US asset manager BlackRock announced it is buying Barclays Global Investors, the investment arm of Barclays, for 13.5 billion dollars (8.18 billion pounds).
The purchase -- which is still subject to approval by Barclays shareholders -- would double BlackRock's size and create a firm managing assets worth some 2.7 trillion dollars, employing over 9,000 people in 24 countries, according to the New York-based investment group.
In the deal, including BGI's market-leading iShares trading platform, BlackRock would acquire BGI for 6.6 billion dollars cash and 37.8 million dollars in shares.
"The shares will represent a 4.9-percent voting interest and an aggregate 19.9-percent economic interest in the combined firm, which will be renamed BlackRock Global Investors," the statement read.
"The combination of BlackRock and BGI would bring together market leaders in active and index strategies to create the preeminent asset management firm," the company said.
The transaction "would create an independent and fully integrated asset management firm with combined assets under management of over 2.7 trillion dollars."
BGI, one of Barclays' most valuable branches with some 1.5 trillion dollars in assets under management, has attracted interest from several buyers since April, but in recent days BlackRock was reportedly the favorite to swoop in for the deal.
If finalized the transaction will provide a valuable influx of cash for Barclays, which has hoped to strengthen its capital without resorting to assistance from the British government -- something the bank has avoided so far during the world economic crisis.
"We are incredibly excited about the potential to significantly expand the scale and scope of our work with investors throughout the world," BlackRock CEO Laurence Fink said in a statement. "The combination of active and passive investment products will be unsurpassed."
He added that the expanded firm "will remain at the forefront of addressing key investment issues and trends that have emerged over the past decade and are now accelerating dramatically."
These include "globalization of capital markets, a greater focus on asset allocation" plus "fiduciary management, risk management and advisory services."
Blake Grossman, the current BGI chief executive, will stay on to serve as a vice chairman of the combined firm, said Fink.
"The two firms mesh well, and I have every confidence we will smoothly integrate into one organization," Grossman said in the statement.
Barclays in April agreed to sell iShares to private equity group CVC Capital Partners for 4.4 billion dollars to help the bank avoid having to join a government insurance scheme for risky assets.
However Barclays has the right to break the deal and sell to a third party up until late June.