The transaction value has not been disclosed, but the stake sold is valued at Rs 185 crore (Rs 1.85 billion) at on Thursday's close of Rs 153.65.
After the transaction, the stake held by Holderind Investments, a subsidiary of Holcim, will go up to 40.53 per cent.
Ambuja Cement India Limited, the local company of Holcim, owns 9.83 per cent in the company.
Holcim now collectively owns 50.35 per cent stake in the company.
The other major investors in the company are Life Insurance Corporation (9.23 per cent), Genesis Indian Investment Company (4.44 per cent) and Aberdeen Asset Managers (3.07 per cent).
Radha Madhav Investments Ltd and RKBK Fiscal Services Pvt Ltd, entities controlled by Sekhsaria and Neota, collectively owned 0.79 per cent stake in Ambuja Cements as of September 30,
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