Sharpe Ratio

Excess return per unit of risk. Calculated as (return - risk-free rate) divided by volatility (standard deviation of returns).

Sharpe Ratio — Excess return per unit of risk. Calculated as (return - risk-free rate) divided by volatility (standard deviation of returns).

Key facts

Category
Risk
Definition
Excess return per unit of risk. Calculated as (return - risk-free rate) divided by volatility (standard deviation of returns).
Formula
Sharpe = (Return - Risk-Free Rate) / Standard Deviation
Live example
/research/stock/VOO
Last updated
2026-06-17

Formula

Sharpe = (Return - Risk-Free Rate) / Standard Deviation

Interpretive bands

< 0
Lost money on a risk-adjusted basis.
0 – 0.5
Below par.
0.5 – 1.0
Decent.
> 1.0
Strong risk-adjusted returns.
> 2.0
Excellent. Hard to sustain over long periods.

How IndexAlpha uses Sharpe Ratio

3-year Sharpe is reported per stock and per portfolio. Especially useful for comparing strategies with different risk profiles.

See it live

The Sharpe Ratio metric shows up on every IndexAlpha research page. See it now on VOO — or research any stock to view its Sharpe Ratio.

Related terms

Common questions

What is Sharpe Ratio?

Excess return per unit of risk. Calculated as (return - risk-free rate) divided by volatility (standard deviation of returns).

How is Sharpe Ratio calculated?

Sharpe = (Return - Risk-Free Rate) / Standard Deviation

How does IndexAlpha use Sharpe Ratio?

3-year Sharpe is reported per stock and per portfolio. Especially useful for comparing strategies with different risk profiles.

Sources