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The RSI: Unveiling the Power of the 'Over' and 'Under' in Stock Trading

Improve your trading decisions by understanding the RSI (Relative Strength Index), a stock market tool likened to a kitchen timer for stocks. This handy guide explains how RSI can indicate when a stock is overbought or oversold, offering valuable insight to traders on potential market trends.

Relative Strength Index
The RSI: Unveiling the Power of the 'Over' and 'Under' in Stock Trading (Charts by TradingView)


Hello, future market mavens! Let's take another stroll through the bustling streets of the stock market—a vibrant place where millions buy and sell shares of companies every day. Today, we'll unravel the secrets of a cool tool called the Relative Strength Index (RSI), which acts like a kitchen timer, telling us when a stock might be overcooked (overbought) or undercooked (oversold).

What is the Relative Strength Index (RSI)?

Picture this: a game of tug-of-war where one side (let's call them Team Overbought) has been pulling so hard and for so long that they're getting tired. Soon, they might lose their grip, and the other team (Team Oversold) will start pulling back. This is what RSI helps us identify in the world of stocks. It measures if a stock has been bought too much (overbought) or sold too much (oversold).

How the RSI Works

RSI scores range from 0 to 100. Think of it like a movie rating: If a stock's RSI is above 70, it's like a blockbuster that everyone's watching—it might be overrated and could be heading for a flop. But if it's below 30, it's like an indie film that hasn't caught everyone's attention yet—it might become the next sleeper hit.

Why is the RSI Helpful in Trading?

The RSI can give traders a hint about when a stock's price might flip direction, like a seesaw at the park. When a stock is oversold (RSI below 30), it might be a good time to consider buying (as prices could go up). When it's overbought (RSI above 70), it might be time to consider selling (as prices could go down).

How to Use the RSI in Trading

If a stock's RSI climbs above 70, it could mean the price is about to tumble down—so traders often think about selling. On the other hand, if it falls below 30, it might be about to climb up—making it a potential good time to buy. It's like deciding when to get on or off the seesaw.


Our trusty RSI is like a handy kitchen timer for traders, helping us to detect whether a stock is overcooked or undercooked. But remember, it's just one of many tools you can use. The more you learn about different indicators, the better you'll understand the stock market's twists and turns. But remember, these tools aren't crystal balls—they can't predict the future with certainty. They're here to help us make more informed decisions.


RSI - The Relative Strength Index is a tool that measures the speed and change of price movements to determine whether a stock is overbought or oversold.

Overbought - A situation in which the demand for a certain stock outpaces its supply and the price is driven higher than it logically should be.

Oversold - The opposite of overbought. When a stock is oversold, it means the stock has been excessively sold and its price might rise.

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