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Market Intelligence › Basic Terminologies
How many contracts are currently open in F&O?
Published by The Retail Trader · JUL 31, 2026 · Order Flow
Open Interest (OI) — How many contracts are currently open in F&O. Volume shows activity, OI commitment.
This term comes under Order Flow, in the "TOOLS FOR READING FLOW" section. And finally the data that tells us what the big participants are doing:
Other terms in this group — understanding them together is more useful:
• Volume Profile
• POC (Point of Control)
• Value Area
• Long Buildup
• Short Buildup
• Long Unwinding
• Short Covering
• FII / DII Data
• Bulk Deal / Block Deal
• Delivery Percentage
To read the entire group and all its examples in one place, see the journal "ORDER FLOW: FROM ORDER TO EXECUTION" - this term is 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.