the level of a bond index, usually on a total-return basis. It tracks the relative performance of stocks versus bonds over time. A rising ratio means stocks are outperforming bonds, typical of risk-on, growth-friendly periods, and a falling ratio means bonds are outperforming.
Equity/Bond Ratio: Formula, Meaning, Signals, Examples and How to Use It
How Is Equity/Bond Ratio Calculated?
The level of an equity index divided by the level of a bond index, usually on a total-return basis. It tracks the relative performance of stocks versus bonds over time.
Formula: Equity/bond ratio = equity total return index / bond total return index
Inputs:
- Equity total return index level
- Bond total return index level (for example a Treasury or aggregate bond index)
- Same dates and currency
Worked example. An equity total return index at 12,450 and a bond total return index at 3,120 give a ratio of 3.99. The inputs are illustrative numbers, not market data.
Reading it. A rising ratio means stocks are outperforming bonds, typical of risk-on, growth-friendly periods, and a falling ratio means bonds are outperforming. Trend changes are the signal, as the level depends on index base dates.
Limits. The level is arbitrary, and the ratio is sensitive to the bond index chosen (maturity and credit mix). Price-only indexes omit dividends and coupons, which distort the comparison over long periods.
What is Equity/Bond Ratio?
The level of an equity index divided by the level of a bond index, usually on a total-return basis. It tracks the relative performance of stocks versus bonds over time.
How to use Equity/Bond Ratio
A rising ratio means stocks are outperforming bonds, typical of risk-on, growth-friendly periods, and a falling ratio means bonds are outperforming. Trend changes are the signal, as the level depends on index base dates. A reading alone is never a buy or sell signal; it needs context from price structure, volume, volatility and the broader market regime.
Strengths
- Total-return indexes on both legs include dividends and coupons, so the ratio compares the full return of each asset class.
- A ratio of two index levels is cumulative relative performance directly, so its percent change equals the relative return between any two dates.
- Reproducible when the formula and data convention are fixed.
Weaknesses and limitations
- Bond index duration drifts as issuance and maturities change, so the bond leg's sensitivity to rates is not constant across the history.
- A global equity index against a US bond index mixes in exchange-rate moves, since the two legs carry different currency exposure.
- Correlated indicators can create false confidence by repeating the same underlying information.
Editorial and risk note
This page is educational content, not individualized investment advice. It should not imply guaranteed prediction, accuracy or outperformance.
Frequently Asked Questions
Is Equity/Bond Ratio a buy or sell signal?
No. A rising ratio means stocks are outperforming bonds, typical of risk-on, growth-friendly periods, and a falling ratio means bonds are outperforming. The level is arbitrary, and the ratio is sensitive to the bond index chosen (maturity and credit mix). A trade built on it still needs a trigger, an invalidation rule, a position size and realistic execution assumptions.
What is the best setting for Equity/Bond Ratio?
Equity/Bond Ratio is computed from equity total return index level; bond total return index level (for example a Treasury or aggregate bond index); same dates and currency, so the choices that matter are the data convention and the window it is read over. Test those across instruments, regimes and out-of-sample periods instead of fitting one historical winner.
Can Equity/Bond Ratio be used by itself?
The level is arbitrary, and the ratio is sensitive to the bond index chosen (maturity and credit mix). Price-only indexes omit dividends and coupons, which distort the comparison over long periods. For that reason it is read next to measures of direction, participation, valuation, liquidity and risk, not alone.
Does Equity/Bond Ratio work on every timeframe?
The calculation (Equity/bond ratio = equity total return index / bond total return index) can be run on any bar size, but behavior is not portable: a reading on a five-minute chart describes a very different market window from the same reading on a daily chart. Validate the exact timeframe before relying on it.
Why does Equity/Bond Ratio give false signals?
Bond index duration drifts as issuance and maturities change, so the bond leg's sensitivity to rates is not constant across the history. A global equity index against a US bond index mixes in exchange-rate moves, since the two legs carry different currency exposure. Lag, noise and regime changes add to this, because market participants react to new information after the reading is calculated.
How should Equity/Bond Ratio be backtested?
Rebuild Equity/Bond Ratio from equity total return index level using point-in-time data, write the rules before testing, include delisted securities where relevant, model realistic fills and costs, reserve a validation sample and compare with a simpler baseline.