Price-Volume Trend (PVT)
What Is Price-Volume Trend (PVT)?
A technical momentum indicator that relates price and volume, similar to On-Balance Volume (OBV), but accumulates volume based on the percentage change in price rather than just adding/subtracting total volume.
The Price-Volume Trend (PVT) is a technical indicator used to determine the momentum of a price trend by factoring in trading volume. It is often compared to the more famous On-Balance Volume (OBV) indicator. Both indicators attempt to show the flow of money into and out of a stock. However, PVT improves upon OBV by adding nuance. OBV treats a stock that rises $0.01 on 1 million shares the same as a stock that rises $10.00 on 1 million shares—it adds the full 1 million to the cumulative total. PVT argues that the $10.00 move is more significant. Therefore, PVT calculates the percentage change in price and multiplies it by the volume, adding only that calculated amount to the running total. This makes PVT a cumulative indicator that mimics the price chart but reveals underlying strength or weakness. If prices are rising but the PVT line is flat or falling, it suggests that the volume backing the rally is weak (a bearish divergence).
Key Takeaways
- PVT combines price direction and volume to measure the strength of a trend.
- Unlike OBV (which adds all volume on up days), PVT adds only a portion of volume proportional to the price gain.
- It is considered more accurate than OBV because it accounts for the magnitude of price moves.
- Traders look for divergence between the PVT line and the price chart.
- A rising PVT confirms an uptrend; a falling PVT confirms a downtrend.
How PVT Is Calculated
The formula for PVT is straightforward: **PVT = Previous PVT + (Volume * % Change in Price)** Where % Change in Price = (Close - Previous Close) / Previous Close. Example: * Day 1 PVT: 10,000 (Start) * Day 2: Price rises 5%. Volume is 1,000,000. * Day 2 Calculation: 1,000,000 * 0.05 = 50,000. * Day 2 PVT: 10,000 + 50,000 = 60,000. If the price had only risen 1% on the same volume, the addition would only be 10,000. This sensitivity to the magnitude of the price move makes PVT less prone to distortion by high-volume days with little price change.
Key Elements of Trading with PVT
Traders use PVT for: 1. **Trend Confirmation:** As with most volume indicators, the primary use is confirmation. If the stock is making higher highs, the PVT line should also be making higher highs. 2. **Divergence:** This is the most powerful signal. * **Bullish Divergence:** Price makes a lower low, but PVT makes a higher low. This indicates selling pressure is waning. * **Bearish Divergence:** Price makes a higher high, but PVT makes a lower high. This indicates buying pressure is fading. 3. **Breakouts:** A breakout in the PVT line through a resistance level can precede a breakout in the price chart.
Real-World Example: Divergence Signal
Stock XYZ rallies to a new high of $80.
Comparison: PVT vs. OBV
Choosing the right volume indicator:
| Feature | On-Balance Volume (OBV) | Price-Volume Trend (PVT) | Advantage |
|---|---|---|---|
| Calculation | Adds/Subtracts Total Volume | Adds % of Volume | PVT is more precise. |
| Sensitivity | High to Volume Spikes | Balanced Price/Volume | PVT filters noise better. |
| Best Use | General Money Flow | Momentum Confirmation | PVT for volatile stocks. |
| Signal | Divergence | Divergence | Both signal reversals. |
FAQs
PVT accounts for the *magnitude* of the price move. A small price move on huge volume will distort OBV, making it look like a major buying event. PVT dampens this effect because the small percentage price change reduces the amount of volume added to the indicator.
Yes. PVT is a cumulative number that can be positive or negative depending on the starting point and history. The absolute number doesn't matter; only the direction and trend of the line matter.
It can be. Volume often precedes price. Divergences in PVT frequently show up before the price actually reverses, giving traders an early warning signal.
It works on all time frames, but like most indicators, it is more reliable on longer time frames (daily/weekly) where volume data is more significant and less noisy.
No. Never use a single indicator in isolation. PVT should be used alongside price action (support/resistance) and perhaps a momentum oscillator like RSI for confirmation.
The Bottom Line
Price-Volume Trend (PVT) is a sophisticated tool for volume analysis that offers a clearer picture of market conviction than simpler volume metrics. By weighting volume by price change, it filters out the noise of high-volume churn. Investors looking to refine their trend analysis may consider replacing OBV with PVT. Price-Volume Trend is the practice of quantifying the power behind the move. Through precise calculation, it may result in earlier detection of reversals. On the other hand, like all lagging indicators, it confirms rather than predicts. Use it to validate what the price is telling you.
More in Indicators - Volume
At a Glance
Key Takeaways
- PVT combines price direction and volume to measure the strength of a trend.
- Unlike OBV (which adds all volume on up days), PVT adds only a portion of volume proportional to the price gain.
- It is considered more accurate than OBV because it accounts for the magnitude of price moves.
- Traders look for divergence between the PVT line and the price chart.