Recently studying stock technical analysis materials, I found that many people don't understand the concept of volume-price relationship, especially what the situation of rising price with shrinking volume actually indicates. I think it's necessary to clarify the reasons and logic behind these volume-price relationships, because they can really help you judge the upcoming market trend.

First, you need to understand what the volume-price relationship means. Simply put, it is the correlation between stock price movements and trading volume. When the stock price rises or falls, the accompanying trading volume reflects the true attitude of market participants. By analyzing this relationship, you can better predict the future trend rather than blindly following the crowd.

Let's start with the most common situation. Sometimes you'll see the stock price rising, but the trading volume shrinking, which is a typical case of rising price with decreasing volume. It looks contradictory, right? But in fact, the reason behind it is very important—it indicates that market participants' interest in this rally is gradually waning. It could be a technical rebound, lacking genuine buying support. For example, Tesla experienced this situation in early 2017, with the stock price rising but trading volume continuously decreasing, ultimately failing to sustain the upward move. The reason for rising price with shrinking volume is usually due to increased market hesitation, with no new buyers stepping in to buy.

Conversely, there is a situation called explosive volume decline. This is the most dangerous signal. The stock price drops sharply while trading volume surges significantly, indicating that many investors are panic-selling. During the outbreak of the pandemic in 2020, hotel stocks like Hilton experienced such a plunge. Interestingly, sometimes a volume spike during a decline can provide a bottom-fishing opportunity. For instance, in 2023, Estée Lauder's stock plummeted after missing earnings expectations, but this panic-driven drop was obviously excessive. Investors who entered at the right time gained good returns.

Another situation is when the stock price consolidates sideways while trading volume keeps shrinking, called flat price with decreasing volume. This reflects a market in calm, with investors lacking a clear view. Both NVIDIA and Boeing have shown this pattern. During such times, the market lacks momentum, and a big move may follow, but the direction is uncertain.

Then there's volume contraction during a decline, meaning the stock price falls but trading volume decreases. Netflix in 2018 is an example—its stock price kept dropping, but trading volume was shrinking. This may indicate that investor sentiment is relatively calm, or that the market is waiting for more information.

Finally, there's the situation of falling price with increasing volume. The stock price declines but trading volume increases, which could mean a continued downtrend, but also might signal a bottom. For example, at the end of 2018, Apple experienced this as iPhone sales slowed and trade tensions escalated, with the stock dropping sharply along with increased volume. Similarly, in 2012, Blackberry's stock was in a long-term decline with volume continuously rising, which later became a bottoming signal and a starting point for a rebound.

To understand the reasons behind rising price with shrinking volume and other volume-price relationships, the core is to grasp what trading volume represents. High volume indicates high market participation, with active trading; low volume suggests a quiet market with fewer participants. Combining this with price movements allows you to see the market's true attitude. Positive volume-price relationships usually indicate strong trends, while negative ones may suggest a lack of market confidence.

However, a reminder: looking at volume-price relationships alone isn't enough. You should also combine other technical indicators and fundamental analysis to make more reliable judgments. But mastering these volume-price characteristics can indeed help you avoid many pitfalls in trading.