Volume: How Much Was Actually Traded #
Volume shows exactly how many units of an asset changed hands during a given period. Since every trade is, by definition, both a buy and a sell happening at the same moment, total volume is always equal to the sum of all buy orders and, equally, the sum of all sell orders executed in that period — the two sides can never be separated, because one cannot exist without the other.
Real trading volume is considered fairly specialized data, and it isn’t always publicly available in every market. One reason for this is that raw volume figures can reveal the footprint of large institutional traders, so many exchanges and brokers restrict or don’t fully disclose it.
What’s naturally available instead, especially on platforms like MetaTrader, is tick volume. Tick volume doesn’t measure the number of units traded — it measures the number of times the price changed during a period. From earlier lessons, we know that price only changes when one side of a trade (either the buyer’s or seller’s outstanding orders) gets fully absorbed, pushing price toward the side that still has orders remaining. Tick volume simply counts how many of these price-changing events happened. A higher tick volume indicates more market activity during that period, and it’s used as an input in some trading strategies as a practical substitute for real volume.
Volatility: How Sharply Price Is Moving #
Volatility measures the intensity of these price changes — essentially, how large and how frequent the price swings are over a given period, rather than simply counting how many times price changed.
A market can have high tick volume but still be relatively calm if each price change is tiny. Conversely, a market can experience a handful of price changes that are each unusually large, producing high volatility even with fewer total price shifts. Volatility, in short, captures the magnitude of price movement, while volume-based measures capture the frequency of activity.
Trend: When the Market Loses Its Balance #
A trend emerges when a major event or a significant macroeconomic decision disrupts the normal balance of the market, causing orders on one side — either buyers or sellers — to become significantly heavier than the other side.
This imbalance means that, as price moves through its usual back-and-forth swings, it becomes increasingly biased toward one direction — generally upward or generally downward — rather than moving randomly around a stable level. When this sustained directional bias appears, we say the market “has a trend.”
A market with a sustained upward trend is commonly called a bullish market, while one with a sustained downward trend is called a bearish market.
How These Three Concepts Connect #
Volume (or tick volume) tells you how much activity is happening. Volatility tells you how intensely price is swinging as a result of that activity. Trend tells you whether all that swinging is happening with a directional bias, caused by a genuine imbalance between buyers and sellers, rather than balancing out around a stable price. A market can be highly active and highly volatile without having any trend at all, if buying and selling pressure remain roughly balanced — it’s specifically the imbalance that turns volatility into a directional trend.
Conclusion #
Volume measures how much of an asset actually changed hands, with tick volume serving as a practical stand-in when real volume data isn’t available. Volatility measures how large and frequent price swings are, independent of their direction. Trend describes a sustained directional imbalance between buyers and sellers, producing a bullish or bearish market. Together, these three concepts describe not just how much the market is moving, but how intensely, and in which direction.
One-Sentence #
Volume shows how much was traded, volatility shows how sharply price moved, and trend shows whether that movement has a sustained directional bias caused by an imbalance between buyers and sellers.