A lower circuit is the minimum price limit a stock can fall to in a single trading session, established by the exchange to prevent panic-driven cascades and protect retail investors from catastrophic one-day losses.
Why Lower Circuits Exist
When bad news hits (missed earnings, regulatory fine, management scandal), retail traders panic-sell without thinking. Lower circuits prevent this panic from spiraling into a complete washout. The circuit locks in a maximum daily loss—forcing everyone to wait until the next day to reassess.
This isn’t always good news for you as a trader. Lower circuits also trap you inside losing positions.
How Lower Circuits Work
When a stock falls by its circuit percentage (usually 5% on NSE/BSE), it cannot fall further that day. The price is locked at the lower circuit level. No new sell orders are accepted below that price.
| Stock Category | Daily Loss Limit |
|---|---|
| A-Group (liquid) | 5% maximum fall |
| T-Group (less liquid) | 20% maximum fall |
| Micro-cap stocks | Often 20% |
| Newly listed stocks | Often 20% for first month |
What Happens at Lower Circuit
Day 1 at 9:15 AM: Stock is $100 10:00 AM: Quarterly earnings miss expectations badly 10:05 AM: Panic selling begins; stock drops to $95 10:06 AM: Lower circuit is hit (5% limit on NSE) Market close: Stock locked at $95 lower circuit
Next trading day: The circuit resets. The stock can fall further if the selling continues—or bounce if the market decides the sell-off was overdone.
The Lower Circuit Trap
Lower circuits protect against panic, but they also trap traders:
Scenario: You hold 1,000 shares and it hits lower circuit at $95. You wanted to sell at $97. Too late. You’re stuck until tomorrow.
Next morning: The stock gaps down another 10% on more bad news. Now you’re out $7,000 instead of $2,000.
This is why stop-losses don’t always save you. In emerging markets with circuit limits, your stop-loss can be worthless if the stock gaps down past it the next trading day.
Lower Circuit vs. Upper Circuit
Both are safety mechanisms with opposite effects:
- Upper circuit: Locks in gains; prevents excessive buying panics
- Lower circuit: Locks in losses; prevents excessive selling panics
A stock can hit lower circuit one week and upper circuit the next, depending on news and market mood.
Trading Lower Circuits
Before the crash:
- Set rational position sizes
- Use wide stop-losses that account for overnight gaps
- Don’t use leverage that forces you to sell at market open
At lower circuit:
- Don’t sell at lower circuit prices unless you have a fundamental reason to believe it’s worth even less
- Wait for the circuit to lift the next day and reassess
After the circuit lifts:
- Watch if the selling resumes (confirmation it was justified) or bounces (overshoot correction)
- Real crashes take time to play out; lower circuit is just the first leg down
Lower Circuits in Emerging Markets
Lower circuits are heavily used in:
- India (NSE/BSE)
- Thailand
- Vietnam
- Indonesia
- Philippines
Developed markets (US, Europe, UK) rarely use individual stock lower circuits. They use market-wide circuit breakers instead.
The Psychology of Lower Circuit
Lower circuits are good for retail protection but create false hope. A stock locked at lower circuit doesn’t mean it’s a bargain. It means trading is suspended. The real opportunity comes when the circuit lifts and you see actual buyer interest.
Traders who chase lower circuit stocks often get destroyed when the next day brings fresh selling.
How PipJournal Helps
PipJournal tracks your entries and exits in detail. When you trade stocks with circuit limits, note the circuit level in your trade tags. Over time, you’ll see patterns in your lower circuit trades—which ones recovered (and you should have held) versus which ones continued falling the next day (and you should have exited). That data drives discipline.
