PSX Upper Circuit (Upper Lock) — Complete Trading Guide 2026
By ZEME AI Research Team · July 6, 2026 · 12 min read
The PSX upper circuit (also called upper lock) is the most talked-about phenomenon in Pakistan's stock market. Stocks hitting upper circuit daily can deliver 10% returns every single day — but only if you know how to trade them correctly. Most retail investors enter at the wrong time and lose money. This guide explains exactly how it works.
What is PSX Upper Circuit (Upper Lock)?
PSX has a daily price movement limit for each stock:
- Regular stocks: Maximum +10% gain per day (upper circuit) and -7.5% loss (lower circuit)
- Futures stocks: Different limits apply based on futures contract
- New listings: No circuit limit on the first trading day
When a stock hits +10%, it is said to have "hit the upper circuit" or "upper lock." At that point, no sell orders are required to match — all remaining buy orders queue at the circuit price but cannot execute until sellers appear.
Key insight: A stock can stay locked at the upper circuit for the entire trading day if the operator controls enough of the float and refuses to sell. The queued buy volume tells you the strength of demand.
Why Do PSX Stocks Hit Upper Circuit?
Three main reasons a PSX stock hits upper circuit:
1. Operator Campaign (Most Common)
The most common cause. An operator who has accumulated a large position triggers a buying surge. Because they control the float, they simply refuse to sell — the price rises until it hits the circuit. They repeat this over multiple days to create a big gain before distributing.
2. Genuine Positive News
Company results exceeding expectations, a dividend announcement, contract win, or merger news can trigger genuine retail buying strong enough to hit the circuit. These are less predictable but often sustainable.
3. Sector Rotation
When large institutional money rotates into a sector, multiple stocks in that sector can hit circuit on the same day. ZEME AI's sector rotation data identifies these waves early.
How to Trade PSX Upper Circuit Stocks — The Correct Way
Most important rule: NEVER buy a stock on the same day it hits upper circuit. You are buying at the ceiling. If the operator is distributing, you become the exit liquidity.
The Pre-Circuit Strategy (Highest Win Rate)
The correct approach is to buy 1–3 days BEFORE the circuit, not on the day of or after. This requires detecting operator accumulation early — exactly what ZEME AI's platform does.
Entry criteria for pre-circuit play:
• Volume surge 3–10x on a day with +3–8% gain (not yet circuit)
• Stock was "dead" (very low volume) for 10+ previous days
• Operator phase: FULLY LOADED or LAUNCHING
• RSI between 45–72 (not overbought)
• Entry time: 3:00–3:30 PM (last 30 minutes of session)
Day-After Strategy (Moderate Risk)
Buying the morning after a circuit is risky but viable IF:
- The queued buy volume at circuit price was very large (indicates strong demand)
- The operator type historically continues for 2+ circuits (check ZEME AI circuit history)
- The stock has not already run 40%+ from its base
- Wait for the first 15 minutes of trading — if it re-locks at circuit immediately, the operator is continuing
The 3-5 Day Cooling Rule
After a circuit, if the stock fails to circuit the next day and starts pulling back — do not catch the falling knife. The operator may be distributing. Wait 3–5 trading days. If volume dries up and price stabilises near a support level, a new entry may form.
PSX Upper Circuit — Historical Statistics
Based on ZEME AI's analysis of 5 years of PSX circuit data across 470+ stocks:
- Day 1 circuit: +7.4% average gain over next 10 days (57.7% win rate if you buy after)
- Day 2 circuit (consecutive): +15.4% average gain — best risk/reward ratio
- Day 3+ circuits: +31% average gain but highest exit risk (operator nearing distribution)
- Best months for circuits: April, May, December
- Worst months: February, September, October
See Today's Upper Circuit Stocks — Live
Real-time upper lock list + circuit probability for tomorrow.
View Market Data →
Frequently Asked Questions
What is upper circuit in PSX?
PSX upper circuit (upper lock) means a stock has hit its maximum allowed daily price increase of +10%. Trading continues at the ceiling price but no higher. It often signals institutional operator activity or major positive news.
Which PSX stocks hit upper circuit today?
ZEME AI tracks all upper circuit stocks daily in real time. Visit the Market page for today's complete upper lock list, including queued buy volume and operator phase status.
Should I buy a PSX stock that has hit upper circuit?
Do not buy on the same day as the circuit — you are buying at the day's peak. For consecutive circuit plays, buy only in the first 15 minutes of the following morning if the stock re-locks immediately. Otherwise wait 3-5 days.
How many upper circuits can a PSX stock hit in a row?
Theoretically unlimited. Practically, most operator campaigns produce 1-5 consecutive circuits. Stocks with complete operator float control have produced 10-20+ consecutive upper locks. ZEME AI tracks each stock's historical circuit streak and probability of continuation.
What is the difference between upper circuit and lower circuit on PSX?
Upper circuit = stock hit maximum +10% gain (upper lock, price frozen at ceiling). Lower circuit = stock hit maximum -7.5% loss (lower lock, price frozen at floor). Both halt normal price discovery for the remainder of that trading day.
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