Net Option Value
Also written NOV
Market value of a clearing member's long option positions minus its short option positions, added to (or subtracted from) its Liquid Net Worth so option gains and losses hit capital without cash settlement.
In plain language
Futures profits and losses are settled in cash every day. Options are different: mark-to-market gains and losses on option positions are not settled in cash. Yet a clearing member sitting on short options that have moved sharply against it is clearly less safe than it was yesterday.
Net Option Value (NOV) is how that loss or gain is still recognised. The clearing corporation values all the member's long options and all its short options at market, takes the difference, and adjusts the member's Liquid Net Worth by that amount.
Long options are assets, so their value is added. Short options are liabilities, so their value is deducted. A member heavily short options can find its liquid net worth shrinking even though no cash has left its account.
How it works
The workbook (Chapter 4, section 4.1.2.1) defines it this way:
- NOV is the difference between long option positions and short option positions, valued at the last available closing price of the option contract.
- It is updated intraday at the current market value of the relevant option contracts at the time risk parameters are generated.
- NOV is added to the Liquid Net Worth of the clearing member: the current market value of short options is deducted, and the market value of long options is added.
- Mark-to-market gains and losses on options thus get adjusted against available Liquid Net Worth, and are not settled in cash.
Liquid Net Worth (section 4.1.2.2) is total liquid assets deposited with the exchange/clearing corporation towards initial margin and capital adequacy, less initial margin and extreme loss/exposure margin on gross open positions. A clearing member's Liquid Net Worth must not be less than Rs 50 lakh at any point of time.
Separately, SEBI requires option premium to be collected upfront from option buyers by the TM/CM, and the upfront margin requirement includes net options premium payable at client level - applicable in the equity derivatives segment from February 01, 2025.
The formula
NOV = Market value of long option positions - Market value of short option positions
Liquid Net Worth (adjusted) = Liquid assets - Initial margin - Extreme loss margin + NOV
Requirement: Liquid Net Worth of a clearing member >= Rs 50 lakh at all times
A worked example
Illustrative figures; the Rs 50 lakh floor is the workbook's.
A clearing member has liquid assets of Rs 5.00 crore. Initial margin plus extreme loss margin on its open positions total Rs 3.20 crore, leaving Rs 1.80 crore before options are considered.
Morning. Long options are worth Rs 40 lakh; short options are worth Rs 1.10 crore.
NOV = Rs 0.40 crore - Rs 1.10 crore = -Rs 0.70 crore Liquid Net Worth = Rs 1.80 crore - Rs 0.70 crore = Rs 1.10 crore - above Rs 50 lakh.
Afternoon. The market moves sharply; the short options are now worth Rs 1.90 crore and the long options are unchanged.
NOV = Rs 0.40 crore - Rs 1.90 crore = -Rs 1.50 crore Liquid Net Worth = Rs 1.80 crore - Rs 1.50 crore = Rs 30 lakh - below the Rs 50 lakh minimum.
No cash has changed hands for the options, but the member's capital cushion has shrunk by Rs 80 lakh through NOV alone, and it must bring in more liquid assets or cut positions.
Why NISM asks about it
Chapter 4 (Risk Management, section 4.1.2 - Risk Management Framework for Derivatives) introduces NOV straight after margin on consolidated crystallised obligation, and section 4.1.2.2 defines the Liquid Net Worth it feeds into, with the Rs 50 lakh minimum. It sits beside SPAN, extreme loss margin, calendar spread charge and delivery margins, so questions often test which element is settled in cash (futures MTM) and which only adjusts net worth (option MTM, via NOV).
Common exam traps
- Long option value is added, short option value is deducted. Reversing the signs is the classic error.
- Option MTM is not settled in cash. Futures MTM is. NOV exists precisely because options are not cash-settled daily.
- NOV adjusts Liquid Net Worth, not margin. It is not a separate margin to be paid.
- Valued at last available closing price, and updated intraday at current market value.
- Liquid Net Worth minimum is Rs 50 lakh for a clearing member at any point of time.
- Upfront premium collection from option buyers (from February 01, 2025) is a separate requirement; do not confuse it with NOV.
Where this is taught
- Series IV · Chapter 7: Clearing, Settlement and Risk Management of IRDintroduced here
- Series I · Chapter 7: Clearing, Settlement and Risk Management in ETCDintroduced here
- Series VIII · Chapter 7: Clearing, Settlement and Risk Managementintroduced here
- Series VII · Chapter 4: Risk Managementintroduced here
Related terms
- Calendar spread chargeThe reduced margin on offsetting positions in the same underlying across different expiries: 1.75% of the far-month contract for index derivatives, 2.2% for single stock derivatives.
- Extreme Loss MarginA flat 3.5 per cent margin collected on cash-market positions to cover losses falling outside what the VaR margin is designed to capture.
- Liquid assetsThe collateral a clearing member deposits with the clearing corporation, valued daily after haircuts, which must cover MTM losses, VaR margin, extreme loss margin and base minimum capital.
- Liquid Net WorthThe part of a merchant banker's net worth deployed in unencumbered liquid assets, counted after a prescribed haircut on each asset type — a second capital test that net worth alone cannot satisfy.
- SPANThe scenario-based system clearing corporations use to compute initial margin — it revalues a client's whole derivatives portfolio under sixteen what-if scenarios and charges the worst loss.
- Initial marginThe deposit both the buyer and the seller of a futures contract must place before the position is accepted, sized to cover a 99% worst-case one-day loss on that position.