Vedanta Resources Chairman & Promoter Anil Agarwal has increased his stake in the mining giant by nearly 4 per cent in past four months, the company revealed in recent filings to the London Stock Exchange (LSE).

According to the filings, Mr. Agarwal has purchased nearly 10.77 million shares or 3.94 per cent stake in the company between 13th of December 2013 and 21st of March 2014.

Mr. Agarwal acquired the stake in around 28 transactions, taking his total stake in the diversified metals & mining firm to 69.51 per cent. Since March 31 last year, he increased his stake in the company by 4.53 per cent.

The steady build up of the promoter's stake in Vedanta has prompted many analysts to predict that the promoter could be thinking about delisting it from exchanges. However, the company has so far uttered not a single word about any such plan.

Mr. Agarwal controls Vedanta Resources through his wholly-owned Volcan Investments Limited, which has been incorporated in the Bahamas.

Meanwhile, Indian Income Tax (I-T) authorities have surveyed Vedanta's main operating firm Sesa Sterlite with regard to its creation that took place in 2013 following merger of Sterlite Industries and other entities of Vedanta into Sesa Goa.

The combination of lower commodity prices and regulatory issues has hurt Vedanta very hard. The company suffered a decline of 9 per cent in its core profits at $3.348 billion during April-December, period of 2013. The company's stock has lost nearly one third of its market value in the past twelve months.