Actually, supply and demand are the most fundamental concepts behind price movements in every market, whether it's stocks, energy, gold, or even digital assets. But most people understand them only superficially.

Simply put, demand is the desire to buy, while supply is the desire to sell. When plotted on a graph, demand is a downward-sloping line—higher prices lead to less buying, and lower prices lead to more buying. Conversely, supply is an upward-sloping line—higher prices encourage sellers to sell more, and lower prices lead to less selling.

Why is this the case? There are two main factors. First is the income effect—when prices drop, the money in our pockets becomes more valuable, allowing us to buy more. Second is the substitution effect—when a product becomes cheaper, we prefer to buy that instead of more expensive alternatives.

However, supply and demand are not limited to these basic factors. Many other influences come into play, such as seasons, government policies, technology, consumer confidence, and even unexpected events like the war in the Middle East, which can cause a massive surge in oil demand.

The most important point is equilibrium—that is, the point where the demand and supply lines intersect. This is the price at which the market agrees. Prices tend to settle here because if prices rise, sellers will want to sell more, but buyers will want to buy less, leading to excess inventory and a need to lower prices. Conversely, if prices fall, buyers will want to buy more, but sellers will want to sell less, leading to shortages and a need to raise prices.

In financial markets, the supply and demand story becomes more complex. Demand is influenced by macro factors such as inflation rates, interest rates, economic growth, liquidity in the financial system, and investor confidence. Supply depends on decisions by listed companies—whether they issue new shares or buy back stock—their listing status, and market regulations.

When it comes to trading, techniques that incorporate supply and demand are often used. For example, analyzing candlestick charts: a green candle (closing price higher than opening) indicates strong demand; a red candle (closing lower than opening) indicates strong supply; a doji (opening and closing at the same price) shows a balance between the two forces.

Trend analysis is similar. If prices are making new highs, demand remains strong; if they are making new lows, supply remains strong. Support and resistance levels are points where demand or supply is waiting to act—support is where buyers are ready to buy, and resistance is where sellers are ready to sell.

The Demand Supply Zone technique is quite popular, with two main approaches: trading at reversal points and trend-following. Reversal trading often occurs when prices have moved significantly and then pause before changing direction. For example, the DBR (Demand Zone Drop Base Rally) pattern occurs when prices plunge, pause to form a base, then reverse upward. RBD (Rally Base Drop) occurs when prices rally, pause, form a base, then reverse downward.

Trend-following patterns include RBR (Rally Base Rally), where prices rally, pause, then rally again; and DBD (Drop Base Drop), where prices drop, pause, then continue downward.

What’s important to understand is that supply and demand are not just theories—they are real phenomena that happen every day in the markets. Whether among professional investors or retail traders, everyone is playing the same game—trying to predict which side will win. Once you deepen your understanding of this, your investment decisions will be more grounded and informed.