Qihoo, which raised $39m in two rounds backed by IDG before floating on the New York Stock Exchange in 2011, is looking to go private again.

China-based internet company Qihoo 360 may delist from the New York Stock Exchange as the company’s chairman Hongyi Zhou leads a proposed buyout that values the company at approximately $9bn.

Qihoo, which set up a corporate venturing division in Silicon Valley in July 2014, floated in 2011.

Qihoo closed a $20m series C round in 2010. It previously attracted $25m for a series B round in 2008 and $14m series A round in 2006, both backed by technology and media…