Australia-based investment company Keybridge Capital Ltd is considering a share buyback using its $20.5 million cash in an effort to repel a takeover by its rival Oceania Capital.

Singapore sovereign wealth fund GIC has signed a deal to invest in London’s Broadgate development through a joint venture partnership with UK-based real estate developer British Land.

Australia-based protective clothing manufacturer Ansell Ltd has completed the purchase of US-based firm BarrierSafe Solutions International in a deal valued at $615 million (A$692.29 million).

California, US-based security company FireEye purchased Virginia-based firm Mandiant for $1 billion in the biggest security deal of 2013.

Square 1 Bank completed the acquisition of Silicon Valley-based Sand Hill Finance, a financing solutions provider for emerging growth firms. Financial terms about the transaction were not disclosed.

Competition Commission of India (CCI), the fair trade regulator, said in a published order that it has given its approval for the planned merger of steel companies Shree Uttam Steel and Power and Uttam Galva Steels.

Despite the relatively low price Fiat managed to score in its buyout of Chrysler Group LLC, analysts said the ballooning debt of Fiat should be something to worry about.

Cyprotex, a drug testing company based in the UK, on Thursday announced that it had purchased American rival CeeTox. Cyprotex will initially pay £630,000 to the North American Science Associates for CeeTox.

According to a report by The New York Times, mergers are picking up activity as financial markets worldwide, including the US, are becoming stronger and more stable.

The top dealmaker for Canadian retail mergers and acquisitions for 2013 is the Royal Bank of Canada, data from Bloomberg revealed. RBC has held the top spot for the third straight year.