What is Square Off?
Square off is the act of closing an open trading position so net exposure returns to zero — selling what you bought or buying back what you sold short. On NSE, intraday MIS positions and many F&O exits are executed as square-off orders before session end or expiry.
What square off means
Square off is not a separate product — it is the closing transaction that offsets an open leg. Brokers expose it as a one-click action on open positions. For F&O, square-off realises MTM into closed P&L and frees margin. For intraday cash/MIS, it is mandatory before the session cut-off.
Indian market context (NSE)
MIS intraday trades on NSE must be squared off by broker-specific cut-off (often 15:15–15:20 IST). F&O positions can be carried in NRML until expiry if margin permits. On expiry day, open futures/options must be closed or rolled — otherwise physical or cash settlement applies per contract rules.
Worked example
| Step | Action |
|---|---|
| 09:45 | Buy 1 Nifty MIS futures @ 24,250 |
| 14:30 | Target hit — place square-off sell @ 24,320 |
| Fill | Realised +70 pts × lot value − brokerage |
| Journal | Tag: planned square-off, setup: opening drive |
Common mistakes
- Using MIS when plan was overnight hold — forced square-off breaks strategy.
- Squaring off winners early and letting losers run — journal both as process breaks.
- Not distinguishing broker auto square-off from your own exit in notes.
- Forgetting to square illiquid stock F&O near expiry.
How to validate
- Validate Square Off fills against broker contract notes monthly.
- Measure median slippage in points/₹ for Square Off on Bank Nifty vs mid-caps.
- Flag sessions with abnormal rejections or partial fills for separate review.
- Compare limit vs market tags only on symbols with similar liquidity.
How to track in TradeLyser
- Record order type, limit price, fill price, and latency on the trade.
- Tag “slippage > plan” when Square Off fills worse than expected.
- Monthly slippage report by symbol and order type in analytics.
- Reconcile with broker order log quarterly.
Best practices
- Choose Square Off before the move, not after FOMO entry.
- Default to limits on illiquid mid-caps; markets on urgent exits only.
- Log rejected orders — they reveal unrealistic limit discipline.
- Review slippage in R-multiples, not only rupees.
Common pitfalls
- Chasing with market orders after Square Off already moved.
- Using limits on fast Bank Nifty breaks without timeout rules.
- Not recording partial fills — skews performance stats.
- Assuming broker fills match intended Square Off every time.
How to use this in TradeLyser
In TradeLyser, use exit tags: planned-square-off, stop-square-off, time-square-off, auto-square-off. Review slippage on time-square-off exits monthly.
Reference guide
| Context | Value | Reading |
|---|---|---|
| Timing | Square off MIS before broker cut-off with buffer | Waiting until last minute — slippage and auto square-off fees |
| Journal tag | Tag planned vs forced square-off | Mixing expired worthless options with active exits in one P&L bucket |
Related terms
Auto square off is an automated broker action that closes open positions without trader initiation — typically when MIS intraday cut-off passes, margin falls below requirements, or risk limits are breached. Fills may be at market price during thin liquidity.
Expiration is when derivative contract settles or expires per exchange schedule.
A futures contract obligates parties to transact the underlying at settlement per NSE rules, with daily mark-to-market and margin.
A limit order sets the worst price you accept. Buy limits fill at or below your price; sell limits fill at or above.
Mark to market (MTM) is the daily revaluation of open derivatives positions against the exchange settlement or closing price, with profits credited and losses debited to your ledger. On NSE F&O, MTM runs on open futures and options positions so capital reflects current risk, not just entry price.
A market order matches the best available liquidity now. You accept slippage in exchange for certainty of fill.
By trader level
F&O essentials — options traders
Trading Nifty or Bank Nifty options? Master these concepts to understand premium pricing and risk.
Sources & References
- ↗NSE equity derivatives — NSE (accessed 2025-06-01)
FAQ
What happens if I do not square off MIS in time?
Brokers typically auto square-off MIS positions before market close. You may pay penalties, suffer poor fills, or in edge cases face delivery-related issues on products not meant to carry.
Is square off the same as selling?
For a long position, square off is a sell that closes the buy. For a short, it is a buy to cover. The key is net zero exposure after the trade.
Should I market or limit square off near close?
Liquid index contracts often use market orders with a time buffer before cut-off. Illiquid names benefit from limits earlier in the session — log fill quality either way.
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