HEG, Graphite India, Triveni Turbine & Jyoti CNC Lead Top Gainers; IEX, GMDC & Cohance Among Top Losers

Even after the cautious performance by the overall market, there was heavy activity in individual stocks.

Top Gainers

HEG and Graphite India Lead Rally on Global Price Tailwinds

Both HEG Ltd and Graphite India Ltd were identified as key gainers in the market, recording a rise in share prices of 12% and 7%, respectively, on the back of high volumes.

HEG is a major player in the manufacture of graphite electrodes used in the steel sector, whereas Graphite India also operates in the same segment, providing inputs to steel manufacturers who use electric arc furnaces.

The sharp jump in stock prices was backed by an international reason, with GrafTech International, a US company and an industry leader, announcing a price increase in the range of $600-$1,200 per metric ton. This represents a hike of 15%-30% from earlier levels.

It is good news for Indian companies from a sentiment perspective, as higher international prices could improve margins in the future.

Triveni Turbine Jumps on Heavy Volume Buying

In the case of Triveni Turbine Ltd., its stock rallied roughly by 10% to 13%, positioning it among the best gainers from the Nifty 500 family of stocks.

Triveni Turbine is an entity that deals in the production of steam turbines, which are used for generating electricity and in industrial processes. In this scenario, there were nine times more transactions than usual, showing institutional participation.

But in any case, no particular trigger on the fundamental side could be identified. It was all about market participation.

Jyoti CNC Rebounds After Recent Correction

Jyoti CNC Automation Ltd rose by about 6% amid strong volumes following a steep drop in the previous week.

Jyoti CNC produces CNC machine tools and also offers innovative engineering services for industrial automation.

The earlier drop was caused by reports that investigations were launched against the firm's subsidiary called Huron Graffenstaden SAS on account of exports and documentation of dual-use equipment. The current rise may be due to a technical recovery in light of the preceding drop.

Top Losers

IEX Slides Amid Market Coupling Issue

Indian Energy Exchange Ltd fell more than 7%, emerging as one of the biggest fallers.

IEX runs the largest electronic marketplace for power trading in India.

The CERC has invited comments from the public and all other relevant parties until May 16, 2026. The draft further says that the market coupling process would be published within six months.

GMDC Sees Sharp Decline

Gujarat Mineral Development Corporation Ltd fell over 5%.

The company is engaged in mining lignite, bauxite, and other minerals.

The decline did not have any specific news trigger and seems to be a result of broader market weakness and commodity-linked volatility, especially amid rising crude prices and global uncertainty.

Cohance Lifesciences Trades Lower

Shares of Cohance Lifesciences Ltd lost more than 5% during today’s trading session.

The firm is involved in the pharmaceutical and life sciences business sector, working in the field of specialty chemicals & APIs.

There were no significant developments related to the scrip. It looks like the share performance has been purely due to market considerations.

Conclusion

A sharp contrast between the two was seen in the session. As benchmark indexes were trading in ranges amid macroeconomic issues such as escalating crude oil prices, stock-specific action was predominant in the trend.

The graphitic stock segment witnessed a rally in shares of companies such as HEG and Graphite India on account of surging prices internationally. At the same time, Triveni Turbine and Jyoti CNC had bullish moves because of volume and revival in demand.

Conversely, the shares of companies such as IEX, GMDC, and Cohance Lifesciences were under selling pressure as a result of market-related factors.

To summarize, there was a strong sense of stock-specificity in the market, wherein international cues and sector-based events played an important role in influencing individual stock performance.