Multimedia Learning Hub

Understand the lock — circuit stocks can trap you if you don't know the rules

What You Will Master

NSE's circuit breaker system applies daily price limits to prevent extreme volatility. When a stock hits its upper or lower limit, trading continues but only on one side — creating a completely illiquid situation for the other side. The Circuit Stocks tab on Finmagine shows you which stocks are locked in circuit right now during market hours, their price band, and their volume. Understanding circuits is essential for avoiding one of the most dangerous traps in Indian equity markets.

What This Guide Covers:

How NSE circuit limits work — the four band levels (2%/5%/10%/20%)
Upper vs Lower circuit mechanics — who can trade and who can't
Illiquidity risk — the lower circuit trap
T+1 settlement implications — what happens after a circuit day
Using the tab for research — discovery without getting trapped

What are the four NSE circuit band levels and what do they mean?

NSE assigns one of four price bands to each stock: 2%, 5%, 10%, or 20%. A 20% band means the stock can move up to +20% or down to -20% in a single session before circuit locks. A 2% band means the stock is under tight restrictions and can only move ±2% before hitting circuit. Lower band stocks (2-5%) are typically under ASM (Additional Surveillance Measure) or GSM (Graded Surveillance Measure) for irregularities or extreme volatility — treat them with extra caution.

In an upper circuit, can you buy or sell? In a lower circuit?

Upper circuit (Only Buyers): The stock has hit its daily price ceiling. There are only buy orders in the queue — no sellers willing to sell at or below the ceiling. You CAN buy if you place an order at the circuit price (you'll be in a queue), but you CANNOT sell because there are no buyers above the circuit price. Lower circuit (Only Sellers): The exact opposite — you CAN sell but CANNOT buy. The trapped position risk is in lower circuit: if you hold shares and the stock hits lower circuit, you see losses but cannot exit until buyers return.

What happens when a stock is in lower circuit for multiple consecutive sessions?

Each day the circuit locks before buyers absorb all the sell orders, the stock remains locked the next day from the new (lower) circuit level. A stock can fall 10% per day for many consecutive sessions while holders are unable to exit. This is the "circuit cascade" — one of the most destructive outcomes in Indian markets. Stocks in lower circuit for 3+ consecutive days typically have a serious fundamental problem (fraud, SEBI action, promoter exit, massive earnings miss) rather than normal market volatility.

How should you use upper circuit stocks in your research workflow?

An upper circuit stock is a momentum signal but NOT a same-day buy opportunity (there are no sellers to buy from). The workflow: (1) note the stock and its catalyst (announcement, order win, earnings), (2) check fundamentals on the stock page — is this a quality business or a speculative SME?, (3) watchlist it, (4) when the stock opens without hitting upper circuit the next session (sellers appear at higher prices), assess the opening price vs previous circuit level for a rational entry with defined downside. Don't FOMO into a circuit queue — position sizes are unknown and fills are uncertain.

What are T+1 settlement implications of a circuit day?

Under T+1 settlement (mandatory for all NSE stocks since January 2023), shares bought today settle the next trading day. If you buy a stock at upper circuit today, you receive the shares tomorrow. If the stock gaps down tomorrow and hits lower circuit, you now own shares you cannot sell. The risk is asymmetric and fast. For circuit stocks, use smaller position sizes than normal and always have a pre-defined exit plan for the next session's open.

1. How NSE Circuit Limits Work

NSE sets a daily price band for every listed stock. The band determines the maximum percentage the stock price can move in a single trading session. When the price reaches the upper or lower limit of this band, the stock is said to be "in circuit."

Band	Max Daily Move	Typical Stocks	Risk Level
20%	±20% per session	Small/mid-cap, SME, normal-surveillance stocks	Normal — wide band, room to move
10%	±10% per session	Stocks added to ASM Stage 1/2 for volatility	Elevated — watch for surveillance reasons
5%	±5% per session	ASM Stage 3, F&O stocks with specific conditions	High — enhanced surveillance, lower liquidity
2%	±2% per session	GSM (Graded Surveillance), T2T, stocks with serious irregularities	Very high — exit immediately if in portfolio

2% and 5% band stocks are surveillance flags:

If a stock in your portfolio has been moved to a 2% or 5% band, SEBI or NSE has identified unusual trading patterns. This is not a typical market move — investigate immediately. Check NSE's surveillance notice. These stocks can fall in lower circuit for many consecutive sessions if the underlying issue is serious (accounting fraud, promoter pledging failure, or regulatory action).

2. The Lower Circuit Trap — and How to Avoid It

The lower circuit trap is one of the most painful outcomes in Indian equity investing: you can see your loss updating in real time, but there are no buyers to sell to. Every day the stock remains locked, the loss compounds and your ability to exit does not improve.

The pre-emptive exit rule:

Do not wait for a stock to hit lower circuit before deciding to sell. Check the Circuit tab regularly during your holdings review. If a stock in your portfolio appears in the tab with decreasing volume over consecutive days (volume drying up, suggesting fewer buyers each session), exit before the circuit locks — even if you take a small loss — rather than waiting and potentially being locked in.

Patterns worth watching in Upper Circuit

Earnings-driven upper circuits in quality companies (NIFTY 500 members with strong fundamentals) — these are often the best post-earnings momentum plays. The circuit clears within 1-2 sessions as sellers appear at higher prices.
Order win upper circuits in capital goods / defence / infrastructure stocks — large government order announcements can trigger sustained multi-session upper circuits.
SME stock circuits — treat with extreme caution. Many SME stocks hit upper circuits on very thin volume due to low float. These often reverse sharply when the circuit unlocks.

Circuit tab availability:

Circuit data is live only during market hours (9:15 AM – 3:30 PM IST). The tab shows "No circuit stocks found" outside market hours or on trading holidays — this is expected behaviour, not a data error. Check it after 10:30 AM when the session has stabilised from opening volatility.

Ready to Analyse Indian Stocks Like a Pro?

Finmagine gives you 30+ computed financial ratios, sector benchmarks, FII/DII flows, the Finmagine Score, and AI-powered analysis — all in one place.

Analyse a Stock → Create Free Account

← Markets Guide

🔒 Markets — Circuit Stocks Tab

Upper Circuit (Only Buyers) · Lower Circuit (Only Sellers) · Circuit Bands · Illiquidity Risk