In a filing with the US Securities and Exchange Commission, the company said it received 0.8595 of Bank of America common stock for each Merrill share.

Temasek was Merrill's largest shareholder, holding 219.7 million shares, which it had bought at an average price of $23 to $24 a share.

After the conversion, Temasek holds about 189 million shares of Bank of America.

Bank of America shares closed at $13.71 on Wednesday on the New York Stock Exchange, bringing the stake's value to $2.59 billion.

Temasek now holds a stake of about 3.8 per cent in Bank of America, which had 5.02 billion shares outstanding as of Oct 31.

On Jan 1, Bank of America completed its purchase of Merrill Lynch, creating the largest US bank. -- REUTERS