Top gainers and losers, October 18: TechM rallies 8%, TCS jumps 5%, IndiGo falls 3%; check list

During Friday’s session, the foreign institutional investors (FIIs) purchased shares worth ₹1,165.92 crore, while the domestic institutional investors (DIIs) sold equities worth ₹3,661.28 crore on a net basis, according to exchange data.

The SENSEX gained as much as 0.62% to hit an intraday high of 74,778.78, while the NIFTY50 surged as much as 0.7% to touch the session’s peak of 23,149.85.

On October 16, the SENSEX advanced by 413.66 points or 0.56% to close at 74,729.27. Meanwhile, the NIFTY50 ended higher by 148.80 points or 0.65% at 23,146.15.

NIFTY50 top gainers and losers

The NIFTY50 index was supported by buying in the shares of Tech Mahindra, which closed 8.48% higher, a day after it reported a consolidated net profit of ₹1,586 crore for the quarter ended September 30, 2026 (Q2 FY27), marking an 8.2% sequential increase from ₹1,465 crore in Q1 FY27. On a year-on-year (YoY) basis, it registered a growth of 33%.

The company’s revenue from operations surged 3% on a quarter-on-quarter (QoQ) basis to ₹16,180 crore during the quarter under review, compared to ₹15,712 crore in the June quarter of the 2025-26 fiscal year (Q1 FY27).

The other top gainers included Tata Consultancy Services (TCS) (4.89%), Infosys (4.61%), Bharti Airtel (2.75%) and HCL Technologies (2.37%).

On the contrary, the top losers included InterGlobe Aviation (-1.91%), BSE Ltd (-1.90%), Max Healthcare Institute (-1.40%), Tata Consumer Products (-1.27%) and Jio Financial Services (-1.26%).

Shares of InterGlobe Aviation, the parent company of IndiGo, declined as it extended the cancellation of flights to Saudi Arabian cities till October 24 amid the evolving situation in the Gulf country.

Furthermore, BSE Ltd shares fell as market regulator SEBI on Thursday revised the framework for the Closing Auction Session (CAS), changing trading timings and the methodology for determining settlement prices of stock and index derivatives contracts.

Under the revised framework, the 10-minute closing auction session will operate from 3:30 pm to 3:40 pm on all trading days, while trading in index and stock derivatives will continue until 3:45 pm, with certain exceptions for expiring index derivatives contracts, SEBI said in its circular.

Further, a key change pertains to the settlement of expiring derivatives contracts, which will now be based on a Volume Weighted Average Price (VWAP) methodology using the last 30 minutes of continuous trading.

NIFTY MIDCAP 100 top gainers and losers

The NSE Midcap gauge ended at 59,129.75, marking a 67.50-point or 0.11% fall.

It was weighed down by Apar Industries (-5.26%), YES Bank (-3.42%), L&T Finance (-3.11%), Mankind Pharma (-3.07%) and Dixon Technologies (-2.57%), which were among the top laggards.

Shares of YES Bank declined as the Supreme Court’s verdict on the lender’s ₹8,415 crore Additional Tier-1 (AT-1) bond write-off has raised fresh concerns over its capital position and future profitability.

The Supreme Court upheld the Bombay High Court’s decision to quash the 2020 write-off, potentially requiring the restoration of the bonds and payment of accrued interest. YES Bank said it was examining the judgment and evaluating its available legal options.

On the flip side, the top winners included the Indian Hotels Company (4.13%), Waaree Energies (2.86%), Suzlon Energy (2.56%), Info Edge (Naukri) (2.42%) and Swiggy (2.31%).

NIFTY Smallcap 100 top gainers and losers

The NIFTY Smallcap index fell by 1.90 points or 0.01% to close flat at 19,129.80.

Its top losers included R R Kabel (-8.98%), Syrma SGS Technology (-4.94%), Angel One (-4.15%), Mtar Technologies (-3.35%) and Gallantt Ispat (-3.05%).

Conversely, HBL Engineering (16.69%), KPIT Technologies (5.51%), HFCL (5%), Tata Elxsi (4.06%), and Welspun Corp (3.42%) were among its top gainers.