I know this is a long read I couldn’t make it any shorter without losing the details. But stick with me; by the end, you’ll walk away with a completely new perspective. Let’s begin.
If you trade index options and futures in India, you are operating under a specific set of risk rules set by SEBI. These rules restrict how much exposure you can hold to prevent excessive risk and maintain market stability.
Historically, position limits were often based on Notional Value or simple Open Interest (OI) counts. If you bought 1 lot of Nifty Futures or 1 lot of deep OTM Call options, they were often treated similarly in terms of “contracts held.” This was inefficient because a deep OTM option carries significantly less risk than a Future.
What Are Delta-Based Limits?
Delta measures how much your options exposure moves with the market. Instead of counting just the number of contracts, the exchange now calculates your “Delta OI” the actual market exposure these contracts represent.
For example, buying an out-of-the-money (OTM) Put with -0.20 Delta only counts as 0.20 units toward your limit, not a full unit. This means OTM options take up much less of your allowed exposure than in-the-money options or futures.
The Three Limits You Need to Know
1. Net Delta Limit: ₹1,500 Crores (EOD) / ₹5,000 Crores (Intraday)
Your total directional exposure, combining Futures, Calls, and Puts, cannot exceed ₹1,500 crores at the end of the day. During trading hours, you can go up to ₹5,000 crores, but you must bring it back down by EOD.
If you breach this at EOD, an Additional Surveillance Deposit (ASD) margin will be blocked in your account for 30 days.
2. Gross Long (Bullish) Limit: ₹10,000 Crores
This is the maximum combined exposure from Long Calls + Short Puts. The condition is that you are only allowed to utilise this ₹10,000 Crore limit if your Net Delta is below ₹1,500 Crores. If your Net Delta breaches ₹1,500 Cr, your Gross Limit becomes irrelevant because you are already in violation.
3. Gross Short (Bearish) Limit: ₹10,000 Crores
This is the maximum combined exposure from Long Puts + Short Calls. Crucial Condition is just like the bullish side, you are only allowed to reach this ₹10,000 Crore limit if your Net Delta remains below ₹1,500 Crores.
If you breach any gross limit, ASD is blocked for 30 days.
Note- Before this circular, the positional level limit was only 500cr at Notional Value
How DeltaOI is Calculated
You don’t calculate delta yourself. The NSE Clearing (NCL) provides delta values daily in their SPAN parameter files:
- Futures: Always +1
- Call Options: 0 to +1 (depends on how deep in or out of the money)
- Put Options: -1 to 0
The exchange uses this formula: OI Quantity × Delta × Previous Day’s Underlying Price
That gives you your “Delta OI” which is then converted to rupee exposure.
Real Example With NIFTY
Let’s take NIFTY previous close = 25,000
| Contract | Long Qty | Short Qty | Delta | FutEq/Delta OI qty | Position (Rs. Crs) | Allowed Limit (Rs. Crs) | Violation |
|---|---|---|---|---|---|---|---|
| NIFTY CE OPTION 25000 JUN | 2,00,000 | 0.50 | 1,00,000 | ||||
| NIFTY CE OPTION 24000 JUN | 6,00,000 | 0.90 | -5,40,000 | ||||
| NIFTY PE OPTION 26500 AUG | 5,00,000 | -0.50 | -2,50,000 | ||||
| NIFTY PE OPTION 27000 AUG | 19,50,000 | -0.70 | 13,65,000 | ||||
| NET Delta | 6,75,000 | 1,688 | 1,500 | Yes | |||
| Gross Long Delta (Long CE + Short PE) | 14,65,000 | 3,663 | 10,000 | No | |||
| Gross Short Delta (Long PE + Short CE) | -7,90,000 | -1,975 | 10,000 | No |
How it’s calculated:
- Net Delta OI = 6,75,000 units
- Net Delta Exposure = 6,75,000 × 25,000 = ₹1,688 Crores
- Gross Long = Long Calls + Short Puts = 14,65,000 × 25,000 = ₹3,663 Crores
- Gross Short = Long Puts + Short Calls = -7,90,000 × 25,000 = -₹1,975 Crores
Result: You breach the ₹1,500 crore Net Delta limit by ₹188 crore and ASD margin gets blocked for 30 days. Gross limits are not breached.
The “Hedged Whale” Problem: Breaching Gross but Safe on Net
This is where the distinction between Gross and Net Delta really starts to matter.
Imagine you’re running a massive arbitrage or market-neutral strategy. Your longs and shorts are perfectly offsetting each other, so your Net Delta sits comfortably close to zero on paper; you have no directional risk. But the exchange isn’t just looking at your net exposure. It’s also watching the sheer size of your separate long and short books, because even a perfectly hedged position carries real liquidity and execution risk if something goes wrong.
Consider this scenario. NIFTY closed at 25,000, and a trader has put on a massive Long Straddle buying both Calls and Puts in equal measure.
| Contract | Qty | Delta | Fut Eq / Delta OI | Position (₹ Cr) | Limit Check |
|---|---|---|---|---|---|
| Long Calls | 4,20,000 | +1.0 | +4,20,000 | ₹10,500 Cr | Breached (>10k) |
| Long Puts | 4,20,000 | -1.0 | -4,20,000 | ₹10,500 Cr | Breached (>10k) |
| NET Delta | 0 | ₹0 Cr | Safe (<1.5k) |
The net picture looks pristine. The bullish exposure of +₹10,500 Cr and the bearish exposure of -₹10,500 Cr cancel each other out perfectly, leaving a Net Delta of zero. By that measure, this trader has no directional bet on the market whatsoever.
But look at the gross side. The long book alone just the calls clocks in at ₹10,500 Cr, which is well past the Gross Limit of ₹10,000 Cr. The exchange flags a breach, even though the net risk is zero.
The logic here is deliberate. Regulators want to allow hedging that’s healthy market behaviour. But they don’t want traders using hedges as a loophole to build unlimited book size. If markets seize up or liquidity dries out, unwinding a ₹10,500 Cr long book and a ₹10,500 Cr short book simultaneously is a very different problem than holding a genuinely small position. The Gross Limit is the circuit breaker that catches this.
What Happens When You Breach?
Real-Time Monitoring: The exchange provides 5 snapshot files throughout the day. You can check your position in real-time using tools like Sensibull.
Once you hit the intraday limit (₹5,000 crores net), the RMS may block fresh orders automatically. You’ll only be allowed to reduce or exit positions.
ASD Calculation:
- EOD Breach: ASD = Excess Position Value - Available Cash/Equivalents (blocked for 30 days)
- Intraday Breach on Expiry Days: ASD = (Snapshot Position Value - Limit) × 1.5
Important: ASD only applies to intraday breaches on expiry days. Regular intraday breaches (non-expiry) don’t trigger ASD, as long as you’re compliant by EOD. If Multiple Limits Are Breached, only the highest excess amount triggers ASD. You don’t get charged multiple times.
Key Points to Remember
Position tracking is dynamic, meaning your exposure is calculated based on current market prices, not the price when you entered the trade. If your OTM options move ITM, their Delta increases, and your exposure grows, this can push you over the limit even if you haven’t added any new positions.
However, to keep things predictable, the exchange doesn’t use real-time volatility for these calculations. Instead, they use Yesterday’s (T-1) closing volatility (specifically, the higher of the Index or Futures volatility). This ensures that sudden intraday volatility spikes don’t unfairly mess up your limit calculations."
Limits are PAN-based. If you have multiple trading accounts, each with a different PAN, they have separate limits. However, if the exchange believes you’re using multiple PANs to bypass limits (“acting in concert”), they’ll aggregate your positions anyway.
Very few people breach these limits. The ceiling is set quite wide. You’d need significant exposure to even approach the gross limits of ₹10,000 crores.
Summary and Final Thoughts
Delta-based limits give you flexibility with OTM options while controlling actual market risk. Understand how your options’ delta changes with the market, and you’ll have no issues. The limits are generous enough for most traders to just monitor regularly and stay compliant at EOD.
Reference
NSE circular: 70553