Have you ever wondered what causes asset prices to go up and down? Whether stocks, energy, gold, or even digital assets, the answer lies in the principles of supply and demand, which are the fundamental mechanisms driving all markets. If you truly understand these principles, you can see the market from a different perspective.

Supply and demand are the simplest yet most complex concepts in the market. Both describe just the desire to buy and sell, but when they meet, they create the prices we see every day.

Starting with demand, this is the desire to purchase goods or services. When prices are low, people want to buy more. When prices are high, demand decreases. This is called the law of demand, which results from two factors: income effects (when prices fall, our money is worth more) and substitution effects (when prices fall, this good becomes cheaper than alternatives).

But demand isn't solely dependent on price. It also depends on buyers' income, preferences, the number of consumers, and even expectations about the future. For example, recent events like the war in the Middle East have caused oil demand to surge due to transportation route closures. This is a change in demand driven by external factors.

Conversely, supply is the desire to sell goods. When prices are high, sellers are willing to sell more. When prices are low, they reduce their supply. This is the law of supply, which is the opposite of demand.

Supply is also affected by other factors such as production costs, technology, and tax policies. If there are production issues, like natural disasters, supply decreases. For example, when the Strait of Hormuz closes, 20% of the world's oil disappears from the market immediately, causing oil prices to spike sharply due to a significant reduction in supply.

The key point is that prices are not determined solely by demand or supply. They are set at the point where the two curves intersect, known as equilibrium. At this point, the quantity buyers want matches the quantity sellers offer, and prices stabilize. If prices rise, producers increase output, and demand decreases, leading to excess supply and a price correction back to equilibrium. Conversely, if prices fall too low, demand increases, supply decreases, leading to shortages and a price increase.

In financial markets, supply and demand work similarly. When good news emerges, more people want to buy stocks (demand increases), pushing prices higher. When bad news occurs, more people want to sell (supply increases), causing prices to fall. Investors often view stock prices as indicators of a company's value, so future profit expectations influence buying and selling decisions.

Traders use various tools to analyze supply and demand, such as candlestick charts. A green candle (closing price higher than opening) indicates strong buying pressure, while a red candle (closing lower than opening) indicates strong selling pressure. Observing price trends helps: if prices keep reaching new highs, demand remains strong; if they keep hitting new lows, supply is dominant.

Identifying support and resistance levels is another method. Support is a price level where buying interest is strong enough to prevent further decline; if the price breaks below support, a reversal often occurs. Resistance is a level where selling interest prevents further rise; if the price breaks above resistance, it often reverses upward.

The popular Demand Supply Zone technique involves spotting moments when the market is out of balance—when prices move rapidly up or down and then pause. This is when supply and demand clash. When new factors come into play, prices tend to break through these zones and continue in the same direction.

For example, if prices drop sharply (Drop) and then stabilize (Base), there's a chance they will reverse upward (Rally). This is called a Demand Zone (DBR). Traders might buy at the breakout above the zone. Conversely, if prices rise sharply and then pause, they might reverse downward (RBD), and traders could sell at the breakout below the zone.

Understanding supply and demand isn't difficult if we observe the market daily. Prices fluctuate because of changes in buying and selling interest. If we can anticipate these shifts, we can better predict price movements. That's why traders and investors focus on these principles. The most important thing is to practice applying them and learn from the market continuously.