Billionbrains Garage Ventures Ltd (GROWW), a large-cap player in the capital markets sector, recorded one of the highest value turnovers on 18 Sep 2026, with a total traded value exceeding ₹14,161 crores. Despite a modest day gain of 0.35%, the stock’s trading activity and institutional interest reveal a nuanced picture of investor sentiment and technical positioning.

Billionbrains Garage Ventures Ltd (GROWW), a large-cap player in the Capital Markets sector, witnessed one of the highest trading volumes on 18 Sep 2026, with over 75 lakh shares exchanging hands. Despite a modest price gain of 0.35%, the stock’s trading activity signals a complex interplay of accumulation and distribution, reflecting cautious investor sentiment amid mixed technical indicators.

Rs 320 put options on Eternal Ltd attracted 2,694 contracts on 18 Sep 2026, signalling notable activity just below the current stock price of Rs 327.80. This surge in put trading comes as the stock continues its three-day rally, raising questions about whether this reflects protective hedging or a more bearish stance.

On 18 Sep 2026, Eternal Ltd witnessed a surge in call option activity with 4,930 contracts traded at the Rs 330 strike price, closely aligned with the stock’s closing price of Rs 327.75. This coincided with a 3.97% gain over three consecutive sessions, signalling a strong directional conviction in both the derivatives and cash markets.

Eternal Ltd, a large-cap player in the E-Retail and E-Commerce sector, has emerged as one of the most actively traded stocks by value on 18 Sep 2026, reflecting strong investor interest and sustained positive momentum. The stock has outperformed its sector and demonstrated consistent gains over the past three sessions, signalling renewed confidence among institutional and retail participants alike.

Rs 4,600 put options on Hindustan Aeronautics Ltd (HAL) attracted 2,826 contracts on 18 Sep 2026, signalling notable activity at a strike price 4.4% below the current market price of Rs 4,813.90. This surge in put trading invites a closer look at whether the options market is signalling caution, protection, or a more nuanced positioning.

On 18 Sep 2026, 10,978 call contracts at the Rs 320 strike price on Tata Motors Passenger Vehicles Ltd changed hands, while the stock closed at Rs 306.4. This surge in call activity, concentrated near an out-of-the-money strike, highlights a speculative directional bet ahead of the 29 Sep expiry, with the options and cash markets painting a nuanced picture of positioning.

Rs 300 put options on Tata Motors Passenger Vehicles Ltd (TMPV) attracted 5,788 contracts on 18 Sep 2026, with the stock trading marginally above at Rs 306.55. This surge in put activity, concentrated just below the current price and ahead of the 29 September expiry, raises the question: is this a bearish bet, a hedge, or put writing? The full data set offers clues to the most plausible interpretation.

Rs 185 put options on Tata Steel Ltd attracted 3,058 contracts on 18 Sep 2026, signalling notable activity just below the current stock price of Rs 187.10. This strike sits slightly out-of-the-money, raising questions about whether this reflects hedging, bearish positioning, or put writing in a stock that has shown modest gains recently.

HDFC Bank Ltd., a stalwart in the private sector banking space, recorded one of the highest value turnovers on 18 Sep 2026, with a total traded value exceeding ₹16,397 crores. Despite a narrow intraday price range, the stock demonstrated resilience, closing higher by 1.15% and outperforming both its sector and the broader Sensex indices.

More than 17,000 put contracts traded across strikes Rs 690 to Rs 720 on HDFC Bank Ltd. as the stock hovered near Rs 718.5 on 18 Sep 2026. The activity, concentrated just below and around the current price, raises questions about whether this signals bearish positioning, protective hedging, or put writing ahead of the 29 September expiry.

12,388 call contracts at the Rs 720 strike price on HDFC Bank Ltd. changed hands on 18 Sep 2026, with the stock closing at Rs 718.50. This near at-the-money activity coincides with a 0.85% gain in the cash market, signalling a synchronised directional stance between the options and underlying shares.

Tata Consultancy Services Ltd. (TCS), a stalwart in the Computers - Software & Consulting sector, witnessed significant trading activity on 18 Sep 2026, with a total traded value nearing ₹297 crore. Despite this high-value turnover, the stock underperformed its sector and broader market indices, reflecting cautious investor sentiment amid a challenging market environment.

The Rs 2,200 put strike on Tata Consultancy Services Ltd. (TCS) attracted 2,890 contracts on 18 Sep 2026, despite the stock trading lower at Rs 2,129.60. This out-of-the-money put activity raises questions about whether traders are hedging existing positions or signalling bearish conviction.

On 18 Sep 2026, 5,115 call contracts at the Rs 2,160 strike price changed hands in Tata Consultancy Services Ltd., with the stock closing at Rs 2,129.10. This strike sits just above the current market price, signalling a near-the-money wager that reflects a nuanced directional view in the options market.

Vodafone Idea Ltd. (IDEA), a large-cap telecom services company, witnessed one of the highest trading volumes on 18 Sep 2026, with over 5.5 crore shares exchanging hands. Despite a modest price gain of 0.14%, the stock’s volume surge and technical indicators reveal a complex picture of investor sentiment and market positioning.

Infosys Ltd (INFY), a stalwart in the Computers - Software & Consulting sector, witnessed significant trading activity on 18 Sep 2026, with a total traded volume exceeding 13.5 lakh shares and a turnover surpassing ₹141.7 crores. Despite this high value turnover, the stock faced a modest decline of 1.02% during the day, reflecting a complex interplay of investor sentiment and market dynamics.

On 18 Sep 2026, Infosys Ltd witnessed significant call option activity with 6,495 contracts traded at the Rs 1080 strike price, while the stock closed at Rs 1042.60. This surge in call buying, concentrated just 11 trading days before the 29 Sep expiry, highlights a speculative positioning in the options market that aligns intriguingly with the stock’s recent price action.

The Rs 1,060 put strike on Infosys Ltd attracted 2,938 contracts on 18 Sep 2026, while the stock traded at Rs 1,042 — slightly below this strike. This activity raises the question: is this a bearish bet, protective hedging, or put writing? The full data set offers clues to the options market’s intent.