SalesForce is paying $276m in cash and $50m in its shares for Radian6. A further $10m in stock and $4m in cash will be issued to founders and will be subject to vesting conditions over two years.

Cephalon, a Nasdaq-listed drugs company, has agreed to buy Gemin X Pharmaceuticals, a biopharmaceutical company for cancer therapeutics, for $225m.

News Corp invested an undisclosed amount for a minority stake in Journalism Online in June last year and Jon Housman, president of digital journalism initiatives for the company, told news provider paidContent the company's investment "appreciated considerably" with the exit to RR Donnelley.

In an article by news provider VCCircle, Harshal Shah, chief executive of Reliance Ventures, said two private equity firms were picking up its stake in clothes maker Dhama Innovations.

McAfee, a US-based anti-virus software subsidiary of chipmaker Intel, has agreed to acquire local peer Sentrigo for an undisclosed amount.

Sequans Communications has reportedly raised more than $60m from a consortium including corporate venturing units from Motorola Solutions (which owns 1.5 million shares, 5.3%) and Alcatel-Lucent (1.1 million shares, 4%).

China-based security company NetQin Mobile plans to raise $100m in its New York flotation, according to its regulatory filing.

Intel Capital, the corporate venturing unit of Intel, owns 11.9% of Cortina Systems and will hold the same number of shares after its portfolio company's initial public offering, according to its regulatory filing.

Investment banks UBS and Citi are leading underwriters of IDG-backed Qihoo's initial public offering.