F&O market today: Top gainers and losers, OI spikes, most active contracts
News by Aliceblue News Desk
21 Apr 2025

What is F&O?
Futures and Options (F&O) are derivative contracts traded on the stock market.
Futures contracts involve an agreement to buy or sell an asset at a fixed price at a future date, while Options give the right, but not the obligation, to buy or sell an asset at a predetermined price before or on the expiration date.

Stock Market Today
Stock Market Today: Nifty closed at 24,125.55, up by 1.15%, while Sensex ended at 79,408.50, gaining 1.09%, driven by strong performance in Nifty MidSmall Financial Services, IT & Telecom, and Oil & Gas sectors. However, the FMCG sector saw a decline.
Nifty: 24,125.55 [+273.90] +1.15%
Sensex: 79,408.50 [+855.30] +1.09%
Contracts with high open interest:
Open interest refers to the total number of outstanding futures or options contracts that have not been settled. High open interest indicates strong market participation and liquidity. It reflects the level of trader interest in a particular contract.
- Tata Elxsi Ltd: 46.88%
- Nifty 50 Index: 42.16%
- Dalmia Bharat Ltd: 35.67%
- JSW Energy Ltd: 35.01%
- Piramal Enterprises Ltd: 34.28%
Top gainers in F&O today:
Top gainers in F&O are the futures or options contracts with the highest percentage increase in value during the trading session. These contracts indicate strong positive momentum and increased demand.
- Vodafone Idea Ltd: 11.32%
- Tata Elxsi Ltd: 11.04%
- Angel One Ltd: 6.85%
- HDFC Asset Management Company Ltd: 6.75%
- BSE Ltd: 6.46%
Top losers in F&O today:
Top losers in F&O are the futures or options contracts that have recorded the highest percentage decrease in value during the trading session. These contracts reflect negative sentiment and selling pressure in the market.
- Marico Ltd: -2.82%
- Godrej Consumer Products Ltd: -1.94%
- Varun Beverages Ltd: -1.76%
- HDFC Life Insurance Company Ltd: -1.44%
- Adani Ports and Special Economic Zone Ltd: -1.41%
Most active contracts: (Value in Rs Lakh)
Most active contracts (value) are the futures or options contracts with the highest total trading value during the session. High trading value indicates strong market interest and higher liquidity in these contracts.
- Nifty 50 Index: ₹1,562,849.07 lakh
- Nifty Bank Index: ₹884,390.53 lakh
- HDFC Bank Ltd: ₹550,443.52 lakh
- ICICI Bank Ltd: ₹366,985.23 lakh
- Infosys Ltd: ₹256,903.00 lakh
Long Build up
Highest open interest (OI) change % refers to the futures or options contracts with the highest percentage increase in open interest. A rise in OI often signals increased trading activity and growing market interest in the contract.
| Company Name | Last Price | Change Percentage | Increase Percentage |
| Vodafone Idea Limited | 8.19 | 11.13% | 143.03% |
| IDFC First Bank Limited | 66.96 | 5.75% | 88.40% |
| YES Bank Limited | 18.97 | 4.35% | 90.67% |
| Eternal Bio Vibe Limited | 231.66 | 0.05% | 163.90% |
| Zomato Limited | 214.47 | 2.03% | 163.90% |
Short Build up
Lowest open interest (OI) change % refers to the futures or options contracts with the lowest percentage change in open interest. Low OI change suggests reduced market participation or a lack of interest in the contract.
| Company Name | Last Price | Change Percentage | Increase Percentage |
| Bharat Heavy Electricals Limited | 228.62 | -0.18% | 271.62% |
| Jio Financial Services Limited | 247.09 | -0.17% | 86.03% |
| NTPC Limited | 366.35 | -0.05% | 135.28% |
| ITC Limited | 425.55 | -0.77% | 235.03% |
| HDFC Life Insurance Company Limited | 714.9 | -1.42% | 489.42% |
Disclaimer: The above article is written for educational purposes, and the companies’ data mentioned in the article may change with respect to time. The securities quoted are exemplary and are not recommendatory.

News Author
Aliceblue News Desk















