---
title: "Bullish Percent Index: Formula, Meaning"
description: "The percentage of stocks in an index or universe whose point and figure charts currently show a buy signal. It is a breadth gauge built from chart-pattern..."
canonical: https://www.getswoopr.com/indicators/breadth/bullish-percent-index/
source: "Swoopr Investment: https://www.getswoopr.com"
---

## Direct Answer



> Bullish Percent Index is a breadth measure used to measure how widely a market move is being participated in across constituents. The production page must define the exact calculation convention before interpreting higher or lower readings, because platform and provider implementations can differ.





      


# Bullish Percent Index: Formula, Meaning, Signals, Examples and How to Use It



## How Is Bullish Percent Index Calculated?

The percentage of stocks in an index or universe whose point and figure charts currently show a buy signal. It is a breadth gauge built from chart-pattern status rather than from price versus an average.

**Formula:** `BPI = stocks on a point and figure buy signal / total stocks in the universe x 100`

**Inputs:**

- Point and figure chart status for each stock
- Constituent list for the index or sector
- Box size and reversal settings used for the charts

**Worked example.** If 312 of 500 stocks are on a point and figure buy signal, the bullish percent index is 62.4%. The inputs are illustrative numbers, not market data.

**Reading it.** A reading near 50 percent means the universe is evenly split. Chartists commonly treat readings above 70 as high and below 30 as low, and look at the direction of the line and at reversals from those zones rather than at a fixed level.

**Limits.** It depends on the point and figure settings, and the 70 and 30 levels are conventions, not rules. The index can stay high for long periods in strong trends.


      

## Indicator overview





| Attribute | Value |
| --- | --- |
| Category | Breadth |
| Asset classes | Indexes, Equity markets, Sectors, Industries |
| Output type | Ratio/index/scalar |
| Parameters | Varies by implementation; document exact settings on use |






## What is Bullish Percent Index?



Bullish Percent Index is a breadth measure used to measure how widely a market move is being participated in across constituents. The production page must define the exact calculation convention before interpreting higher or lower readings, because platform and provider implementations can differ.



For Swoopr, the canonical profile separates definition, calculation, interpretation and decision use. That keeps readers from collapsing a descriptive metric into a trading strategy. An indicator can describe trend, momentum, volatility, participation, positioning or risk without providing a complete entry, exit, sizing or portfolio decision.




## What does it measure?



Bullish Percent Index measures specific market properties in the Breadth domain. The practical value is repeatability: the same inputs and formula can be applied across a defined dataset, allowing users to compare readings through time or across instruments when the calculation convention is held constant.




## How to read Bullish Percent Index



Interpretation depends on the market property being measured. A descriptive reading is not automatically predictive. The same numerical state can lead to different outcomes in a strong trend, quiet range, event-driven gap or illiquid market. Always combine with context from price structure, volume, and broader market regime before drawing conclusions.




## Strengths



- It reads each stock's point and figure chart status as a binary buy or sell state, so every constituent counts once regardless of price level or size.
- Point and figure charts ignore time and small reversals, which filters out minor noise before the signal is counted.
- Reproducible when the formula and data convention are fixed.




## Weaknesses and limitations



- A stock's status flips only when its chart completes a full reversal, so the percentage updates in lumps and can lag changes in the underlying trends.
- Results require reproducing the chart construction for every constituent, so independent recalculation is harder than for a moving-average breadth gauge.
- 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. Where multiple valid definitions exist, Swoopr states the alternatives and the reason for selecting its primary convention.







## Frequently Asked Questions


        



Is Bullish Percent Index a buy or sell signal?




No. A reading near 50 percent means the universe is evenly split. It depends on the point and figure settings, and the 70 and 30 levels are conventions, not rules. 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 Bullish Percent Index?




Bullish Percent Index takes these inputs: point and figure chart status for each stock; constituent list for the index or sector; box size and reversal settings used for the charts. There is no universal best setting for the tunable ones, so test them across instruments, regimes and out-of-sample periods and favor stable parameter regions over one historical winner.










Can Bullish Percent Index be used by itself?




It depends on the point and figure settings, and the 70 and 30 levels are conventions, not rules. The index can stay high for long periods in strong trends. For that reason it is read next to measures of direction, participation, valuation, liquidity and risk, not alone.










Does Bullish Percent Index work on every timeframe?




The calculation (BPI = stocks on a point and figure buy signal / total stocks in the universe x 100) 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 Bullish Percent Index give false signals?




A stock's status flips only when its chart completes a full reversal, so the percentage updates in lumps and can lag changes in the underlying trends. Results require reproducing the chart construction for every constituent, so independent recalculation is harder than for a moving-average breadth gauge. Lag, noise and regime changes add to this, because market participants react to new information after the reading is calculated.










How should Bullish Percent Index be backtested?




Rebuild Bullish Percent Index from point and figure chart status for each stock 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.












S




Swoopr Editorial Team



The Swoopr Editorial Team produces independent investment education, research, and tools for understanding markets, evaluating opportunities, and managing risk. All content is educational only and does not constitute personalized investment advice.



See our [editorial policy](https://www.getswoopr.com/legal/editorial-policy/) and [corrections policy](https://www.getswoopr.com/legal/corrections-policy/).