John Woolard, Alstom-backed Brightsource's chief executive, says: "The continued market and economic volatility are not optimal conditions for an IPO."

Envivio, a video delivery system spin-off which postponed its float last year, sets the range of the initial public offering.

Tibco's acquisition of the US-based data security company provides an exit for Germany-based software company SAP's corporate venturing unit.

The 3G and 4G mobile hardware company previously backed by Motorola reportedly eyes a $100m to $150m sale.

Dow Chemical buys the company previously backed by its corporate venturing unit.

The venture capital firm backed by Ofer Holding Group sells its stake in the Israel-based internet tools company, giving it a valuation of $1.3bn.

Biopharmaceutical company Merrimack, backed by Fidelity, raises $100m on Nasdaq.

Computer networks company Genband, backed by multiple corporates including Siemens, Intel and Texas Instruments, buys its Verizon-backed network migration rival.

The India-based advertising network backed by the corporate venturing unit of local media company Network 18 sells to Bertelsmann's publishing division

Motorola and Cisco Systems-backed Vocera saw big gains after its flotation last week.