📊 Current Lot Sizes 2026 (Latest Update)
Nifty 50 & Bank Nifty Lot Sizes (As of January 2026)
Nifty 50
Lot Size:50 units
Contract Value: Nifty Price × 50
Example: If Nifty is at 22,000, contract value = ₹11,00,000
Bank Nifty
Lot Size:15 units
Contract Value: Bank Nifty Price × 15
Example: If Bank Nifty is at 48,000, contract value = ₹7,20,000
⚠️ Important: Lot sizes are set by NSE and can change based on market conditions. Always verify current lot sizes before trading. Last verified: January 2026.
📅 Historical Lot Size Changes
NSE (National Stock Exchange) periodically adjusts lot sizes to maintain contract values within a reasonable range. Here's the history of lot size changes:
Nifty 50 Lot Size History
| Period | Lot Size | Reason |
|---|---|---|
| 2024 - Present | 50 units | Standard lot size maintained |
| 2020-2023 | 50 units | Stable period |
| 2019 | 75 units | Reduced from 75 to 50 |
| 2014-2018 | 75 units | Previous standard |
Bank Nifty Lot Size History
| Period | Lot Size | Reason |
|---|---|---|
| 2024 - Present | 15 units | Current standard |
| 2020-2023 | 15 units | Stable period |
| 2019 | 20 units | Reduced from 20 to 15 |
| 2014-2018 | 20 units | Previous standard |
💰 How to Calculate Position Size with Lot Sizes
Understanding lot size is crucial for calculating your position size, margin requirements, and potential profit/loss. Here's how to do it:
Formula for Contract Value
Contract Value = Index Price × Lot Size
Example 1: Nifty 50 Call Option
Current Nifty Price: ₹22,000
Lot Size: 50 units
Premium per lot: ₹150
Contract Value = ₹22,000 × 50 = ₹11,00,000
Total Premium Paid = ₹150 × 50 = ₹7,500
Example 2: Bank Nifty Put Option
Current Bank Nifty Price: ₹48,000
Lot Size: 15 units
Premium per lot: ₹200
Contract Value = ₹48,000 × 15 = ₹7,20,000
Total Premium Paid = ₹200 × 15 = ₹3,000
Profit/Loss Calculation with Lot Size
Profit Calculation Example
You buy Nifty 22,000 Call at ₹150 premium
Nifty expires at ₹22,500
Lot Size: 50 units
Intrinsic Value = ₹22,500 - ₹22,000 = ₹500 per unit
Total Intrinsic Value = ₹500 × 50 = ₹25,000
Premium Paid = ₹150 × 50 = ₹7,500
Net Profit = ₹25,000 - ₹7,500 = ₹17,500
Profit % = (₹17,500 / ₹7,500) × 100 = 233%
⚡ Impact of Lot Size on Trading Strategies
Lot size directly affects your capital requirements, risk exposure, and profit potential. Here's how it impacts different trading strategies:
📈 Capital Requirements
- • Nifty: ₹11,00,000+ contract value (at 22,000)
- • Bank Nifty: ₹7,20,000+ contract value (at 48,000)
- • Higher lot size = Higher capital needed
- • Affects position sizing and risk management
💰 Profit/Loss Impact
- • ₹1 move in Nifty = ₹50 profit/loss (lot size 50)
- • ₹1 move in Bank Nifty = ₹15 profit/loss (lot size 15)
- • Larger lot size = Higher profit potential
- • Also means higher risk exposure
Strategy-Specific Impact
1. Intraday Trading
Lot size affects how many lots you can trade with your capital. Smaller lot sizes (like Bank Nifty's 15) allow more flexibility for position sizing.
2. Swing Trading
Larger lot sizes mean higher capital commitment. Nifty's 50-unit lot size requires more capital but offers better liquidity.
3. Options Strategies (Iron Condor, Straddle)
Lot size determines how many contracts you need for multi-leg strategies. Must calculate total margin across all legs.
🔍 Why Do Lot Sizes Change?
NSE adjusts lot sizes to maintain contract values within a reasonable range. Here are the main reasons:
1. Market Capitalization Changes
As indices grow, contract values increase. NSE reduces lot sizes to keep contracts affordable for retail traders.
2. Retail Participation
Smaller lot sizes encourage more retail traders to participate, increasing market liquidity and depth.
3. Risk Management
Appropriate lot sizes help manage risk by keeping contract values reasonable relative to market volatility.
4. SEBI Guidelines
SEBI may recommend lot size adjustments to ensure market stability and protect retail investors.
📊 Other Indices Lot Sizes 2026
| Index | Lot Size | Contract Value (Approx) |
|---|---|---|
| Nifty 50 | 50 units | ₹11,00,000 (at 22,000) |
| Bank Nifty | 15 units | ₹7,20,000 (at 48,000) |
| Nifty IT | 25 units | Varies |
| Nifty Pharma | 50 units | Varies |
| Nifty FMCG | 50 units | Varies |
| Nifty Midcap 50 | 75 units | Varies |
💡 Note: Lot sizes for sectoral indices may vary. Always check with your broker or NSE website for the latest lot sizes before trading.
❓ Frequently Asked Questions About Lot Sizes
What is the current Nifty 50 lot size in 2026?
The current Nifty 50 lot size is 50 units as of January 2026. This means one Nifty options contract represents 50 units of the Nifty 50 index. The contract value is calculated as Nifty Price × 50.
What is the current Bank Nifty lot size in 2026?
The current Bank Nifty lot size is 15 units as of January 2026. Bank Nifty has a smaller lot size compared to Nifty 50, making it more accessible for retail traders with lower capital.
Why did NSE reduce lot sizes in the past?
NSE reduces lot sizes to keep contract values affordable as indices grow. For example, when Nifty was at lower levels, lot sizes were higher (75 units). As Nifty grew, lot size was reduced to 50 to maintain reasonable contract values for retail participation.
How do lot size changes affect my existing positions?
Lot size changes typically apply to new contracts. Existing positions continue with the lot size at which they were opened. However, when rolling over positions, new contracts will use the updated lot size.
Can I trade fractional lots in Nifty or Bank Nifty?
No, you cannot trade fractional lots. You must trade in complete lots only. For Nifty, you trade in multiples of 50 units. For Bank Nifty, you trade in multiples of 15 units.
How does lot size affect my margin requirements?
Lot size directly affects margin requirements. Higher lot size means higher contract value, which requires more margin. For example, Nifty's 50-unit lot size requires more margin than Bank Nifty's 15-unit lot size for the same index level.
Where can I find the latest lot size information?
You can find the latest lot sizes on the NSE website (nseindia.com), your broker's platform, or trading apps. Lot sizes are also displayed in the options chain. Always verify before trading as lot sizes can change.
What happens if lot size changes while I have open positions?
Your existing positions are not affected by lot size changes. They continue with the original lot size. Only new contracts opened after the change will use the new lot size. When you roll over or close existing positions, new positions will use updated lot sizes.
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