I just realized that supply and demand are not just economic theories read in textbooks or classrooms. They are working right in front of us every day in the financial markets, whether it's stocks, energy, gold, or even digital assets.

Let me explain simply first. The meaning of supply is the desire to sell goods at different price levels. When prices go up, sellers are willing to sell more. When prices fall, they hold back on selling. That is the basic rule of supply. Demand is the opposite. When prices are high, buyers buy less. When prices are low, they come in more.

What’s interesting is that both are playing a game constantly. The actual prices in the market occur where the demand and supply lines intersect. This is called the equilibrium point. At this point, price and volume tend to stay stable because if the price rises, sellers are happy to sell more, but buyers hold back on buying, creating inventory that pushes prices back down. Conversely, if prices fall, buyers want to buy more, but sellers hold back on selling, causing a shortage that pushes prices up.

In financial markets, factors affecting demand include many things, such as interest rates, economic growth, system liquidity, and most importantly, investor confidence. When interest rates are low, money flows more into the stock market. When the economy is strong, people are more hopeful and willing to invest.

As for supply, in the stock market, it relates to company policies like share buybacks or capital increases. New companies going public (IPOs) also increase the supply of securities in the market. Additionally, external factors like government policies, regulations, and even weather conditions can impact production.

A clear example is the Strait of Hormuz situation. When this strait was closed, over 20% of the world's crude oil suddenly disappeared from the market. This is a significant "Supply Shock." The demand for energy didn't change, but supply dropped sharply. As a result, oil prices surged rapidly due to shortages.

Now, let’s look at technical analysis in trading. When you see a green candlestick (closing price higher than opening price), it indicates buying strength. Demand is strong, and prices can stay high. A red candlestick is the opposite—selling strength, prices weaken. Doji (opening and closing prices are the same) shows that both sides have equal strength; no one has won yet.

Looking at price trends also tells the same story. If prices keep making new highs, demand remains strong. If prices keep making new lows, supply is dominant. If prices move within a range, it means both sides are balanced.

Support and resistance levels work on the same principle. Support is where demand is waiting to buy; investors believe the price here is fair and worth buying. Resistance is where supply is waiting to sell; investors see the price as high and are willing to sell.

The popular Demand Supply Zone technique uses trend assessment to find moments when prices lose balance. It occurs when prices move rapidly (up or down) and then pause within a range. When new factors come in, prices break out of that range and continue in the same direction. This is when many traders jump in.

There are two main patterns. First is the Demand Zone Drop Base Rally (DBR), which happens when prices fall sharply, then pause in a range. When buying strength returns, prices break above the range and go up. Second is the Supply Zone Rally Base Drop (RBD), which occurs when prices rise quickly, then pause. When selling strength returns, prices break below the range and fall.

Trend-following trading is more common than reversal trading. There are two main patterns. First is the Demand Zone Rally Base Rally (RBR), where strong buying pushes prices up, then they pause before rising further. Second is the Supply Zone Drop Base Drop (DBD), where strong selling drives prices down, then they pause before continuing downward.

What I’ve learned from studying this is that the meaning of supply and demand is not just a concept in textbooks. They are real rules operating in the market. If you can predict supply and demand, you can also predict prices. This is what traders and investors use daily to make decisions, whether through fundamental analysis (looking at earnings, growth, confidence) or technical analysis (looking at price, volume, trends). Both methods rely on the same principle: finding points where supply and demand are balanced or losing balance.