What Is A Circuit In Stock Market?

Time to time we hear this stock has hit upper circuit OR that stock has hit lower circuit OR that stock has upper froze. So what exactly is freezing or circuit in stock market? The market price is based on sentiments. In case of sudden news OR extreme euphoria single sided the sentiment can become uncontrolled. The price of a scrip can increase OR decrease in an uncontrolled way in case of extreme sentiments. That’s why exchange has the provision of circuit filters. In this post, I shall discuss more on upper and lower circuits and will also discuss how to trade upper circuit stocks.

A circuit in stock market is the limit of gain OR loss in a single day for any stock. That means in a simple day the stock cannot go above or below the circuit limit. This is also called the circuit breaker in the stock market. A circuit breaker is also applied to indices apart from stocks. Circuit breaker system applies at 3 stages of the index movement – 10%, 15%, 20%. When the index circuit breaker is triggered there will be a trading halt in the stock market. This is created by the stock exchange to stop manipulation in a stock price. They fix an upper limit and lower limit on every stock.

Similarly when the circuit breaker triggers in any equity the trading of equity also becomes limited. In case of upper circuit or buying freeze no further buying is allowed and in case of the lower circuit or selling freeze no further selling is allowed. The circuit breaker limit depends on the stock to stock between 5%-20%. The circuit limit also is changed based on the stock behaviour. Suppose the stock is hitting 20% upper circuit every day, so after few days the circuit will be limited to 10% by the stock exchange. Once a circuit is hit the graph becomes a straight line in intraday charts. See the image below for an example of circuit in stock market on Hotel Leela share.

Circuit In Stock Market

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After that, if the stock continues to move up or down at the same pace, then again the circuit is limited to 5% now. This is same as we try to tame an uncontrolled child. One thing to remember, that stock futures do not have any circuit filter and hence it is extremely risky to trade them.

Just like stocks our stock indices like Nifty index etc also have a circuit filter of 10%. If any day the index hits upper or lower circuit trading gets halted for 1 hour and then again trading starts. This is once again done to safeguard the traders. If any day market moves 20% on any side, trading is halted for the whole day.

Indrajit is a professional blogger and trading system developer. Amibroker expert, WordPress expert, SEO expert and stock market analyst.Trading since 2002, he has started the journey of StockManiacs.net on 2008. He follows Indian and world stock markets closely.



Categories: Stock Market Basics

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