Home » Share Market » Pvi: Positive Volume Index Definition & Meaning

Pvi: Positive Volume Index Definition & Meaning

The PVI is usually used to calculate the negative volume index (NVI). These measurements are collectively known as “price accumulation volume indicators.” 

To calculate whether a market is bullish or bearish, it is common to use both the positive volume index and the negative volume index, both of which were created by Norman Fosback.

The way that prices shift when trading volume increases is the basis for the Positive Volume Index (PVI). Since it is generally accepted that novice traders drive high-volume periods, PVI is intended to track the price fluctuations that the “uninformed” public is trading during these times.

If the Positive Volume Index falls below its moving average of 255 periods, a bearish market is indicated. In a bull market, the opposite is true. 

The number of periods utilized to calculate the signal line (the PVI moving average) is all that has to be entered. In this post, we will discuss the PVI indicator and how to trade with it in great depth.

When Does PVI Come into Use?

PVI is used in the technical analysis of the stock market. Due to the volatile nature of the trading domain, stock pricing moves up and down dynamically occasionally. In such a scenario, it becomes crucial to understand which capital investment is worthy.

Metrics like PVI have become very helpful in identifying all those areas of intelligent investment. There is no point in being an irrational novice investor who trades money without research.

It is always recommended that you conduct detailed research. Determine which profitable stocks are suitable for investment. Consider market fluctuations and emotional responses.

Technical Significance of PVI

The PVI full form is the Positive Volume Index. PVI, along with NVI, or negative volume indexing, helps to keep a proper track.

  • This helps track all transactions made and the total trading volume involved. It also tracks the profit earned through an investment vehicle.
  • If there is a price change in the decreasing trading volume, then it is usually considered a positive indicator. On the other hand, if the price changes when trading volume increases, it is known as a negative indicator.
  • Any pro trader will make an investment when the trading volume decreases. This will lead to some smart moves. However, the masses will go for the other perspective. This usually happens when the trading volume increases.
  • With the PVI indicator, you can understand what the masses are doing. You can understand their activities in stock investments and with NVI. You can also learn what advanced or pro traders are doing in the market.

How to Calculate the Positive Volume Index (PVI)?

The PVI (Positive Volume Index) is obtained by summing all percentage changes in stock prices. These prices are carried out on days with an increase in trading volume. This can be called a cumulative indicator.

The formula for the Positive Volume Index

The PVI formula is as follows if the volume today is higher than it was the day before.

PVI = Previous PVI + ((Close – Previous Close)/Previous Close) * Previous PVI))

Conversely, if the current day’s volume is less than the previous day’s volume, then the formula for the Positive Volume Index is as:

PVI = Previous PVI

Here’s a breakdown of the calculation process:

1. Select a Starting Point

Start by selecting an initial point for the calculation. Usually, the first available period or day is chosen. This point will form the basis for all subsequent calculations.

2. Determine Daily Volume and Price Changes

Calculate the percentage change in the stock’s price for each trading day, starting from the first day before the closing price. Furthermore, ask whether the trade volume has grown or declined since the preceding day.

3. Calculate Positive Percentage Changes

In case of an increase in daily trading volume from the previous day, calculate the percentage change in the stock’s price. On the contrary, the volume of trading might decline. Then, you must disregard the price variation for that day.

4. Sum Positive Percentage Changes

Cumulate the positive percentage changes from days of trading volume that are increasing. Calculate the cumulative total. Then, add the corresponding positive percentage change value. This is usually obtained from the previous day’s data.

5. Establish the PVI

The sum of relative changes will produce a positive volume index indicator. This index depicts the overall constructive mood in the market, linked to phases when traders buy more or accumulate.

Keep a PVI frame to see the changes in constructive momentum over time. A rising PVI suggests enhanced buying momentum, which also indicates constructive trends. At the same time, a declining PVI might be seen, too. It either diminishes the buying influence or suggests a shift in market sentiment.

Through these procedures, traders can appropriately compute. They can employ the positive volume index indicator to assess the strength of bullish trends and make righteous trading decisions in the stock market.

Comprehending how to interpret the PVI will help traders determine possible entry and exit moments and optimise their trading strategies. Recent trending market events can also benefit from this.

Limitations of Using the Positive Volume Index (PVI)

While the Positive Volume Index (PVI) is a valuable tool for assessing positive trends in the stock market, it also has certain limitations to consider.

Let’s understand the details:

  • Lack of Confirmation

The model only considers valuations on days when the volume increases. It does not consider the days when the volume decreases.

Another issue that experts need to address is the fact that the outcome may need to be completed. It may lead you to overlook some changes in the market trend.

  • Volume Interpretation

PVI strongly depends on trading volume as a gauge of market strength. Nevertheless, volume alone cannot be seen as a perfect gauge of investor opinion or market trends. Other factors can influence trading activity.

  • Historical Bias

PVI calculations are sometimes based on statistical data and historical events. They do not always precisely match the future trend, making market behaviour volatile. Even present success may not positively influence the subsequent figures.

  • Limited Scope

PVI is only one of the many technical indicators used in stock market analysis. It is used to predict the future.

This is done exclusively based on PVI for time analysis, ignoring everything else. These could be price action, trend analysis, and fundamental data. This could lead to wrong or incomplete conclusions about the market situation.

  • Interpretation Challenges

Interpreting the Positive Volume Index requires a deep understanding of technical analysis concepts and market dynamics. Novice traders may struggle to interpret PVI signals effectively but can incorporate them into their trading strategies.

  • Sensitivity to Volume Fluctuations

Volatility in the price movement affects PVI calculations. Thus, sometimes, such signals show random and inappropriate results.

Unexpected big bursts or drops in volume may distort PVI estimates, causing overestimations or underestimations of the market’s strength.


By now, you have clearly understood that the positive volume index has proven helpful. This tool helps in studying the increase in stock prices. But be aware of its shortcomings.

Traders should combine PVI with technical and fundamental analysis to make a well-considered investment decision. Knowing the constraints can better equip traders to make their trades accordingly.

With practice, you will understand how to use factors like PVI to make better decisions about stock investments. Whether you want to make a smart investment or take a crowd-based approach depends on your understanding and approach. 


What does the PVI symbol on the stock market signify?

To identify possible positive trends, the Positive Volume Index, or PVI, is a technical analysis indicator used in the stock market that focuses on days with higher trade volume than the day before.

How is the PVI calculated?

Resolve the percentage change in price between two consecutive days while the trading volume on the second day exceeds the volume on the first day to compute PVI. 
Next, increase the PVI figure from the previous day by this percentage of price change. Assume that the PVI will start at 100 when the computation begins.

What does the Positive Volume Index (PVI) aim to achieve?

PVI looks at the relationship between trade volume and price fluctuations to find potential positive trends in the market.
A rising PVI implies that knowledgeable money is driving the market trend, whereas a falling PVI can point to an increase in the actions of uneducated investors and potential market volatility.

What data is provided by the Positive Volume Index (PVI)?

The Positive Volume Index (PVI) provides information on market patterns that are impacted by knowledgeable investors or smart money. 
While a declining PVI can indicate less dependable pricing movements or market turbulence, a rising PVI suggests a positive trend.

How is the positive volume index calculated?

To calculate the positive volume index, you must have trade volume data going back at least two days. When the trade volume on the second day exceeds that of the first, get the percentage change in price between the two days

Enjoyed reading this? Share it with your friends.

Post navigation

Leave a Comment

Leave a Reply

Your email address will not be published. Required fields are marked *