A range of companies spanning IT, energy, chemicals, and infrastructure made notable announcements on December 4. The updates include new contracts, collaborations, plant operations, and strategic expansions. Here’s a roundup of the key corporate moves shaping market attention today.
Market recap
The Indian stock market ended slightly higher on December 4. The Sensex gained 158.51 points (0.19%) to close at 85,265.32, while the Nifty 50 rose 47.75 points (0.18%) to finish at 26,033.75.
Stocks to watch today, December 5, 2025
HCLTech
Information technology major HCL Technologies (HCLTech) has entered into a collaboration with Strategy, formerly known as MicroStrategy and recognised as a public enterprise analytics company. The two firms will jointly support the rollout of Strategy Mosaic, which is described as an artificial intelligence-powered universal semantic layer.
Tata Power
Energy company Tata Power issued an update regarding the temporary suspension of operations at its power units located in Mundra, Gujarat. The company said it is working on the necessary measures required for restarting and expects operations to resume by December 31, 2025, subject to completion of safety and operational checks. The shutdown was earlier communicated through stock exchange filings.
RailTel
Public sector enterprise RailTel Corporation of India, which operates under the Ministry of Railways, announced a new order from the Central Public Works Department (CPWD). The company has been asked to design and implement an Information and Communication Technology (ICT) network.
Diamond Power
Electrical equipment company Diamond Power Infrastructure said it has received a significant order valued at Rs 747.64 crore from Adani Green Energy. The order covers the supply of 2,126 kilometres of 33 kilovolt (kV) high-voltage cables and 3,539 kilometres of 3.3 kV medium-voltage solar cables for renewable energy projects in Khavda and Rajasthan. The company noted that the contract value does not include Goods and Services Tax (GST) and that the purchase order has been issued on a per-kilometre rate basis with a price variation clause.
Hindustan Unilever
Hindustan Unilever (HUL) will separate its ice-cream business into a new company, Kwality Wall’s India Ltd (KWIL), and the record date is December 5, 2025. Anyone who holds HUL shares on this date will get one KWIL share for every one HUL share they own. December 4, 2025, was the deadline to buy HUL shares if investors wanted to be eligible for the demerger.
SEAMEC
Marine services company SEAMEC has finalised a new agreement with HAL Offshore for the deployment of its multi-support vessel SEAMEC Agastya, earlier known as NPP Nusantara. The vessel will join HAL Offshore’s project under the Oil and Natural Gas Corporation (ONGC) contract once it completes mandatory dry-dock maintenance. The deployment period is planned for five years.
Deepak Nitrite
Chemical manufacturer Deepak Nitrite announced that its wholly-owned unit Deepak Chem Tech has begun operations at its new nitric acid plant located in Nandesari, in Gujarat’s Vadodara district. The plant became operational on December 4, 2025, after a total investment of roughly Rs 515 crore.
Aditya Birla Sun Life AMC
Mutual fund company Aditya Birla Sun Life Asset Management Company (AMC) has incorporated a new wholly-owned subsidiary named Aditya Birla Sun Life AMC International (International Financial Services Centre – IFSC). The unit was registered in GIFT City, Gandhinagar, with the Ministry of Corporate Affairs issuing the certificate of incorporation on December 4, 2025, at 12:50 PM. The new arm will handle international and IFSC-specific operations.
Lloyds Engineering
Industrial manufacturer Lloyds Engineering Works said it has signed an agreement with Italian firm Virtualabs S.r.l. to jointly develop advanced radar technologies. The collaboration will focus on applications for both defence-related uses and civilian systems such as monitoring and surveillance.