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Market Intelligence › Basic Terminologies
If the margin is not met, the risk team will automatically close your position, without your consent.
Published by The Retail Trader · JUL 31, 2026 · Derivatives (F&O)
Square-Off on Shortfall — The risk team automatically closes your position when the margin is not met, without your consent.
This term comes under Derivatives (F&O), in the section “MARGIN AND POSITION LIMITS”. The most expensive F&O is surprise margin because it can increase even after the position is taken:
Other terms in this group — understanding them together is more useful:
• Initial Margin
• Exposure Margin
• MTM Margin
• Additional / Ad-hoc Margin
• Margin Benefit
• Peak Margin Penalty
• Physical Delivery Margin
• MWPL (Market Wide Position Limit)
• F&O Ban Period
• Position Limit
To read the entire group and all its examples in one place, see the journal "DERIVATIVES: DICTIONARY OF FUTURES & OPTIONS" - this term has been taken from there.
This entry is for educational purposes only and is not a recommendation to buy or sell. Exchanges change charges, margins, lot sizes and expiry rules from time to time, so verify any figures with your broker or exchange.