4 Biggest mergers and demergers of top Indian companies in 2025

Synopsis: From TATA to Adani, India in calendar year 2025 saw a number of mergers and demergers, this list includes some companies which have witnessed a net profit growth upto 2065 percent. 

There are several types of corporate restructuring out of this two major strategic restructuring includes Mergers and Demergers . In corporate mergers, two or more companies combine into one, in order to boost synergy and expand. On the other hand, demergers are when a company splits into different units for focused growth, and reorganising operations as well as finances to boost efficiency. These processes come under India’s Companies Act 2013. 

In the calendar year of 2025 India saw a number of mergers and acquisitions, these includes several major ones as well from TATA to Adani India has witnessed following companies underwent similar restructurings in

Ambuja Cement

On December 22, 2025, Ambuja Cements’ board approved the merger of ACC and Orient Cement into Ambuja Cements, consolidating the Adani Group’s cement operations into a single listed entity. The merger aims to unlock operational synergies through optimisation of manufacturing and logistics networks, rationalisation of branding and sales spends, and improved capital allocation, with targeted cost savings of at least Rs 100 per tonne. Subject to regulatory approvals, the transaction is expected to be completed within one year. ACC shareholders will receive 328 Ambuja shares per 100 ACC shares, and Orient Cement shareholders will get 33 Ambuja shares per 100 Orient shares.

In the latest quarter, Ambuja Cement saw a strong YoY revenue growth of  21 percent, going from approximately Rs 7,552 Cr in Q2FY25 to Rs 9,174 Cr in Q2FY26, while the QoQ revenue fell by 10 percent from Rs 10,289 Cr in Q1FY26 . The YoY net profits growth was robust at  364 percent, increasing from  Rs 496 Cr in Q2FY25 to Rs 2,302 Cr in Q2FY26, while QoQ net profit surged  126 percent from  Rs 1,017  Cr in Q1FY26.

Tata Motors

Tata Motors completed a major demerger effective October 1, 2025, splitting its businesses into separate entities: a commercial vehicles company and a passenger vehicle (including EVs and Jaguar Land Rover) company. Post‑demerger, each unit operates independently with focused strategies and capital structures designed to unlock shareholder value and enhance operational agility. 

The demerger was decided to be split in a 1:1 ration, that is for every share held by you of TATA Motors, you now earn a new share of the demerged company for free.

In the latest quarter, the company saw a YoY revenue fall of  13 percent, dropping from  Rs 83,656 Cr in Q2FY25 to  Rs 72,349  Cr in Q2FY26, while QoQ fell by 17 percent from  Rs 87,677 Cr in Q1FY26. The YoY net profit grew  by 2065 percent from Rs 3,521 Cr profit in Q2FY25 to a Rs 76,248 Cr in Q2FY26, and on the QoQ grew by 1804 percent from Rs 4,003 Cr in Q1FY26. These kinds of significant numbers have come due to exceptional gains of Rs. 82,318 Crores  received after the demerger due to Transfer of assets and liabilities or else the company would have reported a loss of over Rs. 6,000 Crores.

ITC Limited

ITC executed the demerger of its hotel business on January 1, 2025, with shareholders receiving one share of ITC Hotels for every ten ITC shares held. The split aims to create greater strategic focus and unlock synergies within the business by enabling both entities to pursue independent growth strategies. Following the demerger, ITC retains a 40 percent ownership stake in ITC Hotels, while the remaining 60 percent is directly held by existing ITC shareholders. ITC Ltd demerged its hotel business into ITC Hotels on January 1, 2025, giving shareholders 1 ITC Hotels share for every 10 ITC shares held.

In the latest quarter, the company achieved YoY revenue growth of  8 percent, increasing from Rs 778 Cr in Q2FY25 to  Rs 839 Cr in Q2FY26, with QoQ revenue rose by 3 percent from Rs 816 Cr in Q1FY26. The YoY net profit growth was about 72 percent, going from  Rs 77 Cr in Q2FY25 to  Rs 133 Cr in Q2FY26, while QoQ net profit declined by 0.7 percent from Rs 134 Cr in Q1FY26. 

Siemens Limited

Siemens completed the demerger of its energy business into Siemens Energy India on March 25, 2025, with shareholders receiving one share of the standalone company for each Siemens share held. The new entity debuted on the stock exchanges in June of 2025, reflecting strong demand for a focused power transmission and distribution business post‑demerger. Shareholders of Siemens Ltd will receive 1 fully paid-up Siemens Energy India share for every Siemens Ltd share held.

On a quarterly revenue basis, the company had generated a revenue of RS 2646 Crore in September 2025, which is 47 percent higher than June 2025’s revenue of Rs 1785 Crore. And the net profits for the same time period grew from Rs 263 Crore in June 2025 to Rs 360 in September 2025, showing a 36 percent QoQ growth.

Apart from that, Siemens Energy saw YoY revenue growth of around 20 percent, rising from Rs 1,484 Cr in June 2024 to  Rs 1,785 Cr in June 2025. For the same period the net profit increased by 80 percent YoY, from Rs 146 Cr in June 2024 to Rs 263  Cr in June 2025.

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