Introduction to Supply and Demand

What is Supply and Demand?

Every day stock prices change due to the result of market forces in respect to supply and demand. When more people want to buy a stock (demand) than sell it (supply), then the price moves up (Refer to the green box in the diagram below).

On the other hand, if more people wanted to sell a stock than buy it, there would be greater supply than demand, and the price would fall(Refer to the red box in the diagram below).

sti-1yearAnd when you have supply and demand been acted out on bigger time frame, you will be presented the overall trend direction. Is it trending up, down or sideway? Below is the chart for STI since 1980 till now. Within the chart, there were a lot of supply and demand (waves) going on. From the chart, it is easy to say that it’s a trending up chart. Reason been the various higher low. We can say that there more buyers than sellers, or the buying strength is more superior than the selling strength. And you as a trader, it important for you to keep a lookout and analyses the strength of each wave. One simple method will be to lookout for a higher low for up trend or lower low for down trend.

Example, look at the black box as below, you can clearly identified a series of higher low and higher high and it looks like it’s a compressed spring waiting to unleash the stored energy within it. Although the probability for a up trend is higher, but it be safer to get in any long position when there is dip and be sure to lookout for a serious supply wave that bleach the previous low.

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