TZero, Overstock.com's blockchain subsidiary, raised $134 million in an initial coin offering (ICO) that began last December and was designed to comply with SEC requirements. tZero is an alternative trading system for securities issued on a blockchain that launched in 2015.  

It was also announced today that GSR Capital, a Chinese private equity firm, is leading a $270 million investment in tZero. Part of a larger deal, the investment also includes $104 million in Overstock.com stock and $30 million worth of tZero tokens.  

The company plans to use the funds to finalize its blockchain alternative trading system (ATS) and build similar platforms in jurisdictions around the world.