Circuit breakers (price bands) cap how far a stock can move in a day. Hit the upper circuit and buyers queue with no sellers; hit lower and you cannot exit - the classic penny-stock trap.
Bands revise with volatility and corporate actions. Index-level market-wide halts (Nifty/Sensex ±10/15/20%) pause the whole market instead.
Example
A 20% lower-circuit lock means your sell order sits unfilled all day while the quote blinks red - liquidity risk made visible.
In Ticker Screener
Price alerts notify you before extremes, and movement highlights flag threshold crosses the moment they happen.
Frequently asked questions
Can circuits be revised mid-day?
Exchanges revise bands periodically; special pre-open sessions handle520%+ corporate-action adjustments. Check the day's applicable filter before trading.
Related terms
Nifty 50
India's benchmark: 50 large stocks across 14+ sectors on the NSE. When India 'is up 1%', this is usually the number.
52-Week High / Low
A stock's highest and lowest price over the past year. Breakouts signal strength; breakdowns signal trouble - both demand volume proof.
Market Cap
Price times shares outstanding: the market's price tag for the whole company. Defines large, mid and small caps.
P/E, ROCE, ROE, P/B, dividend yield and market cap — live beside every price in your watchlist.