NEW YORK ( TheStreet) -- Berkshire Hathaway ( BRK.A) initiated a stake in Internet-infrastructure specialist Verisign ( VRSN), according to the latest 13F regulatory filings.

Warren Buffett's holding company opened a position in Verisign with 3,685,700 shares. Berkshire also started a stake in food-processing giant Archer Daniels Midland ( ADM), with 5,956,600 shares.

Shares of VeriSign, which provides domain name registry services, closed up 0.2% to $45.67 during Thursday's trading. The company's stock has risen almost 9% during the past three months.

Buffett's fund, which announced a $28 billion deal to acquire H.J. Heinz ( HNZ) on Thursday, also increased its stakes in a host of companies, including DIRECTV ( DTV), General Motors ( GM) and IBM ( IBM), according to the 13Fs.

Berkshire increased its DIRECTV stake by 4,481,900 shares, taking its position to 34,037,500 shares. The company took its GM position to 25 million shares from 15 million.

The Oracle of Omaha made a more modest increase to his IBM holding, adding 597,588 shares, bringing Berkshire's total to 68,115,484.

Buffett, who has traditionally avoided tech stocks, initiated a position in IBM in 2011, revealing that he was won over by IBM's 2010 annual report and the company's history of strong leadership. The billionaire, who subsequently increased his position, also lauded IBM's extensive reach into corporate IT departments, where it sells a vast array of wares.

-- Written by James Rogers in New York

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