circuit limit meaning in share market

A circuit limit, or price band, is the maximum percentage a stock is allowed to move away from its previous close in a single session. Once it is reached the exchange accepts no trades beyond it in that direction, and the stock is described as locked at its upper or lower circuit. Indian exchanges set these bands security by security, commonly at 2%, 5%, 10% or 20%.

a stock locked at its lower circuit has

Sellers and no buyers. Everything resting at the band price is on the sell side, so a sell order simply joins a queue that may not clear that session or the next. The chart will show a clean fall to the circuit price, which hides the fact that no exit was available anywhere inside that move.

will my stop loss execute if the stock hits lower circuit

Frequently not. An SL-M order triggers and turns into a market sell, but at the lower circuit there is nobody buying, so it sits unfilled — and if the stock opens at the lower circuit again the next day, the eventual fill can land far below the price you set. In narrow-band stocks the real control is position size, because the stop cannot be relied on at all.

what are the price band levels used on Indian stocks

Individual securities are commonly assigned bands of 2%, 5%, 10% or 20%, with the tighter ones going to illiquid and surveillance-flagged names and wider, dynamically flexed bands applying to stocks that have derivatives. Separately, market-wide circuit breakers halt the entire market on index falls of 10%, 15% and 20%, with the length of the halt depending on which level was breached and how early in the day it happened.

can I buy a stock that is locked at upper circuit

Only if a seller appears at the circuit price, and that is exactly what is missing while the lock holds — buy orders queue up and most never fill. The orders that do get filled usually fill on the day the lock breaks, which is often the day the buying pressure ends, so an upper circuit traps buyers in the same way a lower circuit traps sellers.

Circuit limits, halts and when the chart stops

Indian exchanges apply price bands to individual securities and market-wide circuit breakers to the indices. When a band is hit, trading in that stock effectively stops in one direction — and a stop-loss order in an untradeable market is just an instruction nobody can fill.

Think of it like this

Rasta band, gaadi khadi

You planned the route and left in good time. Halfway there the road is closed. Your plan was fine; the road simply is not available, and no amount of preparation opens it.

In the market

A circuit is that closed road. Your stop was reasonable, your size was reasonable, and there is nobody on the other side to trade with at any price you would accept.

The two kinds

	Stock price band	Market-wide circuit breaker
Applies to	An individual security	The whole market, via index moves
Typical levels	2%, 5%, 10% or 20%, set per stock	Index falls of 10%, 15%, 20%
Effect	No trades beyond the band that session	Trading halted market-wide for a period
Who it hits	Smallcaps and news-driven stocks most	Everyone, rarely
Frequency	Common	Very rare

What it does to a stop

Worked example

A stop that could not execute

A midcap with a 10% band, bought at ₹400

Your stop5% below entry, sized for 1% risk₹380

Bad news overnightBelow your stop alreadyOpens at lower circuit ₹360

Your SL-M triggersAnd joins a queue with no buyersBecomes a market sell

Day 1 closeNo fillLocked at ₹360

Day 2Still no fillOpens lower circuit again ₹324

Eventual fillA 22% loss on a position sized for 5%Around ₹310

Nothing was done incorrectly. The stop was placed sensibly and the size was calculated properly. Circuits removed the assumption both depended on — that a price you can see is a price you can trade.

Loading interactive demo…

A circuit behaves like a gap that repeats for several days. Widen the gap and watch what happens to a position sized on the stop distance.

Managing the risk

Four practical measures

1
Check the band before buying
It is published per security. A 5% band means a two-day move can trap you for a week.
2
Size smaller in narrow-band stocks
Your true worst case is several consecutive circuit days, not your stop distance. Size against that.
3
Avoid holding narrow-band names through events
Results in a 5% band stock is precisely the combination that produces an untradeable position.
4
Watch the surveillance framework
Stocks under additional surveillance get tighter bands and higher margins. That status is public and changes.

Check yourself

A stock opens at its lower circuit with your stop-loss already triggered. What is likely to happen?

Simple bhasha mein

Rasta band, gaadi khadi

Aapne raasta socha tha, waqt se nikle bhi the — aur beech mein rasta hi band mila. Plan sahi tha, sadak available nahi thi. Lower circuit pe bechne wale hain aur khareedne wala koi nahi — aapka stop loss queue mein khada rehta hai, kabhi do din tak. Chart pe move dikhta hai, exit nahi tha.

What to remember

A price you can see on a chart is not necessarily a price you can trade.
At the lower circuit there are sellers and no buyers, so stops may not fill for days.
Your true worst case is several consecutive circuit days, not your stop distance.
Upper circuits trap buyers the same way, usually filling on the day momentum ends.
A minimum traded-value filter screens out most circuit exposure automatically.

You reached the endMark it done and keep your streak going.

Up nextPaper trading properly, and what it cannot tell you Previous: Every stock has a personality

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Common questions

Short, direct answers to what people ask about this topic.

circuit limit meaning in share market: A circuit limit, or price band, is the maximum percentage a stock is allowed to move away from its previous close in a single session. Once it is reached the exchange accepts no trades beyond it in that direction, and the stock is described as locked at its upper or lower circuit. Indian exchanges set these bands security by security, commonly at 2%, 5%, 10% or 20%.
a stock locked at its lower circuit has: Sellers and no buyers. Everything resting at the band price is on the sell side, so a sell order simply joins a queue that may not clear that session or the next. The chart will show a clean fall to the circuit price, which hides the fact that no exit was available anywhere inside that move.
will my stop loss execute if the stock hits lower circuit: Frequently not. An SL-M order triggers and turns into a market sell, but at the lower circuit there is nobody buying, so it sits unfilled — and if the stock opens at the lower circuit again the next day, the eventual fill can land far below the price you set. In narrow-band stocks the real control is position size, because the stop cannot be relied on at all.
what are the price band levels used on Indian stocks: Individual securities are commonly assigned bands of 2%, 5%, 10% or 20%, with the tighter ones going to illiquid and surveillance-flagged names and wider, dynamically flexed bands applying to stocks that have derivatives. Separately, market-wide circuit breakers halt the entire market on index falls of 10%, 15% and 20%, with the length of the halt depending on which level was breached and how early in the day it happened.
can I buy a stock that is locked at upper circuit: Only if a seller appears at the circuit price, and that is exactly what is missing while the lock holds — buy orders queue up and most never fill. The orders that do get filled usually fill on the day the lock breaks, which is often the day the buying pressure ends, so an upper circuit traps buyers in the same way a lower circuit traps sellers.