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What is futures rollover and how does it work in NSE/BSE F&O markets?
What is futures rollover in Indian F&O markets: how rolling over works, the cost of roll (roll spread), how rollover percentage is interpreted as a sentiment indicator, and the monthly expiry calendar for NSE.
In one line
Futures rollover is the process of squaring off an expiring futures contract (near month) and initiating a new position in the next month's contract (far month) to maintain continuous directional exposure beyond the current expiry without delivery.
BazaarBaaziSource & method
How rollover works
NSE stock and index futures expire on the exchange-specified day, which has changed over time and must be checked in the current contract specification. An investor who is long a near-month futures contract can close it and buy a later-month contract to maintain similar exposure.
The roll spread is the price difference between the near-month and far-month contracts. In a normal (contango) market, far-month futures trade at a premium to near-month (reflecting the cost of carry: financing cost minus expected dividends). The roll cost for a long holder is the premium paid when moving from a near-month to a far-month contract.
Rollover activity is concentrated in the last few days before expiry. Published ratios compare expiry-level open interest, but aggregate data cannot pair an account's near-month close with a later-month open or identify direction, hedges and spreads.
Reading rollover data as a sentiment indicator
Rollover percentage measures what portion of the open interest in an expiring contract has been carried forward to the next month. Industry convention is to compare current rollover with the 3-month average rollover to assess whether positioning is above or below normal.
A high ratio means later-expiry open interest is large under the stated formula. Price rising or falling does not reveal which accounts own the long or short side, whether positions are hedges, or whether later-expiry inventory came from the same participants. It is not a standalone sentiment label.
FAQ2 reader questions · AEO-eligible
Common questions on what is futures rollover.
What is the difference between rolling over and settling futures?
Settlement applies when the expiring contract reaches its final settlement; index derivatives are cash settled, while eligible single-stock derivatives can result in physical settlement under exchange rules. Rollover is an active two-trade choice to close the expiring position and open a later-expiry one before settlement.
What is cost of carry in futures pricing?
Cost of carry is the theoretical financing cost, less expected income such as dividends, embedded between spot and futures for the time to expiry. A premium or discount can deviate from fair value for several reasons and does not automatically identify bullish or bearish ownership.
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